{"id":121192,"date":"2021-12-10T22:05:50","date_gmt":"2021-12-11T06:05:50","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=121192"},"modified":"2022-05-25T19:12:38","modified_gmt":"2022-05-26T02:12:38","slug":"apache-log4j-vulnerability-cve-2021-44228","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/apache-log4j-vulnerability-cve-2021-44228\/","title":{"rendered":"[2022-03-31 10:00 PDT\u66f4\u65b0] \u8105\u5a01\u306b\u95a2\u3059\u308b\u60c5\u5831: Apache Log4j\u306b\u65b0\u305f\u306a\u8106\u5f31\u6027(CVE-2021-44228) \u5b9f\u969b\u306e\u60aa\u7528\u3082\u78ba\u8a8d"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>2021\u5e7412\u67089\u65e5\u3001Apache <a href=\"https:\/\/logging.apache.org\/log4j\/2.x\/\">Log4j 2<\/a>\u306b\u5b58\u5728\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c (RCE) \u306e<a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-44228\">\u8106\u5f31\u6027<\/a>\u304c\u3059\u3067\u306b\u5b9f\u969b\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002\u516c\u958b\u3055\u308c\u305fPoC (proof of concept: \u6982\u5ff5\u5b9f\u8a3c) \u30b3\u30fc\u30c9\u306f\u3001\u305d\u306e\u5f8c\u306e\u8abf\u67fb\u3067\u3001\u9a5a\u304f\u307b\u3069\u7c21\u5358\u306b\u60aa\u7528\u3067\u304d\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002\u7279\u5225\u306b\u7d30\u5de5\u3055\u308c\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u8106\u5f31\u306a\u30b7\u30b9\u30c6\u30e0\u306b\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u6210\u306b\u3088\u3063\u3066\u306f\u3001\u653b\u6483\u8005\u304c\u305d\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u60aa\u610f\u306e\u3042\u308b\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3059\u308b\u3088\u3046\u6307\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u304c\u767a\u898b\u3055\u308c\u305f\u306e\u304c\u6700\u8fd1\u306e\u3053\u3068\u3067\u3042\u308b\u305f\u3081\u3001\u30aa\u30f3\u30d7\u30ec\u30df\u30b9\u304a\u3088\u3073\u30af\u30e9\u30a6\u30c9\u74b0\u5883\u306e\u4e21\u65b9\u306b\u304a\u3044\u3066\u3001\u307e\u3060\u30d1\u30c3\u30c1\u304c\u9069\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u30b5\u30fc\u30d0\u30fc\u304c\u591a\u6570\u5b58\u5728\u3057\u307e\u3059\u3002\u591a\u304f\u306e\u6df1\u523b\u5ea6\u306e\u9ad8\u3044RCE\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3068\u540c\u69d8\u306b\u3001\u3053\u308c\u307e\u3067\u306e\u3068\u3053\u308d\u3001\u30d1\u30c3\u30c1\u304c\u9069\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u30b7\u30b9\u30c6\u30e0\u3092\u63a2\u3057\u51fa\u3057\u3066\u60aa\u7528\u3059\u308b\u76ee\u7684\u3067\u3001CVE-2021-44228\u306b\u5bfe\u3059\u308b\u5927\u898f\u6a21\u306a\u30b9\u30ad\u30e3\u30f3\u6d3b\u52d5\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u59cb\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001Apache Log4j 2\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3 (2.17.1) \u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3053\u3068\u3092\u5f37\u304f\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<span style=\"font-weight: 400;\">\u3053\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u300112\u670814\u65e5\u306b\u898b\u3064\u304b\u3063\u305f\u8ffd\u52a0\u306e\u8106\u5f31\u6027CVE-2021-45046\u300112\u670817\u65e5\u306b\u898b\u3064\u304b\u3063\u305fCVE-2021-45105\u300112\u670828\u65e5\u306b\u898b\u3064\u304b\u3063\u305fCVE-2021-44832\u3082\u4fee\u6b63\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">12\u670822\u65e5\u306b\u672c\u7a3f\u3092\u66f4\u65b0\u3057\u3001\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9NGFW\u306e\u8105\u5a01\u9632\u5fa1\u30b7\u30b0\u30cd\u30c1\u30e3\u300cApache Log4j Remote Code Execution Vulnerability\u300d\u306e\u30d2\u30c3\u30c8\u6570\u5206\u6790\u304b\u3089\u5224\u660e\u3057\u305fLog4j\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306e\u7d71\u8a08\u3092\u63b2\u8f09\u3057\u307e\u3057\u305f\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u6210\u529f\u3057\u305f\u5834\u5408\u306b\u8a66\u884c\u3055\u308c\u3046\u308b\u3001\u5927\u898f\u6a21\u30b9\u30ad\u30e3\u30f3\u3001\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u306e\u767a\u898b\u3001\u60c5\u5831\u7a83\u53d6\u3001CobaltStrike\u306e\u914d\u4fe1\u3001\u6697\u53f7\u901a\u8ca8\u306e\u30de\u30a4\u30cb\u30f3\u30b0\u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u3053\u306e\u307b\u304b\u3001Log4j\u8106\u5f31\u6027\u306b\u95a2\u9023\u3057\u305f\u6700\u8fd1\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u6642\u7cfb\u5217\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">12\u670828\u65e5\u3001\u672c\u7a3f\u3092\u66f4\u65b0\u3057\u3001CVE-2021-44832\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u63b2\u8f09\u3057\u307e\u3057\u305f\u3002CVE-2021-44832\u306f\u3001Log4j 2\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c(RCE)\u306e\u8106\u5f31\u6027\u3067\u3001\u3053\u308c\u306b\u3088\u308a\u653b\u6483\u8005\u304c\u30ed\u30b0\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u6a29\u9650\u3092\u6301\u3061\u3001JDBC Appender\u3092\u4f7f\u3063\u3066\u60aa\u610f\u306e\u3042\u308b\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306eJDBC Appender\u306f\u3001\u305d\u306e\u5f8c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30c7\u30d0\u30a4\u30b9\u4e0a\u3067\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u308bJDNI URI\u3092\u53c2\u7167\u3057\u307e\u3059\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">\u8106\u5f31\u6027\u306e\u540d\u79f0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Log4j \u8106\u5f31\u6027\u3001Log4Shell<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u672c\u7a3f\u3067\u6271\u3046CVE<\/span><\/td>\n<td><span style=\"font-weight: 400;\"><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-44228\">CVE-2021-44228<\/a>, <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-45046\">CVE-2021-45046<\/a>, <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2017-5645\">CVE-2017-5645<\/a>, <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2019-17571\">CVE-2019-17571<\/a>, <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-45105\">CVE-2021-45105,<\/a> <a href=\"https:\/\/cve.mitre.org\/cgi-bin\/cvename.cgi?name=CVE-2021-44832\">CVE-2021-44832<\/a><\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u8106\u5f31\u6027\u306e\u7a2e\u5225<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\uff08RCE)\u3001\u30b5\u30fc\u30d3\u30b9\u62d2\u5426 (DoS)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b>\u76ee\u6b21<\/b><\/h2>\n<p><span style=\"font-weight: 400;\"><a href=\"#affected-version\">\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30d0\u30fc\u30b8\u30e7\u30f3<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#affected-software\">\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#background\">Apache log4j 2\u306e\u80cc\u666f<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#description-of-the-vulnerability\">\u8106\u5f31\u6027 (CVE-2021-44228) \u306e\u8aac\u660e<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#root-cause-analysis\">\u6839\u672c\u539f\u56e0\u5206\u6790<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#exploit\">\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#in-the-wild-attacks\">\u5b9f\u969b\u306b\u884c\u308f\u308c\u3066\u3044\u308b\u653b\u6483<\/a><br \/>\n<\/span><a href=\"#log4j-exploitation-attempts\">Log4j\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306b\u95a2\u3059\u308b\u7d71\u8a08<\/a><br \/>\n<a href=\"#observed-activity\">\u89b3\u6e2c\u3055\u308c\u305f\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3<\/a><br \/>\n<a href=\"#mass-scanning\">\u5927\u898f\u6a21\u30b9\u30ad\u30e3\u30f3<\/a><br \/>\n<a href=\"#vulnerable-server-discovery\">\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u306e\u767a\u898b<\/a><br \/>\n<a href=\"#v8-password-stealer\">V8\u30d1\u30b9\u30ef\u30fc\u30c9\u30b9\u30c6\u30a3\u30fc\u30e9<\/a><br \/>\n<a href=\"#happy-everyday-cobaltstrike\">Happy Everyday!\u3068CobaltStrike<\/a><br \/>\n<a href=\"#coinminer\">XMRig\u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc<\/a><br \/>\n<span style=\"font-weight: 400;\"><a href=\"#patch-and-bypass\">\u30d1\u30c3\u30c1\u3068\u30d0\u30a4\u30d1\u30b9: CVE-2021-45046\u3001CVE-2021-45105\u3001CVE-2021-44832\u306b\u5bfe\u3059\u308b\u4fee\u6b63\u306e\u8ffd\u52a0<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#log4j-timeline\">\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#conclusion\">\u7d50\u8ad6<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#additional-resources\">\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/a><br \/>\n<\/span><span style=\"font-weight: 400;\"><a href=\"#acknowledgements\">\u8b1d\u8f9e<\/a><\/span><\/p>\n<h3 id=\"affected-version\">\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30d0\u30fc\u30b8\u30e7\u30f3<\/h3>\n<p>2.17.0 \u672a\u6e80\u306e Apache Log4j 2.x (2.16.0 \u306f\u5f8c\u8ff0\u306e\u65b0\u305f\u306a\u8106\u5f31\u6027\u3092\u542b\u3080)<\/p>\n<h3 id=\"affected-software\">\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/h3>\n<p>\u76f8\u5f53\u6570\u306eJava\u30d9\u30fc\u30b9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30ed\u30b0\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u3068\u3057\u3066log4j\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u3053\u306eCVE\u306e\u8106\u5f31\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u79c1\u305f\u3061\u306e\u77e5\u308b\u9650\u308a\u3067\u306f\u3001\u5c11\u306a\u304f\u3068\u3082\u4ee5\u4e0b\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>Apache Struts<\/li>\n<li>Apache Solr<\/li>\n<li>Apache Druid<\/li>\n<li>Apache Flink<\/li>\n<li>ElasticSearch<\/li>\n<li>Flume<\/li>\n<li>Apache Dubbo<\/li>\n<li>Logstash<\/li>\n<li>Spring-Boot-starter-log4j2<\/li>\n<\/ul>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/subscriptions\/threat-prevention\">\u8105\u5a01\u9632\u5fa1<\/a>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u3082\u3064<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>(<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">PA-Series<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/prisma\/vm-series\">VM-Series<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/cn-series\">CN-Series<\/a>)\u307e\u305f\u306f<a href=\"https:\/\/www.paloaltonetworks.com\/sase\/access\">Prisma Access<\/a>\u3067\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f<a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\" target=\"_blank\" rel=\"noopener noreferrer\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.paloaltonetworks.com\/cortex\/cortex-xdr&amp;source=gmail&amp;ust=1639503698447000&amp;usg=AOvVaw36O88ec2jQZXiCHwG7vS75\">Cortex XDR<\/a>\u306f\u3001Linux\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u306f\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u4fdd\u8b77\u306b\u3088\u308a\u3001Windows\u3001Mac OS\u3001Linux \u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u306fBTP (Behavioral Threat Protection) \u306b\u3088\u308a\u304a\u5ba2\u69d8\u3092\u4fdd\u8b77\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/docs.paloaltonetworks.com\/prisma\/prisma-cloud\/prisma-cloud-admin-compute\/vulnerability_management\/vuln_management_rules\">Prisma Cloud<\/a>\u306f\u3001Log4j\u306e\u8106\u5f31\u306a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u3082\u3064\u7d99\u7d9a\u7684\u30a4\u30f3\u30c6\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\uff08CI\uff09\u3001\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u3001\u304a\u3088\u3073\u30db\u30b9\u30c8\u30b7\u30b9\u30c6\u30e0\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/security-operations\/automating-speeding-your-response-to-log4j-vulnerability\/?lang=ja\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.paloaltonetworks.com\/blog\/?p%3D148181%26post_type%3Dsec_ops_post%26preview%3D1%26_ppp%3D8927966f09&amp;source=gmail&amp;ust=1639507670633000&amp;usg=AOvVaw0kRdcBDzhnDzKVlRut4_Js\">Cortex XSOAR<\/a>\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5bfe\u5fdc\u3092\u81ea\u52d5\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2 id=\"background\">Apache log4j 2\u306e\u80cc\u666f<\/h2>\n<p>Apache log4j 2\u306f\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eJava\u30d9\u30fc\u30b9\u306e\u30ed\u30ae\u30f3\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3001\u4e16\u754c\u4e2d\u591a\u304f\u306eJava\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30aa\u30ea\u30b8\u30ca\u30eb\u306elog4j 1.X\u30ea\u30ea\u30fc\u30b9\u3068\u6bd4\u3079\u308b\u3068\u3001log4j 2\u306f\u4ee5\u524d\u306e\u30ea\u30ea\u30fc\u30b9\u306b\u304a\u3051\u308b\u554f\u984c\u306b\u5bfe\u51e6\u3057\u3001\u5229\u7528\u8005\u306b\u30d7\u30e9\u30b0\u30a4\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u63d0\u4f9b\u3057\u3066\u304d\u307e\u3057\u305f\u30022015\u5e748\u67085\u65e5\u3001log4j 2\u304c\u4e3b\u6d41\u3068\u306a\u308a\u3001\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u306elog4j\u30e6\u30fc\u30b6\u30fc\u306f\u3059\u3079\u3066log4j 2\u3078\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u304c\u63a8\u5968\u3055\u308c\u307e\u3057\u305f\u3002Apache log4j 2\u306f\u3001Apache Struts\u3001ElasticSearch\u3001Redis\u3001Kafka\u306a\u3069\u3001\u591a\u304f\u306e\u4e00\u822c\u7684\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u7c21\u5358\u3067\u67d4\u8edf\u306a\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u4e00\u65b9\u3067\u3001Apache log4j 2\u306f\u6b74\u53f2\u7684\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u3092\u51e6\u7406\u3057\u3066\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u969b\u306e\u8106\u5f31\u6027\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u4ee5\u524d\u306b\u30822\u3064\u306e\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u306e\u8106\u5f31\u6027 (CVE-2017-5645\u304a\u3088\u3073CVE-2019-17571) \u304c\u767a\u898b\u3055\u308c\u3066\u304a\u308a\u3001\u63d0\u4f9b\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u5fc5\u8981\u306a\u51e6\u7406\u304c\u884c\u308f\u308c\u306a\u304b\u3063\u305f\u305f\u3081\u306b\u30b3\u30fc\u30c9\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3084\u3055\u3089\u306a\u308bRCE\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2017-5645\">CVE-2017-5645<\/a>: Apache log4j 2.x \u306e 2.8.2 \u4ee5\u524d\u3067\u306f\u3001log4j \u30b5\u30fc\u30d0\u30fc\u304c\u4ed6\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089 TCP \u307e\u305f\u306f UDP \u30bd\u30b1\u30c3\u30c8\u30b5\u30fc\u30d0\u30fc\u3092\u4ecb\u3057\u3066\u53d7\u4fe1\u3057\u305f\u4efb\u610f\u306e\u30ed\u30b0\u30a4\u30d9\u30f3\u30c8\u3092\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3057\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u3066\u7d30\u5de5\u3057\u305f\u30d0\u30a4\u30ca\u30ea\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u9001\u4fe1\u3055\u308c\u308b\u3068\u3001\u4efb\u610f\u306e\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2019-17571\">CVE-2019-17571<\/a>: Apache log4j \u306e\u30d0\u30fc\u30b8\u30e7\u30f3 1.2 (1.2.17 \u307e\u3067) \u3067\u306f\u3001SocketServer \u30af\u30e9\u30b9\u306b\u4fe1\u983c\u3055\u308c\u3066\u3044\u306a\u3044\u30c7\u30fc\u30bf\u306e\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u306b\u5bfe\u3059\u308b\u8106\u5f31\u6027\u304c\u3042\u308a\u3001\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u7528\u306e\u30ac\u30b8\u30a7\u30c3\u30c8\u3068\u7d44\u307f\u5408\u308f\u305b\u3089\u308c\u305f\u5834\u5408\u3001\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2 id=\"description-of-the-vulnerability\">\u8106\u5f31\u6027 (CVE-2021-44228) \u306e\u8aac\u660e<\/h2>\n<p>Apache log4j\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u958b\u767a\u8005\u304c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u3092\u8a18\u9332\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u7279\u5b9a\u306e\u72b6\u6cc1\u4e0b\u3067\u306f\u3001\u30ed\u30b0\u306b\u8a18\u9332\u3055\u308c\u308b\u30c7\u30fc\u30bf\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u306b\u7531\u6765\u3059\u308b\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u306b\u7279\u6b8a\u6587\u5b57\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001\u305d\u306e\u5f8clog4j\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5185\u3067\u30ed\u30b0\u306b\u8a18\u9332\u3055\u308c\u308b\u3068\u3001\u6700\u7d42\u7684\u306b\u306fJava\u30e1\u30bd\u30c3\u30c9\u306e<span style=\"font-family: 'courier new', courier, monospace;\">lookup<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001LDAP\u30b5\u30fc\u30d0\u30fc\u5185\u306e\u30e6\u30fc\u30b6\u30fc\u5b9a\u7fa9\u306e\u30ea\u30e2\u30fc\u30c8Java\u30af\u30e9\u30b9\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8106\u5f31\u306alog4j 2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u88ab\u5bb3\u30b5\u30fc\u30d0\u30fc\u3067RCE\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<h3 id=\"root-cause-analysis\">\u6839\u672c\u539f\u56e0\u5206\u6790<\/h3>\n<p>\u8a73\u7d30\u306b\u8abf\u3079\u3066\u307f\u305f\u3068\u3053\u308d\u3001log4j 2.x\u306f<span style=\"font-family: 'courier new', courier, monospace;\">lookups<\/span>\u3068\u547c\u3070\u308c\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u304c\u901a\u5e38\u306a\u3089\u30e6\u30fc\u30b6\u30fc\u306b\u67d4\u8edf\u306blog4j\u8a2d\u5b9a\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002lookups\u306b\u3064\u3044\u3066\u306e\u516c\u5f0f\u306a\u8aac\u660e\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">lookups\u306f\u3001\u4efb\u610f\u306e\u5834\u6240\u3067log4j\u306e\u8a2d\u5b9a\u306b\u5024\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u306f\uff0cStrLookup\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u7279\u6b8a\u306a\u30bf\u30a4\u30d7\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u3059\u3002<\/span><\/p>\n<p>\u3053\u306e\u6a5f\u80fd\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u4e00\u822c\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u3042\u3089\u304b\u3058\u3081\u7528\u610f\u3055\u308c\u305f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u3001\u4efb\u610f\u306e\u5834\u6240\u306b\u4fbf\u5229\u304b\u3064\u67d4\u8edf\u306b\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067log\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u969b\u3001log4j 2.x\u306fformat\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3001\u5404\u30ed\u30b0\u306b\u542b\u307e\u308c\u308b\u7279\u5b9a\u306e\u6587\u5b57<span style=\"font-family: 'courier new', courier, monospace;\">${<\/span>\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u6587\u5b57\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001Java\u30e1\u30bd\u30c3\u30c9\u306e<span style=\"font-family: 'courier new', courier, monospace;\">lookup<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u6587\u5b57<span style=\"font-family: 'courier new', courier, monospace;\">${<\/span>\u306e\u5f8c\u306e\u6587\u5b57\u5217\u3092\u898b\u3064\u3051\u3001\u6587\u5b57<span style=\"font-family: 'courier new', courier, monospace;\">${<\/span>\u306e\u5f8c\u306e\u5f0f\u3092\u898b\u3064\u3051\u3066\u304a\u3044\u305f\u5b9f\u969b\u306e\u5024\u306b\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u56f31\u306b\u793a\u3057\u305f\u5185\u5bb9\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3059\u308b\u305f\u3081\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306elog\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u5834\u5408\u3001<span style=\"font-family: 'courier new', courier, monospace;\">${<\/span>\u3068\u3044\u3046\u6587\u5b57\u306e\u5f8c\u306b\u3042\u308b<span style=\"font-family: 'courier new', courier, monospace;\">java:runtime<\/span>\u3001<span style=\"font-family: 'courier new', courier, monospace;\">java:vm<\/span>\u3001<span style=\"font-family: 'courier new', courier, monospace;\">java:os<\/span>\u3068\u3044\u3046\u6587\u5b57\u5217\u306f<span style=\"font-family: 'courier new', courier, monospace;\">lookup<\/span>\u30e1\u30bd\u30c3\u30c9\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u307f\u306a\u3055\u308c\u3001\u6700\u7d42\u7684\u306b\u306f\u5bfe\u5fdc\u3059\u308b\u5024\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001<span style=\"font-family: 'courier new', courier, monospace;\">Java(TM) SE Runtime Environment (build 1.7.0_67-b01) from Oracle Corporation<\/span>\u3001<span style=\"font-family: 'courier new', courier, monospace;\">Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)<\/span>\u3001<span style=\"font-family: 'courier new', courier, monospace;\">Windows 7 6.1 Service Pack 1, architecture: amd64-64<\/span>\u306a\u3069\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_121171\" aria-describedby=\"caption-attachment-121171\" style=\"width: 1370px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121172 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/12\/Screen-Shot-2021-12-10-at-3.29.00-PM.png\" alt=\"\u3053\u3053\u3067\u793a\u3055\u308c\u305f\u5185\u5bb9\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3059\u308b\u305f\u3081\u306b\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e2d\u3067log\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3068\u3001${\u3068\u3044\u3046\u6587\u5b57\u306e\u5f8c\u306b\u3042\u308bjava:runtime\u3001java:vm\u3001java:os\u3068\u3044\u3046\u6587\u5b57\u5217\u304clookup\u30e1\u30bd\u30c3\u30c9\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u307f\u306a\u3055\u308c\u3001\u6700\u7d42\u7684\u306b\u5bfe\u5fdc\u3059\u308b\u5024\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002\" width=\"1370\" height=\"240\" \/><figcaption id=\"caption-attachment-121171\" class=\"wp-caption-text\">\u56f31. Java lookup \u306e\u4f8b<\/figcaption><\/figure>\n<p>lookups \u306e\u6a5f\u80fd\u304c\u30b5\u30dd\u30fc\u30c8\u3059\u308blookup\u306b\u306f\u3001Jndi Lookup\u3001JVM Input Arguments Lookup (JMX) \u3001Web Lookup\u306a\u3069\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002Jndi Lookup\u3092\u4f7f\u3046\u3068JNDI\u306b\u3088\u3063\u3066\u5909\u6570\u3092\u53d6\u5f97\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Jndi Lookup\u3067\u306f\u3001\u30ea\u30e2\u30fc\u30c8\u304b\u3089lookup\u3092\u884c\u3046\u305f\u3081\u306b\u3001LDAP\u3084RMI\u306a\u3069\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30ed\u30b0\u306b\u56f32\u306e\u3088\u3046\u306a\u6587\u5b57\u5217\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u3001Java\u30e1\u30bd\u30c3\u30c9\u306e<span style=\"font-family: 'courier new', courier, monospace;\">lookup<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u6587\u5b57\u5217<span style=\"font-family: 'courier new', courier, monospace;\"> jndi:logging\/context-name<\/span>\u304c\u691c\u7d22\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121174\" aria-describedby=\"caption-attachment-121174\" style=\"width: 1368px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121175 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/12\/Screen-Shot-2021-12-10-at-3.33.30-PM.png\" alt=\"CVE-2021-44228\u3092\u8aac\u660e\u3059\u308b\u305f\u3081\u306e\u6b63\u5f53\u306aJNDI Lookup\u6587\u5b57\u5217\u306e\u4f8b\u793a\" width=\"1368\" height=\"61\" \/><figcaption id=\"caption-attachment-121174\" class=\"wp-caption-text\">\u56f32. \u6b63\u5f53\u306aJNDI Lookup\u6587\u5b57\u5217<\/figcaption><\/figure>\n<p>\u591a\u304f\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u30ed\u30b0\u306e\u5185\u5bb9\u306f\u901a\u5e38\u30e6\u30fc\u30b6\u30fc\u306b\u516c\u958b\u3055\u308c\u3066\u304a\u308a\u3001\u653b\u6483\u8005\u304c\u5bb9\u6613\u306b\u5236\u5fa1\u3067\u304d\u308b\u3053\u3068\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u653b\u6483\u8005\u304c\u56f33\u306b\u793a\u3059\u3088\u3046\u306b\u6587\u5b57\u5217\u3092\u5236\u5fa1\u3057\u3001\u653b\u6483\u8005\u304c\u5236\u5fa1\u3059\u308bLDAP\u30b5\u30fc\u30d0\u30fc\u306b\u60aa\u610f\u306e\u3042\u308bJava\u30af\u30e9\u30b9\u3092\u8a2d\u5b9a\u3059\u308c\u3070\u3001<span style=\"font-family: 'courier new', courier, monospace;\">lookup<\/span>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30ea\u30e2\u30fc\u30c8LDAP\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u60aa\u610f\u306e\u3042\u308bJava\u30af\u30e9\u30b9\u3092\u5b9f\u884c\u3055\u305b\u3089\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121176\" aria-describedby=\"caption-attachment-121176\" style=\"width: 1367px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121177 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/12\/Screen-Shot-2021-12-10-at-3.35.29-PM.png\" alt=\"LDAP\u3092\u4f7f\u7528\u3057\u305f\u60aa\u610f\u306e\u3042\u308bJNDI Lookup\u6587\u5b57\u5217\u306e\u4f8b (CVE-2021-44228\u3092\u8aac\u660e\u3059\u308b\u76ee\u7684\u3067\u8868\u793a\u3057\u3066\u3044\u308b\u3082\u306e)\" width=\"1367\" height=\"62\" \/><figcaption id=\"caption-attachment-121176\" class=\"wp-caption-text\">\u56f33. LDAP\u3092\u4f7f\u3063\u305f\u60aa\u610f\u306e\u3042\u308bJNDI Lookup\u306e\u6587\u5b57\u5217<\/figcaption><\/figure>\n<p>log4j\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u975e\u5e38\u306b\u67d4\u8edf\u306a\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u5f37\u529b\u306a\u30ed\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u4fbf\u5229\u306a\u6a5f\u80fd\u306f\u540c\u6642\u306b\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u554f\u984c\u3092\u751f\u3058\u3055\u305b\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u3092\u614e\u91cd\u306b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3001\u305d\u306e\u30c7\u30fc\u30bf\u53b3\u5bc6\u306b\u30b5\u30cb\u30bf\u30a4\u30ba\u3057\u306a\u3051\u308c\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u3092\u76f2\u76ee\u7684\u306b\u4fe1\u983c\u3059\u308b\u3053\u3068\u3067\u3001\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2 id=\"exploit\">\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8<\/h2>\n<p>CVE-2021-44228\u306e\u8106\u5f31\u6027\u306f\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u30b3\u30fc\u30c9\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u8106\u5f31\u6027\u306e\u3042\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u306e log4j 2.x \u3092\u4f7f\u7528\u3057\u3066\u3044\u308b Java \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u306f\u3001Java \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u306e\u30ed\u30ae\u30f3\u30b0\u5b9f\u88c5\u65b9\u6cd5\u306b\u3088\u3063\u3066\u306f\u3001\u3053\u306e\u653b\u6483\u306b\u3055\u3089\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3><a id=\"in-the-wild-attacks\"><\/a>\u5b9f\u969b\u306b\u884c\u308f\u308c\u3066\u3044\u308b\u653b\u6483<\/h3>\n<p>\u3053\u308c\u307e\u3067\u306e\u3068\u3053\u308d\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u306f\u3001log4j\u306e\u8106\u5f31\u306a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u7279\u5b9a\u3059\u308b\u76ee\u7684\u3067\u3001\u5e83\u7bc4\u306a\u30b9\u30ad\u30e3\u30f3\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b9\u30ad\u30e3\u30f3\u306fHTTP\u7d4c\u7531\u3067\u884c\u308f\u308c\u3066\u304a\u308a\u3001\u7279\u5b9a\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3088\u3046\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u591a\u304f\u306f\u3001User-Agent\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5229\u7528\u3057\u3066\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u7279\u5b9a\u3057\u3001\u60aa\u7528\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u4f8b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_121179\" aria-describedby=\"caption-attachment-121179\" style=\"width: 1367px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121180 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/12\/Screen-Shot-2021-12-10-at-3.50.07-PM.png\" alt=\"CVE-2021-44228\u306b\u8106\u5f31\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u7279\u5b9a\u3057\u3066\u60aa\u7528\u3057\u3088\u3046\u3068\u3059\u308b\u653b\u6483\u8005\u304c\u884c\u3046\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u4f8b\u3067\u3059\u3002\" width=\"1367\" height=\"238\" \/><figcaption id=\"caption-attachment-121179\" class=\"wp-caption-text\">\u56f34. \u30ea\u30af\u30a8\u30b9\u30c8\u306e\u4f8b<\/figcaption><\/figure>\n<p>base64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30ed\u30b0\u304c\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30de\u30f3\u30c9\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121181\" aria-describedby=\"caption-attachment-121181\" style=\"width: 1392px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121182 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/12\/Screen-Shot-2021-12-10-at-3.52.04-PM.png\" alt=\"base64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30ed\u30b0\u304c\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30de\u30f3\u30c9\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002 \" width=\"1392\" height=\"115\" \/><figcaption id=\"caption-attachment-121181\" class=\"wp-caption-text\">\u56f35. Base64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30ed\u30b0\u304c\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u308b\u3068\u8868\u793a\u3055\u308c\u308b\u30b3\u30de\u30f3\u30c9<\/figcaption><\/figure>\n<p>\u3053\u306e\u5927\u898f\u6a21\u306a\u30b9\u30ad\u30e3\u30f3\u3067\u89b3\u6e2c\u3055\u308c\u305f\u4ed6\u306e\u30b3\u30de\u30f3\u30c9\u306b\u306f\u3001<a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/kinsing-ja\/\">Kinsing<\/a>\u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc\u30de\u30eb\u30a6\u30a7\u30a2\u30d5\u30a1\u30df\u30ea\u306b\u5e30\u5c5e\u3059\u308b\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121183\" aria-describedby=\"caption-attachment-121183\" style=\"width: 1398px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121184 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/12\/Screen-Shot-2021-12-10-at-3.53.23-PM.png\" alt=\"\u3053\u306e\u5927\u898f\u6a21\u306a\u30b9\u30ad\u30e3\u30f3\u3067\u89b3\u6e2c\u3055\u308c\u305f\u4ed6\u306e\u30b3\u30de\u30f3\u30c9\u306b\u306f\u3001\u3053\u306e\u56f3\u306b\u793a\u3059\u3068\u304a\u308a\u3001Kinsing\u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc\u30de\u30eb\u30a6\u30a7\u30a2\u30d5\u30a1\u30df\u30ea\u306b\u5e30\u5c5e\u3059\u308b\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\" width=\"1398\" height=\"75\" \/><figcaption id=\"caption-attachment-121183\" class=\"wp-caption-text\">\u56f36. Kinsing \u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc\u30de\u30eb\u30a6\u30a7\u30a2\u30d5\u30a1\u30df\u30ea\u306b\u5e30\u5c5e\u3059\u308b\u30b3\u30de\u30f3\u30c9<\/figcaption><\/figure>\n<h2 id=\"log4j-exploitation-attempts\"><span style=\"font-weight: 400;\">Log4j\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306b\u95a2\u3059\u308b\u7d71\u8a08<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u304a\u5ba2\u69d8\u304c\u76f4\u9762\u3057\u3066\u3044\u308bLog4j\u306e\u6700\u8fd1\u306e\u8106\u5f31\u6027\u306e\u5f71\u97ff\u3092\u3088\u308a\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001Apache Log4j Remote Code Execution Vulnerability\u8105\u5a01\u9632\u5fa1\u30b7\u30b0\u30cd\u30c1\u30e3\u306e\u30d2\u30c3\u30c8\u6570\u30922021\u5e7412\u670810\u65e5\uff5e2022\u5e742\u67082\u65e5\u306b\u304b\u3051\u3066\u5206\u6790\u3057\u307e\u3057\u305f\u3002\u30c6\u30ec\u30e1\u30c8\u30ea\u306b\u57fa\u3065\u304d\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u305f\u95a2\u9023\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u542b\u30801\u51042,589\u4e074,944\u4ef6\u306e\u30d2\u30c3\u30c8\u304c\u89b3\u6e2c\u3055\u308c\u307e\u3057\u305f\u3002\u56f37\u306f\u30011\u65e5\u3042\u305f\u308a\u306e\u30d2\u30c3\u30c8\u6570\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u306f12\u670812\u65e5\u304b\u308916\u65e5\u306b\u304b\u3051\u3066\u306e\u5927\u304d\u306a\u30b9\u30d1\u30a4\u30af\u300112\u670816\u65e5\u304b\u308921\u65e5\u306b\u304b\u3051\u3066\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u6f38\u6e1b\u304c\u898b\u3089\u308c\u30012022\u5e741\u67081\u65e5\u306b\u306f\u518d\u3073\u5927\u304d\u306a\u30b9\u30d1\u30a4\u30af\u3092\u8a18\u9332\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u65b0\u5e74\u306e\u6025\u5897\u5f8c\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u306e\u30d2\u30c3\u30c8\u7d50\u679c\u306f\u30ab\u30a6\u30f3\u30c8\u304c\u65e5\u3005\u30b8\u30b0\u30b6\u30b0\u306b\u4e0a\u4e0b\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u30b9\u30d1\u30a4\u30af\u306f\u4ee5\u524d\u306b\u6bd4\u3079\u3066\u5287\u7684\u306b\u5c11\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<figure id=\"attachment_122468\" aria-describedby=\"caption-attachment-122468\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122469 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/image1.png\" alt=\"Apache Log4j Remote Code Execution Vulnerability\u8105\u5a01\u9632\u5fa1\u30b7\u30b0\u30cd\u30c1\u30e3\u306e2021\u5e7412\u670810\u65e5\u304b\u30892022\u5e742\u67082\u65e5\u307e\u3067\u306e\u30d2\u30c3\u30c8\u6570\u3092\u5206\u6790\u3057\u307e\u3057\u305f\u3002\u30c6\u30ec\u30e1\u30c8\u30ea\u306b\u57fa\u3065\u304d\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u305f\u95a2\u9023\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u542b\u30801\u51042,589\u4e074,944\u4ef6\u306e\u30d2\u30c3\u30c8\u304c\u89b3\u6e2c\u3055\u308c\u307e\u3057\u305f\u3002\u56f37\u306f\u30011\u65e5\u3042\u305f\u308a\u306e\u30d2\u30c3\u30c8\u6570\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u306f12\u670812\u65e5\u304b\u308916\u65e5\u306b\u304b\u3051\u3066\u306e\u5927\u304d\u306a\u30b9\u30d1\u30a4\u30af\u300112\u670816\u65e5\u304b\u308921\u65e5\u306b\u304b\u3051\u3066\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u6f38\u6e1b\u304c\u898b\u3089\u308c\u30012022\u5e741\u67081\u65e5\u306b\u306f\u518d\u3073\u5927\u304d\u306a\u30b9\u30d1\u30a4\u30af\u3092\u8a18\u9332\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u65b0\u5e74\u306e\u6025\u5897\u5f8c\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u306e\u30d2\u30c3\u30c8\u7d50\u679c\u306f\u30ab\u30a6\u30f3\u30c8\u304c\u65e5\u3005\u30b8\u30b0\u30b6\u30b0\u306b\u4e0a\u4e0b\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u30b9\u30d1\u30a4\u30af\u306f\u4ee5\u524d\u306b\u6bd4\u3079\u3066\u5287\u7684\u306b\u5c11\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"554\" \/><figcaption id=\"caption-attachment-122468\" class=\"wp-caption-text\">\u56f37 Apache Log4j Remote Code Execution Vulnerability\u30b7\u30b0\u30cd\u30c1\u30e3\u306e\u30d2\u30c3\u30c8\u6570\u306e\u5206\u6790\u7d50\u679c(1\u65e5\u3042\u305f\u308a)<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">12\u670810\u65e5\u304b\u308931\u65e5\u306b\u304b\u3051\u3066\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u89e3\u6790\u3057\u305f\u3068\u3053\u308d\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u5185\u306e\u3055\u307e\u3056\u307e\u306a\u5834\u6240\u3001\u4e3b\u306bURL\u3084HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u30d8\u30c3\u30c0\u5185\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u304c\u51fa\u73fe\u3059\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u304b\u30897,057\u4e077,055\u500b\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u6587\u5b57\u5217\u3092\u62bd\u51fa\u3057\u305f\u3068\u3053\u308d\u300149%\u4ee5\u4e0a\u304cHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30c8\u30c3\u30d76\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3057\u305f(<\/span><span style=\"font-weight: 400;\">\u88681<\/span><span style=\"font-weight: 400;\">)\u3002\u306a\u304a\u591a\u304f\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u306fHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u5185\u306e\u8907\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u60aa\u610f\u306e\u3042\u308b\u6587\u5b57\u5217\u3092\u542b\u3093\u3067\u3044\u308b\u305f\u3081\u3001\u305d\u308c\u305e\u308c\u306e\u6587\u5b57\u5217\u304c\u3053\u306e\u6570\u5024\u306b\u91cd\u8907\u3057\u3066\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u3066\u3044\u308b\u70b9\u306b\u306f\u3054\u7559\u610f\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<table class=\"aligncenter\" style=\"width: 52.6858%;\">\n<tbody>\n<tr>\n<td style=\"width: 59.3301%;\"><b>HTTP\u30d5\u30a3\u30fc\u30eb\u30c9<\/b><\/td>\n<td style=\"width: 221.977%;\"><b>\u4ef6\u6570<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 59.3301%;\"><span style=\"font-weight: 400;\">Referer<\/span><\/td>\n<td style=\"width: 221.977%;\"><span style=\"font-weight: 400;\">8,598,333<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 59.3301%;\"><span style=\"font-weight: 400;\">X-Api-Version<\/span><\/td>\n<td style=\"width: 221.977%;\"><span style=\"font-weight: 400;\">8,084,382<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 59.3301%;\"><span style=\"font-weight: 400;\">Accept-Language<\/span><\/td>\n<td style=\"width: 221.977%;\"><span style=\"font-weight: 400;\">7,825,968<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 59.3301%;\"><span style=\"font-weight: 400;\">Cookie<\/span><\/td>\n<td style=\"width: 221.977%;\"><span style=\"font-weight: 400;\">4,193,821<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 59.3301%;\"><span style=\"font-weight: 400;\">User-Agent<\/span><\/td>\n<td style=\"width: 221.977%;\"><span style=\"font-weight: 400;\">3,318,942<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 59.3301%;\"><span style=\"font-weight: 400;\">URL<\/span><\/td>\n<td style=\"width: 221.977%;\"><span style=\"font-weight: 400;\">2,815,876<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><em><span style=\"font-weight: 400; font-size: 10pt;\">\u88681 Log4j\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u3067\u5229\u7528\u3055\u308c\u305fHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u5185\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u4e0a\u4f4d6\u3064<\/span><\/em><\/p>\n<h2 id=\"observed-activity\"><span style=\"font-weight: 400;\">\u89b3\u6e2c\u3055\u308c\u305f\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">2021\u5e7412\u670810\u65e5\u4ee5\u964d\u3001Log4j\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u3088\u308b\u3055\u307e\u3056\u307e\u306a\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u8a66\u884c\u304c\u89b3\u6e2c\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u306a\u304a\u3053\u308c\u3089\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u8a73\u7d30\u306e\u8abf\u67fb\u306f\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u6642\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u4e0a\u306b\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u3066\u3044\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u6790\u3059\u308b\u3053\u3068\u3067\u884c\u3044\u307e\u3057\u305f\u3002\u8981\u3059\u308b\u306b\u300c\u4eee\u306b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u6210\u529f\u3057\u3066\u3044\u305f\u3089\u4f55\u304c\u8d77\u3053\u3063\u3066\u3044\u305f\u306e\u304b\u300d\u306b\u3064\u3044\u3066\u8abf\u67fb\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u5f8c\u306b\u89b3\u5bdf\u3055\u308c\u305f\u6d3b\u52d5\u306f\u3001\u5927\u898f\u6a21\u30b9\u30ad\u30e3\u30f3\u3067\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u3092\u7279\u5b9a\u3059\u308b\u3068\u3044\u3046\u30b7\u30f3\u30d7\u30eb\u306a\u3082\u306e\u304b\u3089\u3001\u6a5f\u5bc6\u60c5\u5831\u306e\u6d41\u51fa\u3084\u8ffd\u52a0\u30c4\u30fc\u30eb\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u76ee\u7684\u3068\u3057\u305f\u30d0\u30c3\u30af\u30c9\u30a2\u306e\u8a2d\u7f6e\u3001\u91d1\u92ad\u7684\u5229\u76ca\u3092\u5f97\u308b\u305f\u3081\u306e\u30b3\u30a4\u30f3\u30de\u30a4\u30cb\u30f3\u30b0\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u307e\u3067\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u306a\u304a\u5f0a\u793e\u30c6\u30ec\u30e1\u30c8\u30ea\u3067\u306f\u7d99\u7d9a\u3057\u3066\u653b\u6483\u304c\u767a\u898b\u3055\u308c\u7d9a\u3051\u3066\u3044\u308b\u305f\u3081\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8aac\u660e\u3057\u305f\u4e8b\u4f8b\u306f\u307e\u3063\u305f\u304f\u7db2\u7f85\u7684\u306a\u5185\u5bb9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/span><\/p>\n<h3 id=\"mass-scanning\"><span style=\"font-weight: 400;\">\u5927\u898f\u6a21\u30b9\u30ad\u30e3\u30f3<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Apache Log4j Remote Code Execution Vulnerability\u30b7\u30b0\u30cd\u30c1\u30e3\u306b\u95a2\u9023\u3059\u308b\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u5206\u6790\u3057\u305f\u3068\u3053\u308d\u3001Log4j\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306e\u5927\u534a\u306f\u5927\u898f\u6a21\u306a\u8106\u5f31\u6027\u30b9\u30ad\u30e3\u30f3\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/span><span style=\"font-weight: 400;\">\u88682<\/span><span style=\"font-weight: 400;\">\u306f\u3001Log4j\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u6587\u5b57\u5217\u5185\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u306b\u898b\u3089\u308c\u308b\u4e0a\u4f4d\u30c9\u30e1\u30a4\u30f3\u3068IP\u30a2\u30c9\u30ec\u30b9\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u3089\u304c12\u670810\u65e5\u304b\u308931\u65e5\u306b\u304b\u3051\u3066\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u30d2\u30c3\u30c8\u6570\u306e80%\u5f37\u3092\u5360\u3081\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u306b\u898b\u3089\u308c\u308b\u3059\u3079\u3066\u306eRFC1918\u306eIP\u30a2\u30c9\u30ec\u30b9(IPv4\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30c9\u30ec\u30b9\u7bc4\u56f2)\u3092\u5404\u30a2\u30c9\u30ec\u30b9\u7bc4\u56f2(10\/8\u3001172.16\/12\u3001192.168\/16)\u306b\u5206\u985e\u3059\u308b\u3068\u3001\u3053\u306e\u6642\u9593\u5e2f\u306b\u30d2\u30c3\u30c8\u3057\u305f\u30b7\u30b0\u30cd\u30c1\u30e3\u306e54\uff05\u306f\u5185\u90e8\u30b9\u30ad\u30e3\u30f3\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u3053\u306e\u30ea\u30b9\u30c8\u3067\u306f<span style=\"font-family: 'courier new', courier, monospace;\">nessus[.]org <\/span>\u306a\u3069\u306e\u6709\u540d\u3069\u3053\u308d\u306e\u8106\u5f31\u6027\u30b9\u30ad\u30e3\u30f3\u30b5\u30fc\u30d3\u30b9\u3082<\/span><span style=\"font-weight: 400;\">\u30ea\u30e2\u30fc\u30c8\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u542b\u3080\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u30c8\u30c3\u30d7\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<table class=\"aligncenter\" style=\"width: 52.7099%;\">\n<tbody>\n<tr>\n<td style=\"width: 68.6007%;\"><b>\u30c9\u30e1\u30a4\u30f3\/IP<\/b><\/td>\n<td style=\"width: 136.119%;\"><b>\u4ef6\u6570<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">10.0.0.0\/8<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">36,563,784<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">nessus[.]org<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">14,638,414<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">172.16.0.0\/12<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">1,818,036<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">interact[.]sh<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">852,778<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">oob[.]li<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">571,042<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">sploit[.]in<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">552,521<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">45.83.64[.]1<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">346,888<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">195.54.160[.]149<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">250,042<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">canarytokens[.]com<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">198,954<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">automationyesterday[.]com<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">166,206<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">45.83.193[.]150<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">120,707<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">64.39.98[.]200<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">118,860<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">praetorian[.]com<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">115,739<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">192.168.0.0\/16<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">86,513<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">securitysupport[.]tech<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">83,875<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">upguard[.]com<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">83,379<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">193.3.19[.]159<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">80,075<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">interactsh[.]com<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">68,959<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">5.101.118[.]127<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">51,515<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">burpcollaborator[.]net<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">51,066<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">31.131.16[.]127<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">48,119<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">45.66.8[.]12<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">46,753<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 68.6007%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">185.246.87[.]50<\/span><\/td>\n<td style=\"width: 136.119%;\"><span style=\"font-weight: 400;\">44,516<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><em><span style=\"font-weight: 400; font-size: 10pt;\">\u88682 Log4j\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u3067\u898b\u3089\u308c\u305f\u4e0a\u4f4d\u30c9\u30e1\u30a4\u30f3\u3068IP\u30a2\u30c9\u30ec\u30b9<\/span><\/em><\/p>\n<h3 id=\"vulnerable-server-discovery\"><span style=\"font-weight: 400;\">\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u306e\u767a\u898b<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u79c1\u305f\u3061\u304c\u89b3\u6e2c\u3057\u305f\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u306e\u591a\u304f\u306f\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u6210\u529f\u3092\u9001\u4fe1\u8005\u306b\u901a\u77e5\u3059\u308b\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3060\u3051\u306e\u3082\u306e\u3067\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u8a66\u307f\u306e\u3059\u3079\u3066\u304c\u30b9\u30ad\u30e3\u30f3\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u305f\u306e\u304b\u3001\u60aa\u610f\u306e\u3042\u308b\u30a2\u30af\u30bf\u30fc\u306e\u5075\u5bdf\u6d3b\u52d5\u306e\u4e00\u74b0\u3067\u3042\u3063\u305f\u306e\u304b\u306f\u78ba\u8a8d\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u306e\u306a\u304b\u306b\u306f\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u3068\u306e\u6700\u521d\u306e\u3084\u308a\u3068\u308a\u304c\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u3068\u3044\u3046\u3060\u3051\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u3082\u3042\u308a\u3001\u305d\u306e\u591a\u304f\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u306b\u898b\u3089\u308c\u308b\u3088\u3046\u306a\u300c\u30ab\u30ca\u30ea\u30a2\u30c8\u30fc\u30af\u30f3\u300d\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">x[hostname].l4j.2sk9753uabgse6xz75tooe5ix.canarytokens[.]com<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305f\u3060\u3057\u3001\u30a2\u30af\u30bf\u30fc\u304c\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089Java\u30af\u30e9\u30b9\u3092\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u5f53\u8a72\u306e\u8106\u5f31\u6027\u3092\u30d5\u30eb\u306b\u60aa\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u3089\u306eJava\u30af\u30e9\u30b9\u3067\u306f\u3001\u5916\u90e8\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u63a5\u7d9a\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8106\u5f31\u6027\u306e\u6709\u7121\u3084\u60aa\u7528\u306e\u53ef\u5426\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u3053\u3053\u6570\u65e5\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u3067\u89b3\u6e2c\u3055\u308c\u305f\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ldap:\/\/2.57.121[.]36:8000\/mss_useragent<br \/>\n<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ldap:\/\/2.57.121[.]36:8000\/mss_xapi<br \/>\n<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ldap:\/\/2.57.121[.]36:8000\/mss_xforward<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306eURL\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u5f53\u8a72\u30b5\u30fc\u30d0\u30fc\u306f<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/2.57.121[.]36\/Rjava.class<\/span><span style=\"font-weight: 400;\">\u306b\u3042\u308bJava\u30af\u30e9\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002 \u3053\u306e\u30b3\u30fc\u30c9\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u306e\u304c <\/span><span style=\"font-weight: 400;\">\u56f38<\/span>\u306b\u793a\u3059\u5185\u5bb9\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_121326\" aria-describedby=\"caption-attachment-121326\" style=\"width: 1654px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121327 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-8.png\" alt=\"Rjava.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u78ba\u8a8d\u3055\u308c\u305fJava\u306e\u30b3\u30fc\u30c9\" width=\"1654\" height=\"546\" \/><figcaption id=\"caption-attachment-121326\" class=\"wp-caption-text\">\u56f38 Rjava.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u78ba\u8a8d\u3055\u308c\u305fJava\u306e\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">\u898b\u308c\u3070\u308f\u304b\u308b\u3068\u304a\u308a\u3053\u306eJava\u30b3\u30fc\u30c9\u306f<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/2.57.121[.]36\/juccess<\/span><span style=\"font-weight: 400;\">\u3078\u306eHTTP GET\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u767a\u884c\u3059\u308b\u3060\u3051\u3067\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u5bfe\u3057\u3066\u306f\u4f55\u3082\u884c\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u3053\u306eJava\u30b3\u30fc\u30c9\u306e\u767a\u884c\u8005\u306f\u3001\u5bfe\u8c61\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u8106\u5f31\u6027\u304c\u3042\u308a\u3001\u3053\u306eJava\u30af\u30e9\u30b9\u3092\u6b63\u5e38\u306b\u5b9f\u884c\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u76ee\u7684\u3067\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/span><\/p>\n<h3 id=\"v8-password-stealer\"><span style=\"font-weight: 400;\">V8\u30d1\u30b9\u30ef\u30fc\u30c9\u30b9\u30c6\u30a3\u30fc\u30e9<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u3053\u3046\u3057\u305f\u8106\u5f31\u6027\u30b9\u30ad\u30e3\u30f3\u306b\u52a0\u3048\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u6210\u529f\u3057\u3066\u30a4\u30f3\u30d5\u30a9\u30b9\u30c6\u30a3\u30fc\u30e9\u304c\u5b9f\u884c\u3055\u308c\u305f\u4f8b\u3082\u89b3\u6e2c\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u4e0b\u8a18\u306e\u4f8b\u306b\u793a\u3057\u305f\u3088\u3046\u306b\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u306b<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">1ma[.]xyz<\/span><span style=\"font-weight: 400;\">\u3068\u3044\u3046\u30c9\u30e1\u30a4\u30f3\u3092\u542b\u3080\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u3092\u4f7f\u7528\u3057\u305f\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u304c\u8907\u6570\u89b3\u6e2c\u3055\u308c\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">&lt;\u7701\u7565&gt;.com.80.reference.1ma[.]xyz:1389\/a<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4e0a\u8a18URL\u306b\u3088\u308a\u4ee5\u4e0b\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3082\u305f\u3089\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<p><figure id=\"attachment_121328\" aria-describedby=\"caption-attachment-121328\" style=\"width: 706px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121329 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-9.png\" alt=\"1ma[.]xyz\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u3001\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u304b\u3089Java\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304c\u53d6\u5f97\u3055\u308c\u308b\" width=\"706\" height=\"274\" \/><figcaption id=\"caption-attachment-121328\" class=\"wp-caption-text\">\u56f39 1ma[.]xyz\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u3001\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u304b\u3089Java\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304c\u53d6\u5f97\u3055\u308c\u308b<\/figcaption><\/figure><span style=\"font-weight: 400;\">\u4e0a\u8a18\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30a2\u30af\u30bb\u30b9\u5f8c\u3001\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u306fURL <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/161.35.184[.]54:9998\/V8.class<\/span><span style=\"font-weight: 400;\">\u304b\u3089Java\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u304d\u307e\u3059\u3002\u3053\u306eJava\u306e\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304c\u8fd4\u3057\u3066\u304f\u308bJava\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b <\/span><span style=\"font-weight: 400;\">\u56f310<\/span>\u3067\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121330\" aria-describedby=\"caption-attachment-121330\" style=\"width: 1654px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121331 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-10.png\" alt=\"V8.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9\" width=\"1654\" height=\"1262\" \/><figcaption id=\"caption-attachment-121330\" class=\"wp-caption-text\">\u56f310 V8.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">\u4e0a\u8a18\u30b3\u30fc\u30c9\u306f\u3001HTTP POST\u30ea\u30af\u30a8\u30b9\u30c8\u3084DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3092\u4ecb\u3057\u3066\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u60c5\u5831\u3092\u6d41\u51fa\u3055\u305b\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002HTTP POST\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u4ee5\u4e0b\u306eURL\u306b\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\"><span style=\"font-weight: 400;\">hxxp:\/\/[hostname].[username]8.pef.mur.1ma[.]xyz\/<br \/>\n<\/span><span style=\"font-weight: 400;\">hxxp:\/\/[hostname].[username]5.pef.mur.1ma[.]xyz:53\/<br \/>\n<\/span><span style=\"font-weight: 400;\">hxxps:\/\/[hostname].[username]4.pef.mur.1ma[.]xyz\/<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u69cb\u9020\u3067\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u30af\u30a8\u30ea\u3092\u884c\u3046\u3053\u3068\u3067\u30c7\u30fc\u30bf\u3092\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">[hostname].[20 bytes of data].[chunk number].spif.mur.1ma.xyz<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u3053\u3067C2\u30c9\u30e1\u30a4\u30f3\u306b\u6d41\u51fa\u3055\u308c\u308b\u306e\u306f\u30012\u7a2e\u985e\u306e\u4e00\u822c\u7684\u306a\u60c5\u5831\u3067\u3059\u30021\u7a2e\u985e\u3081\u306f\u4fb5\u5bb3\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u306b\u3042\u308b\u6a5f\u5fae\u306a <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">\/etc\/passwd<\/span><span style=\"font-weight: 400;\"> \u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3067\u3059\u30022\u7a2e\u985e\u3081\u306f\u74b0\u5883\u5909\u6570\u540d\u3068\u305d\u308c\u305e\u308c\u306e\u5024\u3067\u3001\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3053\u308c\u3089\u306e\u60c5\u5831\u3082\u53d6\u5f97\u3057\u3066C2\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u3053\u306eJava\u30b3\u30fc\u30c9\u306f\u3001<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">curl<\/span><span style=\"font-weight: 400;\">\u3084 <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">wget<\/span><span style=\"font-weight: 400;\">\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3082C2\u30b5\u30fc\u30d0\u3078\u306e\u30c7\u30fc\u30bf\u9001\u4fe1\u3092\u8a66\u307f\u307e\u3059(<\/span><span style=\"font-weight: 400;\">\u56f311\u53c2\u7167)\u3002<\/span><\/p>\n<figure id=\"attachment_121332\" aria-describedby=\"caption-attachment-121332\" style=\"width: 1999px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121333 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/figure-11.png\" alt=\"V8.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9\u5185\u3067\u78ba\u8a8d\u3055\u308c\u305f\u8ffd\u52a0\u306e\u30b3\u30de\u30f3\u30c9\" width=\"1999\" height=\"1070\" \/><figcaption id=\"caption-attachment-121332\" class=\"wp-caption-text\">\u56f311 V8.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9\u5185\u3067\u78ba\u8a8d\u3055\u308c\u305f\u8ffd\u52a0\u306e\u30b3\u30de\u30f3\u30c9<\/figcaption><\/figure>\n<h3 id=\"happy-everyday-cobaltstrike\"><span style=\"font-weight: 400;\">Happy Everyday!\u3068CobaltStrike<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u60c5\u5831\u7a83\u53d6\u306e\u307b\u304b\u306b\u306f\u3001Log4j\u3092\u60aa\u7528\u3057\u3066\u30d0\u30c3\u30af\u30c9\u30a2\u304c\u8a2d\u7f6e\u3055\u308c\u308b\u4f8b\u3082\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306a\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u3092\u542b\u3080\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u304c\u898b\u3089\u308c\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ldap:\/\/139.155.2[.]105:8888\/EvilObj<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4e0a\u8a18URL\u306b\u3088\u308a\u4ee5\u4e0b\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3082\u305f\u3089\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<figure id=\"attachment_121334\" aria-describedby=\"caption-attachment-121334\" style=\"width: 718px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121335 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-12.png\" alt=\"\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u3001\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u304b\u3089Java\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304c\u53d6\u5f97\u3055\u308c\u308b\" width=\"718\" height=\"274\" \/><figcaption id=\"caption-attachment-121334\" class=\"wp-caption-text\">\u56f312. \u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u3001\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u304b\u3089Java\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304c\u53d6\u5f97\u3055\u308c\u308b<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/139.155.2[.]105:8081<\/span><span style=\"font-weight: 400;\">\u304b\u3089\u306e<span style=\"font-weight: 400;\">EvilObj.class\u3068\u3044\u3046 <\/span>\u30d5\u30a1\u30a4\u30eb\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u3068\u3001<\/span><span style=\"font-weight: 400;\">\u56f313\u306b\u793a\u3057\u305fJava\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 <\/span><\/p>\n<figure id=\"attachment_121336\" aria-describedby=\"caption-attachment-121336\" style=\"width: 1654px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121337 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-13.png\" alt=\"EvilObj.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9\u306b\u306fC2\u306e\u60c5\u5831\u3068\u300chappy everyday\u300d\u306e\u4f7f\u3044\u65b9\u304c\u793a\u3055\u308c\u3066\u3044\u308b \" width=\"1654\" height=\"1262\" \/><figcaption id=\"caption-attachment-121336\" class=\"wp-caption-text\">\u56f313. EvilObj.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30b3\u30fc\u30c9\u306b\u306fC2\u306e\u60c5\u5831\u3068\u300chappy everyday\u300d\u306e\u4f7f\u3044\u65b9\u304c\u793a\u3055\u308c\u3066\u3044\u308b<\/figcaption><\/figure>\n<p>\u4e0a\u306e<span style=\"font-weight: 400;\">\u56f313 <\/span><span style=\"font-weight: 400;\">\u306eJava \u306f\u3001<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">139.155.2[.]105:1234<\/span><span style=\"font-weight: 400;\">\u306b\u5bfe\u3057\u3066raw\u30bd\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u30bd\u30b1\u30c3\u30c8\u3092\u4ecb\u3057\u3066\u4ee5\u4e0b\u306e\u4f7f\u7528\u65b9\u6cd5\u793a\u3092\u9001\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">happy everyday!<br \/>\n<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">help: list [dir] | read [file] | exec [cmd]<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">list<\/span><span style=\"font-weight: 400;\">\u30b3\u30de\u30f3\u30c9\u306f\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u306e\u6307\u5b9a\u3059\u308b\u30d1\u30b9\u4e0a\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3057\u3001 <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">read<\/span><span style=\"font-weight: 400;\">\u30b3\u30de\u30f3\u30c9\u306f\u6307\u5b9a\u3055\u308c\u305f\u30d1\u30b9\u306b\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u308a\u307e\u3059\u3002<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">exec<\/span><span style=\"font-weight: 400;\">\u30b3\u30de\u30f3\u30c9\u306f <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">Java.lang.Runtime.exec<\/span><span style=\"font-weight: 400;\"> \u30e1\u30bd\u30c3\u30c9\u3068\u4f7f\u3063\u3066\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u30a2\u30af\u30bf\u30fc\u306b\u9001\u308a\u8fd4\u3057\u307e\u3059\u3002\u3053\u308c\u30893\u3064\u306e\u30b3\u30de\u30f3\u30c9\u306f\u5bfe\u8c61\u30b7\u30b9\u30c6\u30e0\u3092\u5b8c\u5168\u306b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">2021\u5e7412\u670818\u65e5\u3001\u79c1\u305f\u3061\u306f\u3001CobaltStrike\u30b5\u30fc\u30d0\u30fc\u304c<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">139.155.2[.]105<\/span><span style=\"font-weight: 400;\">\u306b\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u306e\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u3053\u306eCobaltStrike\u30b5\u30fc\u30d0\u30fc\u306fTCP\/4433\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u304a\u308a\u3001CobaltStrike\u30d3\u30fc\u30b3\u30f3\u306e\u69cb\u6210\u306f\u3001<\/span><span style=\"font-weight: 400;\">\u56f314<\/span><span style=\"font-weight: 400;\">\u306b\u793a\u3057\u305f\u3068\u304a\u308a\u3067\u3059\u3002<\/span><\/p>\n<p><figure id=\"attachment_121338\" aria-describedby=\"caption-attachment-121338\" style=\"width: 1486px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121339 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-14.png\" alt=\"139.155.2[.]105\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u30d3\u30fc\u30b3\u30f3\u304b\u3089\u30c7\u30b3\u30fc\u30c9\u3057\u305fCobaltStrike\u306e\u8a2d\u5b9a\" width=\"1486\" height=\"556\" \/><figcaption id=\"caption-attachment-121338\" class=\"wp-caption-text\">\u56f314 139.155.2[.]105\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u30d3\u30fc\u30b3\u30f3\u304b\u3089\u30c7\u30b3\u30fc\u30c9\u3057\u305fCobaltStrike\u306e\u8a2d\u5b9a<\/figcaption><\/figure><span style=\"font-weight: 400;\">\u79c1\u305f\u3061\u306f\u3053\u306e\u30a2\u30af\u30bf\u30fc\u304cLog4j\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u3066CobaltStrike\u3092\u76f4\u63a5\u30c7\u30d7\u30ed\u30a4\u3057\u305f\u3053\u3068\u306f\u78ba\u8a8d\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u3001Log4j\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u3066\u5b9f\u884c\u3055\u308c\u308b\u30d0\u30c3\u30af\u30c9\u30a2\u300chappy everyday!\u300d\u3092\u4ecb\u3057\u3001CobaltStrike\u306e\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u53ef\u80fd\u306f\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n<h3 id=\"coinminer\"><span style=\"font-weight: 400;\">XMRig\u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc\u00a0<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u91d1\u92ad\u7684\u52d5\u6a5f\u3092\u6301\u3064\u30a2\u30af\u30bf\u30fc\u304cLog4j\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u3066\u30b3\u30a4\u30f3\u30de\u30a4\u30cb\u30f3\u30b0\u7528\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u5f62\u8de1\u3082\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u3088\u3046\u306a\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u3092\u542b\u3080\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u304c\u898b\u3089\u308c\u307e\u3057\u305f\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ldap:\/\/192.46.216[.]224:1389\/Exploit<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u3067\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5fdc\u7b54\u304c\u8fd4\u308a\u307e\u3059\u3002\u00a0<\/span><\/p>\n<figure id=\"attachment_121340\" aria-describedby=\"caption-attachment-121340\" style=\"width: 1092px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121341 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-15.png\" alt=\"\u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3002\u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308bJava\u30af\u30e9\u30b9\u3092\u8fd4\u3057\u3066\u3044\u308b\" width=\"1092\" height=\"274\" \/><figcaption id=\"caption-attachment-121340\" class=\"wp-caption-text\">\u56f315. \u30b3\u30fc\u30eb\u30d0\u30c3\u30afURL\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3002\u30b3\u30a4\u30f3\u30de\u30a4\u30ca\u30fc\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308bJava\u30af\u30e9\u30b9\u3092\u8fd4\u3057\u3066\u3044\u308b<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/165.22.2[.]186:80\/wp-content\/themes\/twentyseventeen\/Exploit.class<\/span><span style=\"font-weight: 400;\">\u304c\u8fd4\u3057\u305fJava\u30af\u30e9\u30b9\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u5185\u5bb9\u3092<\/span><span style=\"font-weight: 400;\">\u56f316<\/span><span style=\"font-weight: 400;\">\u306b\u793a\u3057\u307e\u3059\u3002<\/span><\/p>\n<figure id=\"attachment_121342\" aria-describedby=\"caption-attachment-121342\" style=\"width: 1999px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121343 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-16.png\" alt=\"Exploit.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305fJava\u306e\u30b3\u30fc\u30c9\" width=\"1999\" height=\"470\" \/><figcaption id=\"caption-attachment-121342\" class=\"wp-caption-text\">\u56f316. Exploit.class\u3092\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305fJava\u306e\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">\u56f316<\/span><span style=\"font-weight: 400;\">\u306eJava\u30b3\u30fc\u30c9\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304cOS\u3068\u3057\u3066Windows\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u5b9f\u884c\u3057\u3066\u3044\u308b\u5834\u5408\u306fPowerShell\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u8ffd\u52a0\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002\u6700\u521d\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306f<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/150.60.139[.]51:80\/wp-content\/themes\/twentyseventeen\/s.cmd<\/span><span style=\"font-weight: 400;\">\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u305f\u3082\u306e\u3067\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u304b\u3089\u5b9f\u884c\u3055\u308c\u308b\u4ee5\u4e0b\u306ePowerShell\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<figure id=\"attachment_121344\" aria-describedby=\"caption-attachment-121344\" style=\"width: 1999px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121345 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Figure-17.png\" alt=\"\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u305fs.cmd\u30d5\u30a1\u30a4\u30eb\u306b\u542b\u307e\u308c\u308bPowerShell\u30b3\u30de\u30f3\u30c9\" width=\"1999\" height=\"71\" \/><figcaption id=\"caption-attachment-121344\" class=\"wp-caption-text\">\u56f317. \u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u305fs.cmd\u30d5\u30a1\u30a4\u30eb\u306b\u542b\u307e\u308c\u308bPowerShell\u30b3\u30de\u30f3\u30c9<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">\u3053\u306ePowerShell\u30b3\u30de\u30f3\u30c9\u306f\u3001<\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">hxxp:\/\/68.183.165[.]105:80\/wp-content\/themes\/twentyseventeen\/xmrig64.exe<\/span><span style=\"font-weight: 400;\">\u304b\u3089\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002 \u3053\u308c\u306f\u6697\u53f7\u901a\u8ca8Monero\u306e\u30de\u30a4\u30cb\u30f3\u30b0\u306b\u4f7f\u7528\u3055\u308c\u308bXMRig\u306e\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u3067\u3001\u5177\u4f53\u7684\u306b\u306f <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">46QBumovWy4dLJ4R8wq8JwhHKWMhCaDyNDEzvxHFmAHn92EyKrttq6LfV6if5UYDAyCzh3egWXMhnfJrEhWkMzqTPzGzsE<\/span><span style=\"font-weight: 400;\"> \u306e\u30a6\u30a9\u30ec\u30c3\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/span><\/p>\n<h2 id=\"patch-and-bypass\">\u30d1\u30c3\u30c1\u3068\u30d0\u30a4\u30d1\u30b9: CVE-2021-45046\u3001CVE-2021-45105\u3001CVE-2021-44832\u306b\u5bfe\u3059\u308b\u4fee\u6b63\u306e\u8ffd\u52a0<\/h2>\n<p>Apache\u306e\u516c\u5f0f\u30d1\u30c3\u30c1\u304c\u516c\u958b\u3055\u308c\u305f\u3053\u3068\u306b\u3088\u308a\u3001\u5f53\u521d\u306f2.15.0-rc1\u3067CVE-2021-44228\u306e\u8106\u5f31\u6027\u304c\u4fee\u6b63\u3055\u308c\u305f\u3082\u306e\u3068\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u5f8c\u5f53\u8a72\u30d1\u30c3\u30c1\u3092\u30d0\u30a4\u30d1\u30b9\u3059\u308b\u65b9\u6cd5\u304c\u767a\u898b\u3055\u308c\u307e\u3057\u305f\u3002\u65b0\u305f\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f2.15.0-rc2\u3067\u306f\u3001\u3053\u306e\u8106\u5f31\u6027\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u3092\u4fdd\u8b77\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><span style=\"font-weight: 400;\">12\u670814\u65e5\u3001Log4j 2.15.0\u3067\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u4fee\u6b63\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u4e0d\u5341\u5206\u3067\u3042\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002CVE-2021-45046\u304c<\/span><a href=\"https:\/\/lists.apache.org\/thread\/83y7dx5xvn3h5290q1twn16tltolv88f\"><span style=\"font-weight: 400;\">\u65b0\u305f\u306b\u767a\u898b\u3055\u308c\u305f\u8106\u5f31\u6027<\/span><\/a><span style=\"font-weight: 400;\">\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3057\u305f\u3002 12\u670817\u65e5\u3001Apache\u306f\u3053\u306e\u8106\u5f31\u6027\u306e\u6df1\u523b\u5ea6\u3092\u4e0a\u65b9\u306b\u4fee\u6b63\u3057\u3001\u7279\u5b9a\u306e\u72b6\u6cc1\u4e0b\u3067\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u306b\u5229\u7528\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3057\u305f\u3002<\/span><\/p>\n<p>12\u670817\u65e5\u3001<a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-45105\">CVE-2021-45105<\/a>\u3092\u4fee\u6b63\u3059\u308b\u30d0\u30fc\u30b8\u30e7\u30f32.17.0\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u65b0\u3057\u3044\u8106\u5f31\u6027\u306f\u3001\u30d0\u30fc\u30b8\u30e7\u30f32.16\u304c\u3001\u81ea\u5df1\u53c2\u7167\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306b\u3088\u308b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3055\u308c\u3066\u3044\u306a\u3044\u518d\u5e30\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u8d77\u56e0\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u304c\u60aa\u7528\u3055\u308c\u308b\u3068\u3001Log4j\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30d7\u30ed\u30bb\u30b9\u306b\u5bfe\u3057\u3066DoS\u653b\u6483\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u3001\u3053\u308c\u307e\u3067\u306eRCE\u306e\u8106\u5f31\u6027\u306b\u6bd4\u3079\u3066\u91cd\u8981\u5ea6\u306f\u4f4e\u3044\u3082\u306e\u306e\u3001\u3053\u308c\u306b\u3088\u308a\u653b\u6483\u8005\u304c\u8106\u5f31\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u30af\u30e9\u30c3\u30b7\u30e5\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6f5c\u5728\u7684\u306a\u7de9\u548c\u7b56\u306b\u3064\u3044\u3066\u306f\u3001Apache Log4j \u306e<a class=\"c-link\" tabindex=\"-1\" href=\"https:\/\/logging.apache.org\/log4j\/2.x\/security.html\" target=\"_blank\" rel=\"noopener noreferrer\" data-remove-tab-index=\"true\" data-sk=\"tooltip_parent\" data-stringify-link=\"https:\/\/logging.apache.org\/log4j\/2.x\/security.html\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30c9\u30d0\u30a4\u30b6\u30ea<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><span style=\"font-weight: 400;\">12\u670828\u65e5\u3001<\/span><a href=\"https:\/\/cve.mitre.org\/cgi-bin\/cvename.cgi?name=CVE-2021-44832\"><span style=\"font-weight: 400;\">CVE-2021-44832<\/span><\/a><span style=\"font-weight: 400;\">\u306e\u4fee\u6b63\u306e\u305f\u3081\u30d0\u30fc\u30b8\u30e7\u30f32.17.1\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002 \u3053\u306e\u65b0\u3057\u3044\u8106\u5f31\u6027\u306b\u3088\u308a\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u4ee5\u5916\u306e\u7279\u5b9a\u6761\u4ef6\u4e0b\u3067RCE\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/span><span style=\"font-weight: 400;\">\u653b\u6483\u8005\u304c\u30ed\u30b0\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u6a29\u9650\u3092\u6301\u3061\u3001JDBC Appender\u3092\u4f7f\u3063\u3066\u60aa\u610f\u306e\u3042\u308b\u8a2d\u5b9a\u3092\u884c\u3048\u308b\u5834\u5408\u3001\u3053\u306eJDBC Appender\u304cJDNI URI\u3092\u53c2\u7167\u3057\u3066\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30c7\u30d0\u30a4\u30b9\u4e0a\u3067\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\n<h2 id=\"log4j-timeline\">\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/h2>\n<figure id=\"attachment_121376\" aria-describedby=\"caption-attachment-121376\" style=\"width: 1280px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-121376 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/12\/Log4j-Timeline-1-jp2.png\" alt=\"Log4j\u306e\u8106\u5f31\u6027\u3001\u30d1\u30c3\u30c1\u3001\u8106\u5f31\u6027\u3078\u306e\u5bfe\u5fdc\u306b\u95a2\u3059\u308b\u91cd\u8981\u306a\u30cb\u30e5\u30fc\u30b9\u3092\u8a18\u8f09\u3057\u305f\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u3067\u3059\u3002\u3053\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306b\u306f\u3001CVE-2021-44228\u3001CVE-2021-45046\u3001CVE-2021-45105\u3001CVE-2021-44832\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \" width=\"1280\" height=\"720\" \/><figcaption id=\"caption-attachment-121376\" class=\"wp-caption-text\">\u56f318. Log4j\u306e\u8106\u5f31\u6027\u306b\u95a2\u9023\u3059\u308b\u6700\u8fd1\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/figcaption><\/figure>\n<h2 id=\"conclusion\">\u7d50\u8ad6<\/h2>\n<p><span style=\"font-weight: 400;\">CVE-2021-44228\u3001CVE-2021-45046\u3001CVE-2021-45105\u3001CVE-2021-44832\u306e\u8106\u5f31\u6027\u306f\u3001\u5f71\u97ff\u306e\u5168\u5bb9\u628a\u63e1\u306e\u305f\u3081\u3001\u4eca\u73fe\u5728\u3082\u7a4d\u6975\u7684\u306a\u8abf\u67fb\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u73fe\u5728\u5165\u624b\u53ef\u80fd\u306a\u60c5\u5831\u304b\u3089\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u306f\u73fe\u5728\u304a\u3088\u3073\u5c06\u6765\u306b\u304a\u3044\u3066\u3001\u6df1\u523b\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u591a\u304f\u306f\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u7686\u69d8\u306b\u304a\u304b\u308c\u307e\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u901a\u308a\u3001\u3053\u308c\u3089\u306e\u8106\u5f31\u6027\u304b\u3089\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u63aa\u7f6e\u3092\u8b1b\u3058\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p>Unit 42\u306f\u3001\u5f0a\u793e\u306e\u6a5f\u5668\u3084\u30af\u30e9\u30a6\u30c9\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u4ecb\u3057\u305f\u7570\u5e38\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u7a4d\u6975\u7684\u306b\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/2022\/01\/defense-for-apache-log4j\/?lang=ja\">\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306f\u3053\u306e\u8106\u5f31\u6027\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306b\u5bfe\u3059\u308b\u4fdd\u8b77<\/a>\u3092\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>(<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">PA-Series<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/prisma\/vm-series\">VM-Series<\/a>\u3001 <a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/cn-series\">CN-Series<\/a>)\u307e\u305f\u306f<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/subscriptions\/threat-prevention\">\u8105\u5a01\u9632\u5fa1<\/a>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u6301\u3064<a href=\"https:\/\/www.paloaltonetworks.com\/sase\/access\">Prisma Access<\/a>\u306f\u3001\u4ee5\u4e0b\u306e\u8105\u5a01ID\u3067\u3053\u306e\u8106\u5f31\u6027\u306b\u95a2\u9023\u3059\u308b\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u81ea\u52d5\u7684\u306b\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">91991, 91994, 91995, 92001, 92007, 92012 (Application and Threat content update 8506)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u3059\u3067\u306b\u5f0a\u793e\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3057\u305f\u304c\u3063\u3066\u5bfe\u7b56\u3092\u3055\u308c\u3066\u3044\u308b\u304a\u5ba2\u69d8\u306f\u3001\u3053\u308c\u3089\u306e\u653b\u6483\u306b\u5bfe\u3057\u3001\u624b\u52d5\u3067\u4ecb\u5165\u3059\u308b\u3053\u3068\u306a\u304f\u81ea\u52d5\u7684\u306b\u4fdd\u8b77\u304c\u63d0\u4f9b\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u306f\u653b\u6483\u306e\u6700\u521d\u306e\u30b9\u30c6\u30fc\u30b8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u304c\u9069\u5207\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30dd\u30ea\u30b7\u30fc\u306b\u9069\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3001\u300cCritical(\u7dca\u6025)\u300d\u30ec\u30d9\u30eb\u306e\u8106\u5f31\u6027\u304c\u300creset(\u30ea\u30bb\u30c3\u30c8)\u300d\u307e\u305f\u306f\u300cdefault(\u30c7\u30d5\u30a9\u30eb\u30c8)\u300d\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u307e\u305fLog4j\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306b\u306f\u5916\u90e8\u306b\u30db\u30b9\u30c8\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002Advanced URL Filtering \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9\u306f\u5e38\u6642\u76e3\u8996\u3092\u7d99\u7d9a\u3057\u3001\u65b0\u305f\u306a\u672a\u77e5\/\u65e2\u77e5\u306e\u60aa\u610f\u306e\u3042\u308b\u30c9\u30e1\u30a4\u30f3\/Web\u30b5\u30a4\u30c8\u306b\u3088\u308b\u5b89\u5168\u3067\u306a\u3044\u5916\u90e8\u3078\u306e\u63a5\u7d9a\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u3055\u3089\u306b\u3001\u9069\u5207\u306a\u51fa\u53e3\u65b9\u5411(Egress)\u306e\u30a2\u30d7\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u4f7f\u3048\u3070\u653b\u6483\u306e\u7b2c2\u6bb5\u968e\u3092\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">ldap<\/span>\u3001<span style=\"font-family: 'courier new', courier, monospace;\">rmi-iiop<\/span>\u306eApp-ID\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u4fe1\u983c\u3055\u308c\u3066\u3044\u306a\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u4e88\u671f\u305b\u306c\u63a5\u7d9a\u5143\u3068\u306e\u9593\u306e\u3059\u3079\u3066\u306eRMI\u3001LDAP\u3092\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">HTTPS\u3092\u4ecb\u3057\u305f\u65e2\u77e5\u306e\u653b\u6483\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u306b\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u4e0a\u3067\u300cSSL\u5fa9\u53f7\u5316\u300d\u3092\u6709\u52b9\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">log4j\u304c\u81ea\u793e\u74b0\u5883\u5185\u306b\u3042\u308b\u304a\u5ba2\u69d8\u306f\u3001\u5404\u30d9\u30f3\u30c0\u304c\u6307\u793a\u306b\u3057\u305f\u304c\u3044\u3001\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u307e\u305f\u306f\u7de9\u548c\u7b56\u306e\u9069\u7528\u3092\u884c\u3046\u3088\u3046\u306b\u3057\u3001\u8105\u5a01\u9632\u5fa1\u30b7\u30b0\u30cd\u30c1\u30e3\u3060\u3051\u306b\u305f\u3088\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-weight: 400;\">Cortex XDR\u3067Linux\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3068\u30b3\u30f3\u30c6\u30f3\u30c4290-78377\u3092\u7a3c\u50cd\u3057\u3066\u3044\u308b\u304a\u5ba2\u69d8\u306f\u3001\u3059\u3079\u3066\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u30c1\u30a7\u30a4\u30f3\u304b\u3089<\/span><a href=\"https:\/\/docs.paloaltonetworks.com\/cortex\/cortex-xdr\/cortex-xdr-prevent-admin\/endpoint-security\/endpoint-protection-modules.html\"><span style=\"font-weight: 400;\">Java Deserialization Exploit protection module<\/span><\/a><span style=\"font-weight: 400;\">\u306b\u3088\u308a\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002Cortex XDR\u306e\u304a\u5ba2\u69d8\u306f\u3001BTP (Behavioral Threat Protection) \u306b\u3088\u308a\u3001CVE-2021-44228\u306b\u8d77\u56e0\u3059\u308b\u69d8\u3005\u306a\u89b3\u6e2c\u6e08\u307f\u30da\u30a4\u30ed\u30fc\u30c9\u304b\u3089\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001Analytics\u3092\u4f7f\u7528\u3057\u3066\u3044\u308bXDR Pro\u306e\u304a\u5ba2\u69d8\u306f\u3001\u3053\u306e\u8106\u5f31\u6027\u306b\u95a2\u9023\u3057\u305f\u30dd\u30b9\u30c8\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u6d3b\u52d5\u304c\u691c\u51fa\u3055\u308c\u307e\u3059\u3002<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cortex XSOAR\u3067\u300cCVE-2021-44228 - Log4j RCE\u300d\u30d1\u30c3\u30af\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u304a\u5ba2\u69d8\u306f\u3001\u540c\u8106\u5f31\u6027\u304c\u81ea\u52d5\u7684\u306b\u691c\u51fa\u30fb\u7de9\u548c\u3055\u308c\u307e\u3059\u3002 <\/span> <span style=\"font-weight: 400;\">\u8a73\u3057\u304f\u306f\u3001<\/span><a href=\"https:\/\/xsoar.pan.dev\/marketplace\/details\/CVE_2021_44228\"><span style=\"font-weight: 400;\">XSOAR \u30de\u30fc\u30b1\u30c3\u30c8\u30d7\u30ec\u30a4\u30b9<\/span><\/a>\u304b\u3089\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/prisma\/prisma-cloud\/prisma-cloud-admin-compute\/vulnerability_management\/vuln_management_rules\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/docs.paloaltonetworks.com\/prisma\/prisma-cloud\/prisma-cloud-admin-compute\/vulnerability_management\/vuln_management_rules&amp;source=gmail&amp;ust=1639406476861000&amp;usg=AOvVaw2hd8vFs_rCMsgYP30B3vM-\">Prisma Cloud Compute<\/a> Defender\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306f\u3001\u7d99\u7d9a\u7684\u30a4\u30f3\u30c6\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3 (CI) \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3001\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u3001\u307e\u305f\u306f\u30db\u30b9\u30c8\u30b7\u30b9\u30c6\u30e0\u304c\u30012.14.1\u307e\u305f\u306f\u305d\u308c\u3088\u308a\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u8106\u5f31\u306aLog4j\u30d1\u30c3\u30b1\u30fc\u30b8\u307e\u305f\u306fJAR\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u3002<span style=\"font-weight: 400;\">\u3053\u306e\u307b\u304b\u3001Web Application and API Security (WAAS) \u30eb\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u691c\u51fa\u30fb\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306f\u3001Prisma Cloud\u306e<\/span><a href=\"https:\/\/www.paloaltonetworks.com\/blog\/prisma-cloud\/log-4-shell-vulnerability\/?lang=ja\"><span style=\"font-weight: 400;\">Log4Shell \u7de9\u548c\u7b56\u306b\u95a2\u3059\u308b\u30d6\u30ed\u30b0<\/span><\/a><span style=\"font-weight: 400;\">\u304b\u3089\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/span><\/li>\n<\/ul>\n<p>Snort\u3084Suricata\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306b\u5411\u3051\u3066\u4ee5\u4e0b\u306e\u30eb\u30fc\u30eb\u304c<a href=\"https:\/\/rules.emergingthreatspro.com\/open\/\">\u30ea\u30ea\u30fc\u30b9<\/a>\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>2034647<\/li>\n<li>2034648<\/li>\n<li>2034648<\/li>\n<li>2034649<\/li>\n<li>2034650<\/li>\n<li>2034651<\/li>\n<li>2034652<\/li>\n<\/ul>\n<p>Apache log4j\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u304a\u4f7f\u3044\u306e\u304a\u5ba2\u69d8\u306f\u3001<a href=\"https:\/\/logging.apache.org\/log4j\/2.x\/download.html\">\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3<\/a>\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u6700\u521d\u306e\u30d1\u30c3\u30c1 2.15.0-rc1 \u306f\u30d0\u30a4\u30d1\u30b9\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u3053\u306e\u8106\u5f31\u6027\u306b\u5bfe\u3057\u3066\u3067\u304d\u308b\u9650\u308a\u306e\u4fdd\u8b77\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u7de9\u548c\u7b56\u3082\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u304c\u4fdd\u8b77\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u306eLDAP\u3084RMI\u306a\u3069\u306e\u4e0d\u5be9\u306a\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u7121\u52b9\u306b\u3059\u308b\u3002<\/li>\n<li>JNDI Lookup\u3092\u7121\u52b9\u306b\u3059\u308b\u3002\n<ul>\n<li><span style=\"font-weight: 400;\"><span style=\"font-family: 'courier new', courier, monospace;\">log4j2.formatMsgNoLookups=true<\/span>\u306b\u8a2d\u5b9a\u3059\u308b\u3002<\/span><\/li>\n<li><span style=\"font-weight: 400;\">log4j-core\u306eJndiLookup\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3057\u3066\u30b5\u30fc\u30d3\u30b9\u3092\u518d\u8d77\u52d5\u3059\u308b\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">JNDI\u306e\u7121\u52b9\u5316<\/span>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"><span style=\"font-family: 'courier new', courier, monospace;\">spring.jndi.ignore=true<\/span>\u306b\u8a2d\u5b9a\u3059\u308b\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306f\u5f15\u304d\u7d9a\u304d\u72b6\u6cc1\u3092\u76e3\u8996\u3057\u3001\u65b0\u305f\u306a\u767a\u898b\u3084\u60c5\u5831\u304c\u3042\u308c\u3070\u3053\u306e\u6587\u66f8\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002\u4fb5\u5bb3\u306e\u61f8\u5ff5\u304c\u3042\u308a\u5f0a\u793eUnit 42\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ec\u30b9\u30dd\u30f3\u30b9\u30c1\u30fc\u30e0\u306b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u95a2\u3059\u308b\u3054\u76f8\u8ac7\u3092\u306a\u3055\u308a\u305f\u3044\u5834\u5408\u306f\u3001<a href=\"mailto:infojapan@paloaltonetworks.com\">infojapan@paloaltonetworks.com<\/a>\u307e\u3067\u96fb\u5b50\u30e1\u30fc\u30eb\u306b\u3066\u3054\u9023\u7d61\u3044\u305f\u3060\u304f\u304b\u3001<span style=\"font-weight: 400;\">+81(50)1790-0200<\/span>\u307e\u3067\u304a\u96fb\u8a71\u306b\u3066\u3054\u9023\u7d61\u304f\u3060\u3055\u3044(\u3054\u76f8\u8ac7\u306f\u5f0a\u793e\u88fd\u54c1\u306e\u304a\u5ba2\u69d8\u306b\u306f\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093)\u3002<\/p>\n<h3 id=\"additional-resources\"><strong>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/strong><\/h3>\n<p><a href=\"https:\/\/www.paloaltonetworks.com\/log4shell\">Log4j \u30ea\u30bd\u30fc\u30b9\u30bb\u30f3\u30bf\u30fc<\/a><br \/>\n<a href=\"https:\/\/register.paloaltonetworks.com\/apachelog4jdec23\">Apache Log4j Threat Update Briefing (\u30aa\u30f3\u30c7\u30de\u30f3\u30c9)<\/a><br \/>\n<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/security-operations\/hunting-for-log4j-cve-2021-44228-log4shell-exploit-activity\/?lang=ja\">Log4j\u306e\u8106\u5f31\u6027\u300cCVE-2021-44228 (Log4Shell)\u300d\u306b\u5bfe\u3059\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u6d3b\u52d5\u306e\u8105\u5a01\u30cf\u30f3\u30c6\u30a3\u30f3\u30b0<\/a><br \/>\n<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/network-security\/apache-log4j-vulnerability-ngfw\/?lang=ja\">\u5f0a\u793eNGFW\u3068\u30af\u30e9\u30a6\u30c9\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9\u3067Apache Log4j\u306e\u8106\u5f31\u6027\u306b\u5bfe\u5fdc\u3059\u308b\u65b9\u6cd5\u306e\u307e\u3068\u3081<\/a><br \/>\n<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/security-operations\/how-cortex-xdr-blocks-log4shell-exploits-with-java-deserialization-exploit-protection\/\">How Cortex XDR Blocks Log4Shell Exploits with Java Deserialization Exploit Protection<\/a><br \/>\n<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/security-operations\/shining-a-light-on-log4j-exploit-payloads\/\">Shining a Light on Log4j Exploit Payloads<\/a><\/p>\n<h3><a id=\"acknowledgements\"><\/a><strong>\u8b1d\u8f9e<\/strong><\/h3>\n<p>\u672c\u7a3f\u3068\u305d\u306e\u8abf\u67fb\u306b\u3054\u5354\u529b\u3044\u305f\u3060\u3044\u305fJen Miller-Osborn\u6c0f\u3001Laura Novak\u6c0f\u3001Joseph Opacki\u6c0f\u306b\u611f\u8b1d\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<p><em>2021-12-13 10:14 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670812\u65e5 11:50 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-13 14:56 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670812\u65e5 20:45 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-14 08:51 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670813\u65e5 14:15 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-15 09:40 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670814\u65e5 15:45 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-16 11:15 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670815\u65e5 09:53 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-16 08:27 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670816\u65e5 08:47 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-20 21:30 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670818\u65e5 07:45 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-21 22:00 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670820\u65e5 09:00 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-27 15:25 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670823\u65e5 10:35 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-29 18:10 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670828\u65e5 12:15 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2021-12-31 20:30 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2021\u5e7412\u670830\u65e5 09:25 PST \u306e\u5185\u5bb9\u3092\u53cd\u6620<br \/>\n2022-05-26 11:30 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2022\u5e7403\u670831\u65e5 10:00 PDT \u306e\u5185\u5bb9\u3092\u53cd\u6620 \u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 2021\u5e7412\u67089\u65e5\u3001Apache Log4j 2\u306b\u5b58\u5728\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c (RCE) \u306e\u8106\u5f31\u6027\u304c\u3059\u3067\u306b\u5b9f\u969b\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002\u516c\u958b\u3055\u308c\u305fPoC (proof of concept: \u6982\u5ff5\u5b9f\u8a3c<\/p>\n","protected":false},"author":57,"featured_media":134416,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4469,4428,4470],"tags":[5549,5819,5821,5603,5823,5605,5825,5673,4849,5719,5827,5828],"product_categories":[4442,4478,4479,4448,4451,4456,4457],"coauthors":[71,1348,2070,2479,933],"class_list":["post-121192","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vulnerabilities","category-threat-research-ja","category-vulnerabilities-ja","tag-apache-log4j-ja","tag-cve-2017-5645-ja","tag-cve-2019-17571-ja","tag-cve-2021-44228-ja","tag-cve-2021-44832-ja","tag-cve-2021-45046-ja","tag-cve-2021-45105-ja","tag-denial-of-service-ja","tag-exploit-ja","tag-log4j-ja","tag-log4j-2-ja","tag-rce","product_categories-advanced-threat-prevention-ja","product_categories-best-practice-assessment","product_categories-best-practice-assessment-ja","product_categories-cortex-xdr-ja","product_categories-cortex-xsoar-ja","product_categories-next-generation-firewall-ja","product_categories-prisma-access-ja"],"yoast_head":"<!-- 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\u8105\u5a01\u306b\u95a2\u3059\u308b\u60c5\u5831: Apache Log4j\u306b\u65b0\u305f\u306a\u8106\u5f31\u6027(CVE-2021-44228) \u5b9f\u969b\u306e\u60aa\u7528\u3082\u78ba\u8a8d\" \/>\n<meta property=\"og:description\" content=\"2021\u5e7412\u67089\u65e5\u3001Apachelog4j 2\u306b\u5b58\u5728\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\uff08RCE\uff09\u306e\u8106\u5f31\u6027\u304c\u3059\u3067\u306b\u5b9f\u969b\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002\u516c\u958b\u3055\u308c\u305fPoC\uff08proof of concept: \u6982\u5ff5\u5b9f\u8a3c\uff09\u30b3\u30fc\u30c9\u306f\u3001\u305d\u306e\u5f8c\u306e\u8abf\u67fb\u3067\u3001\u9a5a\u304f\u307b\u3069\u7c21\u5358\u306b\u60aa\u7528\u3067\u304d\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002\u3059\u3079\u3066\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001Apache log4j 2\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\uff082.15.0-rc2\uff09\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3053\u3068\u3092\u5f37\u304f\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unit42.paloaltonetworks.com\/ja\/apache-log4j-vulnerability-cve-2021-44228\/\" \/>\n<meta property=\"og:site_name\" content=\"Unit 42\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-11T06:05:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-26T02:12:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/05_Vulnerabilities_1920x900.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tao Yan, Qi Deng, Haozhe Zhang, Yu Fu, Josh Grunzweig\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"[2022-03-31 10:00 PDT\u66f4\u65b0] \u8105\u5a01\u306b\u95a2\u3059\u308b\u60c5\u5831: Apache Log4j\u306b\u65b0\u305f\u306a\u8106\u5f31\u6027(CVE-2021-44228) \u5b9f\u969b\u306e\u60aa\u7528\u3082\u78ba\u8a8d","description":"2021\u5e7412\u67089\u65e5\u3001Apachelog4j 2\u306b\u5b58\u5728\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\uff08RCE\uff09\u306e\u8106\u5f31\u6027\u304c\u3059\u3067\u306b\u5b9f\u969b\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002\u516c\u958b\u3055\u308c\u305fPoC\uff08proof of concept: 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Log4j\u306b\u65b0\u305f\u306a\u8106\u5f31\u6027(CVE-2021-44228) \u5b9f\u969b\u306e\u60aa\u7528\u3082\u78ba\u8a8d","og_description":"2021\u5e7412\u67089\u65e5\u3001Apachelog4j 2\u306b\u5b58\u5728\u3059\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\uff08RCE\uff09\u306e\u8106\u5f31\u6027\u304c\u3059\u3067\u306b\u5b9f\u969b\u306b\u60aa\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002\u516c\u958b\u3055\u308c\u305fPoC\uff08proof of concept: \u6982\u5ff5\u5b9f\u8a3c\uff09\u30b3\u30fc\u30c9\u306f\u3001\u305d\u306e\u5f8c\u306e\u8abf\u67fb\u3067\u3001\u9a5a\u304f\u307b\u3069\u7c21\u5358\u306b\u60aa\u7528\u3067\u304d\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002\u3059\u3079\u3066\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001Apache log4j 2\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\uff082.15.0-rc2\uff09\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3053\u3068\u3092\u5f37\u304f\u304a\u52e7\u3081\u3057\u307e\u3059\u3002","og_url":"https:\/\/unit42.paloaltonetworks.com\/ja\/apache-log4j-vulnerability-cve-2021-44228\/","og_site_name":"Unit 42","article_published_time":"2021-12-11T06:05:50+00:00","article_modified_time":"2022-05-26T02:12:38+00:00","og_image":[{"width":1920,"height":900,"url":"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/05_Vulnerabilities_1920x900.jpg","type":"image\/jpeg"}],"author":"Tao Yan, Qi Deng, Haozhe Zhang, Yu Fu, Josh 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2","RCE"],"articleSection":["Vulnerabilities","\u8105\u5a01\u30ea\u30b5\u30fc\u30c1","\u8106\u5f31\u6027"],"inLanguage":"ja","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/unit42.paloaltonetworks.com\/ja\/apache-log4j-vulnerability-cve-2021-44228\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/unit42.paloaltonetworks.com\/ja\/apache-log4j-vulnerability-cve-2021-44228\/","url":"https:\/\/unit42.paloaltonetworks.com\/ja\/apache-log4j-vulnerability-cve-2021-44228\/","name":"[2022-03-31 10:00 PDT\u66f4\u65b0] \u8105\u5a01\u306b\u95a2\u3059\u308b\u60c5\u5831: Apache Log4j\u306b\u65b0\u305f\u306a\u8106\u5f31\u6027(CVE-2021-44228) 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