{"id":122289,"date":"2022-03-08T06:00:49","date_gmt":"2022-03-08T14:00:49","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=122289"},"modified":"2022-03-08T18:05:28","modified_gmt":"2022-03-09T02:05:28","slug":"gke-autopilot-vulnerabilities","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/gke-autopilot-vulnerabilities\/","title":{"rendered":"\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u304b\u3089\u300c\u5f71\u306e\u7ba1\u7406\u8005\u300d\u3078: GKE Autopilot\u306e\u8106\u5f31\u6027"},"content":{"rendered":"<h2><strong>\u6982\u8981<\/strong><\/h2>\n<p>2021\u5e742\u6708\u3001Google\u306f<a href=\"https:\/\/cloud.google.com\/kubernetes-engine\">Google Kubernetes Engine<\/a>(GKE)\u306e\u65b0\u3057\u3044\u904b\u7528\u30e2\u30fc\u30c9\u3067\u3042\u308b<a href=\"https:\/\/cloud.google.com\/blog\/products\/containers-kubernetes\/introducing-gke-autopilot\">Autopilot<\/a>\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002Autopilot\u3067\u306f\u3001Google\u304cKubernetes\u306e\u300c\u30cf\u30f3\u30ba\u30aa\u30d5\u300d\u4f53\u9a13\u3092\u63d0\u4f9b\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u4ee3\u308f\u3063\u3066\u30af\u30e9\u30b9\u30bf\u30fc\u30a4\u30f3\u30d5\u30e9\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002\u3053\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u3001\u30ea\u30bd\u30fc\u30b9\u306e\u6d88\u8cbb\u91cf\u306b\u5fdc\u3058\u3066\u81ea\u52d5\u7684\u306b\u30ce\u30fc\u30c9\u306e\u30d7\u30ed\u30d3\u30b8\u30e7\u30cb\u30f3\u30b0\u3068\u524a\u9664\u3092\u884c\u3044\u3001\u4f55\u3082\u3057\u306a\u304f\u3066\u3082\u5b89\u5168\u306aKubernetes\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>2021\u5e746\u6708\u306bUnit 42\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306f\u3001GKE Autopilot\u306b\u304a\u3051\u308b\u8907\u6570\u306e\u8106\u5f31\u6027\u3068\u653b\u6483\u624b\u6cd5\u3092Google\u306b\u958b\u793a\u3057\u307e\u3057\u305f\u3002Pod\u3092\u4f5c\u6210\u3067\u304d\u308b\u30e6\u30fc\u30b6\u304c\u3053\u308c\u3089\u3092\u60aa\u7528\u3059\u308b\u3068\u3001(1)\u81ea\u5206\u306ePod\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u3066\u57fa\u76e4\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3\u3059\u308b\u3001(2) \u7279\u6a29\u3092\u6607\u683c\u3057\u3066\u5b8c\u5168\u306a\u30af\u30e9\u30b9\u30bf\u7ba1\u7406\u8005\u3068\u306a\u308b\u3001(3)\u30af\u30e9\u30b9\u30bf\u306e\u30aa\u30da\u30ec\u30fc\u30bf\u306b\u306f\u307e\u3063\u305f\u304f\u898b\u3048\u306a\u3044\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u901a\u3058\u3066\u7ba1\u7406\u8005\u6a29\u9650\u306e\u30a2\u30af\u30bb\u30b9\u3092\u3072\u305d\u304b\u306b\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3057\u305f\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u958b\u767a\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u4fb5\u5bb3\u3067Autopilot\u30af\u30e9\u30b9\u30bf\u3078\u306e\u8db3\u639b\u304b\u308a\u3092\u5f97\u305f\u653b\u6483\u8005\u3067\u3042\u308c\u3070\u3001\u3053\u308c\u3089\u306e\u554f\u984c\u3092\u60aa\u7528\u3057\u305f\u7279\u6a29\u6607\u683c\u306b\u3088\u3063\u3066\u300c\u5f71\u306e\u7ba1\u7406\u8005\u300d\u3068\u306a\u308a\u3001\u3072\u305d\u304b\u306bSecret\u306e\u6f0f\u51fa\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u3084\u30af\u30ea\u30d7\u30c8\u30de\u30a4\u30ca\u30fc\u306e\u914d\u7f6e\u3001\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u59a8\u5bb3\u3092\u884c\u3048\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306e\u60c5\u5831\u516c\u958b\u3092\u53d7\u3051Google\u306f\u5831\u544a\u3055\u308c\u305f\u554f\u984c\u3092\u4fee\u6b63\u3057\u3001GKE\u5168\u4f53\u306b\u30d1\u30c3\u30c1\u3092\u5c55\u958b\u3057\u307e\u3057\u305f\u3002\u73fe\u5728\u306f\u3059\u3079\u3066\u306eAutopilot\u30af\u30e9\u30b9\u30bf\u304c\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u672c\u7a3f\u306f\u3001\u3053\u308c\u3089\u306e\u554f\u984c\u306e\u6280\u8853\u5206\u6790\u3068\u3001Kubernetes\u30fbGKE\u74b0\u5883\u306b\u5bfe\u3059\u308b\u540c\u69d8\u306e\u653b\u6483\u9632\u6b62\u306b\u3080\u3051\u305f\u7de9\u548c\u7b56\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u554f\u984c\u306e\u6982\u8981\u306b\u3064\u3044\u3066\u306f\u3001\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u30d6\u30ed\u30b0\u300c<a href=\"https:\/\/www.paloaltonetworks.com\/blog\/2022\/03\/gke-autopilot-vulnerabilities\">Unit 42 Discloses Newly Discovered Vulnerabilities in GKE Autopilot (Unit 42\u304cGKE Autopilot\u306b\u65b0\u305f\u306b\u898b\u3064\u304b\u3063\u8106\u5f31\u6027\u3092\u958b\u793a)<\/a>\u300d\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\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\/prisma\/cloud\">Prisma Cloud<\/a>\u306eKubernetes\u30a2\u30c9\u30df\u30c3\u30b7\u30e7\u30f3\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u6a5f\u80fd\u3068\u76e3\u67fb\u6a5f\u80fd\u306b\u3088\u308a\u4ee5\u4e0b\u306b\u8aac\u660e\u3059\u308b\u554f\u984c\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table style=\"width: 101.459%;\">\n<tbody>\n<tr>\n<td style=\"width: 34.1513%;\"><span style=\"font-weight: 400;\">\u5f71\u97ff\u3092\u53d7\u3051\u308b\u88fd\u54c1<\/span><\/td>\n<td style=\"width: 252.147%;\"><span style=\"font-weight: 400;\">Google Kubernetes Engine (GKE) Autopilot<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 34.1513%;\"><span style=\"font-weight: 400;\">Unit 42\u306e\u95a2\u9023\u30c8\u30d4\u30c3\u30af<\/span><\/td>\n<td style=\"width: 252.147%;\"><a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/containers-ja\/\"><span style=\"font-weight: 400;\">Container Escape<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/unit42.paloaltonetworks.jp\/category\/cloud-ja\/\"><span style=\"font-weight: 400;\">Cloud<\/span><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong>\u76ee\u6b21<\/strong><\/h2>\n<p><a href=\"#Background-on-GKE-Autopilot\">GKE Autopilot\u306e\u80cc\u666f<\/a><br \/>\n<a href=\"#Attack-Surfaces-Unique-to-GKE-Autopilot\">GKE Autopilot\u7279\u6709\u306e\u653b\u6483\u5bfe\u8c61\u9818\u57df<\/a><br \/>\n<a href=\"#Masquerading-as-Allowlisted-Workloads-to-Compromise-Nodes\">\u8a31\u53ef\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3<\/a><br \/>\n<a href=\"#Impact-of-Node-Compromise\">\u30ce\u30fc\u30c9\u4fb5\u5bb3\u306b\u3088\u308b\u5f71\u97ff<\/a><br \/>\n<a href=\"#Escalating-to-Unrestricted-Administrators\">\u6a29\u9650\u7121\u5236\u9650\u306e\u7ba1\u7406\u8005\u3078\u306e\u6607\u683c<\/a><br \/>\n<a href=\"#Full-Chain-Invisible-Backdoors-via-Mutating-Admission-Webhooks\">\u653b\u6483\u30c1\u30a7\u30fc\u30f3\u306e\u5168\u4f53\u50cf: MutatingAdmissionWebhook\u306b\u3088\u308b\u898b\u3048\u306a\u3044\u30d0\u30c3\u30af\u30c9\u30a2<\/a><br \/>\n<a href=\"#Full-Chain-Impact\">\u5168\u653b\u6483\u30c1\u30a7\u30fc\u30f3\u306b\u3088\u308b\u5f71\u97ff<\/a><br \/>\n<a href=\"#Other-Issues\">\u305d\u306e\u4ed6\u306e\u554f\u984c<\/a><br \/>\n<a href=\"#Fixes-and-Mitigations\">\u4fee\u6b63\u3068\u7de9\u548c\u7b56<\/a><br \/>\n<a href=\"#Preventing-Similar-Attacks-on-Kubernetes-Environments\">Kubernetes\u74b0\u5883\u306b\u304a\u3051\u308b\u540c\u69d8\u306e\u653b\u6483\u9632\u6b62<\/a><br \/>\n<a href=\"#Conclusion\">\u7d50\u8ad6<\/a><br \/>\n<a href=\"#Additional-Resources\">\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/a><\/p>\n<h2><a id=\"Background-on-GKE-Autopilot\"><\/a><strong>GKE Autopilot\u306e\u80cc\u666f<\/strong><\/h2>\n<p>Autopilot\u306fGKE\u306e\u65b0\u3057\u3044\u904b\u7528\u30e2\u30fc\u30c9\u3067\u3001Google\u304c\u547c\u3076\u3068\u3053\u308d\u306e\u300c\u30cf\u30f3\u30ba\u30aa\u30d5\u300dKubernetes\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002GKE Standard\u3067\u306f\u30e6\u30fc\u30b6\u30fc\u81ea\u8eab\u304c\u30af\u30e9\u30b9\u30bf\u30a4\u30f3\u30d5\u30e9\u3092\u7ba1\u7406\u3057\u3001\u30ce\u30fc\u30c9\u5358\u4f4d\u3067\u6599\u91d1\u3092\u652f\u6255\u3044\u307e\u3059\u3002GKE Autopilot\u3067\u306f\u3001\u30af\u30e9\u30b9\u30bf\u306e\u30a4\u30f3\u30d5\u30e9\u306fGoogle\u304c\u7ba1\u7406\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u7a3c\u50cd\u3057\u3066\u3044\u308bPod\u306b\u5bfe\u3057\u3066\u306e\u307f\u6599\u91d1\u3092\u652f\u6255\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30e6\u30fc\u30b6\u30fc\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u96c6\u4e2d\u3057\u3001\u904b\u7528\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u8981\u3059\u308b\u306b\u30de\u30cd\u30fc\u30b8\u30c9 \u30af\u30e9\u30b9\u30bf \u30a4\u30f3\u30d5\u30e9\u3068\u306fGoogle\u304c\u6b21\u306e\u5f79\u5272\u3092\u81ea\u52d5\u3067\u884c\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>Pod\u306e\u30ea\u30bd\u30fc\u30b9\u6d88\u8cbb\u91cf\u306b\u5fdc\u3058\u3066\u30ce\u30fc\u30c9\u6570\u306e\u30d7\u30ed\u30d3\u30b8\u30e7\u30cb\u30f3\u30b0\u3084\u8abf\u6574\u3092\u884c\u3046<\/li>\n<li>\u30af\u30e9\u30b9\u30bf\u304c\u5b89\u5168\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9075\u5b88\u3057\u3001Google \u304c\u5b89\u5168\u306b\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306e\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u3092\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u3059\u308b<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u306f\u3001Autopilot\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u7c21\u7565\u5316\u3057\u305f\u56f3\u3067\u3059\u3002AutoPilot\u56fa\u6709\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u7dd1\u8272\u3067\u8868\u793a\u3057\u3001\u5148\u306e(1)\u3068(2)\u306e\u5f79\u5272\u306b\u5fdc\u3058\u3066\u756a\u53f7\u3092\u632f\u3063\u3066\u3044\u307e\u3059\u3002GKE Standard\u3067\u306f\u30ce\u30fc\u30c9\u304cCompute Engine\u306eVM\u3068\u3057\u3066\u898b\u3048\u308b\u306e\u306b\u5bfe\u3057\u3001Autopilot\u3067\u306f\u30ce\u30fc\u30c9\u304c\u5b8c\u5168\u306bGoogle\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u7dd1\u8272\u3067\u8868\u793a\u3057\u3066\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122301\" aria-describedby=\"caption-attachment-122301\" style=\"width: 842px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-15-ja.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-122301 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-15-ja.png\" alt=\"Autopilot\u306e\u7c21\u7565\u56f3\" width=\"842\" height=\"332\" \/><\/a><figcaption id=\"caption-attachment-122301\" class=\"wp-caption-text\">\u56f31 GKE Autopilot\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/figcaption><\/figure>\n<p>\u56f31\u306b\u3042\u308b\u3088\u3046\u306b2\u3064\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304cAutopilot\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u3057\u307e\u3059\u30021\u3064\u3081\u306f\u3001Kubernetes\u306e\u30dd\u30ea\u30b7\u30fc\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u306b\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u300c<a href=\"https:\/\/open-policy-agent.github.io\/gatekeeper\/website\/docs\/\">OPA Gatekeeper<\/a>\u300d\u3067\u3001\u3053\u308c\u304cAdmission Webhook\u3092\u691c\u8a3c\u3057\u307e\u3059\u30022\u3064\u3081\u306fGoogle\u304cKubernetes\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u6539\u5909\u3057\u3066\u5b9f\u88c5\u3057\u305fGKEAutopilot\u3068\u3044\u3046\u540d\u524d\u306e\u30d7\u30ed\u30d7\u30e9\u30a8\u30bf\u30ea\u306aKubernetes\u8a8d\u8a3c\u30e2\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u306b\u306f (a) Google\u304c\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u30bf\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8(\u30ce\u30fc\u30c9\u306a\u3069)\u306b\u30e6\u30fc\u30b6\u30fc\u304c\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306e\u3092\u9632\u3050\u3001(b) \u5b89\u5168\u306aKubernetes\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7dad\u6301\u3059\u308b\u3001\u3068\u3044\u30462\u3064\u306e<a href=\"https:\/\/cloud.google.com\/kubernetes-engine\/docs\/concepts\/autopilot-overview#limits\">\u76ee\u7684<\/a>\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070Autopilot\u306f\u7279\u6a29\u30b3\u30f3\u30c6\u30ca\u306e\u5b9f\u884c\u3092\u7981\u6b62\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u306b\u3088\u3063\u3066(a)\u3068(b)\u306e\u4e21\u65b9\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122249\" aria-describedby=\"caption-attachment-122249\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122250 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-16.png\" alt=\"GKE Autopilot\" width=\"900\" height=\"250\" \/><figcaption id=\"caption-attachment-122249\" class=\"wp-caption-text\">\u56f32 Autopilot\u306e\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u3067\u7279\u6a29\u30b3\u30f3\u30c6\u30ca\u3092\u9632\u6b62(Gatekeeper)<\/figcaption><\/figure>\n<p>Autopilot\u306e\u30dd\u30ea\u30b7\u30fc\u306f\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u306e\u9632\u6b62\u306b\u306f\u3068\u3069\u307e\u308a\u307e\u305b\u3093\u3002\u56f33\u3001\u56f34\u3001\u56f35\u3067\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u8208\u5473\u6df1\u3044\u4e8b\u4f8b\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u30dd\u30ea\u30b7\u30fc\u306b\u3088\u3063\u3066\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u3055\u308c\u308b\u3059\u3079\u3066\u306e\u5236\u9650\u306f<a href=\"https:\/\/cloud.google.com\/kubernetes-engine\/docs\/concepts\/autopilot-overview#limits\">GKE\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122251\" aria-describedby=\"caption-attachment-122251\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122252 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-17.png\" alt=\"GKE Autopilot\" width=\"900\" height=\"123\" \/><figcaption id=\"caption-attachment-122251\" class=\"wp-caption-text\">\u56f33 kube-system\u540d\u524d\u7a7a\u9593\u306f\u30de\u30cd\u30fc\u30b8\u30c9\u3067\u30e6\u30fc\u30b6\u30fc\u306f\u8aad\u307f\u53d6\u308a\u5c02\u7528\u30a2\u30af\u30bb\u30b9\u306b\u5236\u9650\u3055\u308c\u3066\u3044\u308b<\/figcaption><\/figure>\n<figure id=\"attachment_122253\" aria-describedby=\"caption-attachment-122253\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122254 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-18.png\" alt=\"GKE Autopilot\" width=\"900\" height=\"112\" \/><figcaption id=\"caption-attachment-122253\" class=\"wp-caption-text\">\u56f34. \u30e6\u30fc\u30b6\u30fc\u306fMutatingAdmissionWebhook\u306e\u4e00\u89a7\u8868\u793a\u3084\u4f5c\u6210\u3092\u884c\u3048\u306a\u3044<\/figcaption><\/figure>\n<figure id=\"attachment_122255\" aria-describedby=\"caption-attachment-122255\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122256 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-19.png\" alt=\"GKE Autopilot\" width=\"900\" height=\"327\" \/><figcaption id=\"caption-attachment-122255\" class=\"wp-caption-text\">\u56f35. CVE-2020-8554\u5bfe\u7b56\u3068\u3057\u3066\u5916\u90e8IP\u306e\u30b5\u30fc\u30d3\u30b9\u306f\u62d2\u5426\u3055\u308c\u308b<\/figcaption><\/figure>\n<p>\u4e0a\u56f3\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8aad\u3080\u3068\u3001\u56f32\u3068\u56f35\u306fGatekeeper\u304c\u3001\u56f33\u3068\u56f34\u306fGKEAutopilot\u306e\u8a8d\u8a3c\u30e2\u30fc\u30c9\u304c\u64cd\u4f5c\u3092\u9632\u6b62\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2><a id=\"Attack-Surfaces-Unique-to-GKE-Autopilot\"><\/a><strong>GKE Autopilot\u7279\u6709\u306e\u653b\u6483\u5bfe\u8c61\u9818\u57df<\/strong><\/h2>\n<p>Autopilot\u306e\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u306e\u304a\u304b\u3052\u3067\u3044\u304f\u3064\u304b\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u65b9\u6cd5\u306f\u4f55\u3082\u3057\u306a\u304f\u3066\u3082\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u306e\u3067\u3001\u6a19\u6e96\u306eKubernetes\u3084GKE Standard\u3068\u6bd4\u3079\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u614b\u52e2\u306f\u3088\u304f\u306a\u308a\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u305d\u3053\u306b\u306fAutopilot\u306a\u3089\u3067\u306f\u306e\u653b\u6483\u5bfe\u8c61\u9818\u57df\u3082\u751f\u307e\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u7ba1\u7406\u8005\u304c\u30ea\u30b9\u30af\u306e\u9ad8\u3044\u8a2d\u5b9a\u306e\u9632\u6b62\u306b\u3064\u3044\u3066Autopilot\u30dd\u30ea\u30b7\u30fc\u306b\u4f9d\u5b58\u3057\u3066\u3057\u307e\u3046\u3002\u653b\u6483\u8005\u304c\u4f55\u3089\u304b\u306e\u65b9\u6cd5\u3067\u3053\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u56de\u907f\u3067\u304d\u308c\u3070\u3001\u305f\u3068\u3048\u3070\u7279\u6a29\u4ed8\u304d\u30b3\u30f3\u30c6\u30ca\u306e\u30c7\u30d7\u30ed\u30a4\u306a\u3069\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d6\u30ed\u30c3\u30af\u3092\u524d\u63d0\u3068\u3057\u3066\u3044\u308b\u65b9\u6cd5\u3067\u7279\u6a29\u3092\u6607\u683c\u3055\u308c\u3066\u3057\u307e\u3046\u3002<\/li>\n<li>Autopilot\u306e\u7ba1\u7406\u8005\u306f\u5b8c\u5168\u306a\u7279\u6a29\u306f\u3082\u3063\u3066\u304a\u3089\u305a\u3001\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u306b\u3088\u3063\u3066\u30ce\u30fc\u30c9\u3084\u7279\u5b9a\u306e\u7279\u6a29\u4ed8\u304dKubernetes API\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u5236\u9650\u3055\u308c\u3066\u3044\u308b\u3002\u653b\u6483\u8005\u304cAutopilot\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u56de\u907f\u3067\u304d\u308c\u3070\u3001\u7ba1\u7406\u8005\u3088\u308a\u9ad8\u3044\u6a29\u9650\u3092\u5f97\u3089\u308c\u3001\u898b\u3048\u306a\u3044\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u958b\u304b\u305b\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u653b\u6483\u5bfe\u8c61\u9818\u57df\u306b\u8a72\u5f53\u3059\u308b\u8106\u5f31\u6027\u3001\u6a29\u9650\u6607\u683c\u30c6\u30af\u30cb\u30c3\u30af\u3001\u304a\u3088\u3073\u78ba\u8a8d\u3057\u305f\u6c38\u7d9a\u5316\u624b\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u3064\u306a\u304e\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001Pod\u3092\u4f5c\u6210\u3067\u304d\u308b\u5236\u9650\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u304c\u3001(1)\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3\u3059\u308b\u3053\u3068\u3001(2)\u7279\u6a29\u6607\u683c\u3057\u3066\u6a29\u9650\u7121\u5236\u9650\u306e\u30af\u30e9\u30b9\u30bf\u7ba1\u7406\u8005\u306b\u306a\u308b\u3053\u3068\u3001(3)\u30af\u30e9\u30b9\u30bf\u306b\u4e0d\u53ef\u8996\u3067\u6c38\u7d9a\u7684\u306a\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u8a2d\u7f6e\u3059\u308b\u3053\u3068\u3001\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2><a id=\"Masquerading-as-Allowlisted-Workloads-to-Compromise-Nodes\"><\/a><strong>\u8a31\u53ef\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3<\/strong><\/h2>\n<p>\u79c1\u305f\u3061\u306e\u8abf\u67fb\u306f\u3001Autopilot\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3042\u308b<a href=\"https:\/\/cloud.google.com\/kubernetes-engine\/docs\/concepts\/autopilot-overview#:~:text=Our%20intent%20is%20to%20prevent%20unintended%20access%20to%20the%20node%20virtual%20machine.%20We%20accept%20submissions%20to%20that%20effect%20through%20the%20Google%20Vulnerability%20Reward%20Program%20(VRP)\">\u6b21\u306e\u30d1\u30e9\u30b0\u30e9\u30d5<\/a>\u304b\u3089\u59cb\u307e\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u300cGoogle \u306e\u76ee\u7684\u306f\u3001\u30ce\u30fc\u30c9\u4eee\u60f3\u30de\u30b7\u30f3\u306e\u610f\u56f3\u3057\u306a\u3044\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u3053\u3068\u3067\u3059\u3002Google \u3067\u306f\u3001\u8106\u5f31\u6027\u5831\u5968\u91d1\u30d7\u30ed\u30b0\u30e9\u30e0(VRP)\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u52b9\u679c\u306b\u95a2\u3059\u308b\u5831\u544a\u3092\u53d7\u3051\u4ed8\u3051\u3066\u3044\u307e\u3059\u300d<\/p>\n<p>\u3053\u308c\u306f\u9762\u767d\u3044\u30c1\u30e3\u30ec\u30f3\u30b8\u3060\u3068\u601d\u3044\u3001Autopilot\u306e\u30af\u30e9\u30b9\u30bf\u3092\u4f5c\u3063\u3066\u3001\u3044\u308d\u3044\u308d\u3068\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002Autopilot\u306fOPA Gatekeeper\u3092\u30af\u30e9\u30b9\u30bf\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3001\u7279\u6a29\u30b3\u30f3\u30c6\u30ca\u306a\u3069\u306e\u9ad8\u30ea\u30b9\u30af\u69cb\u6210\u3092\u9632\u6b62\u3059\u308b\u30dd\u30ea\u30b7\u30fc(Gatekeeper\u7528\u8a9e\u3067\u306f\u300c\u5236\u7d04(constraints)\u300d\u3068\u547c\u3070\u308c\u308b)\u3092\u8907\u6570\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3053\u306e\u30af\u30e9\u30b9\u30bf\u306b\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">allowlistedworkloads<\/span>\u3068\u3044\u3046\u540d\u524d\u306e\u8208\u5473\u6df1\u3044CRD(<a href=\"https:\/\/kubernetes.io\/ja\/docs\/concepts\/extend-kubernetes\/api-extension\/custom-resources\/\">\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\u5b9a\u7fa9<\/a>)\u3082\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<figure id=\"attachment_122257\" aria-describedby=\"caption-attachment-122257\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122258 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-20.png\" alt=\"GKE Autopilot\u306e\u8106\u5f31\u6027\u3092\u63a2\u3059\u306a\u304b\u3067Autopilot\u306f\u3053\u306e\u56f3\u306e\u3088\u3046\u306aallowlistedworkloads\u3068\u3044\u3046\u540d\u524d\u306eCRD\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u304c\u5224\u660e \" width=\"900\" height=\"95\" \/><figcaption id=\"caption-attachment-122257\" class=\"wp-caption-text\">\u56f36 Autopilot\u306fallowlistedworkloads\u3068\u3044\u3046\u540d\u524d\u306e\u30ab\u30b9\u30bf\u30e0\u30ea\u30bd\u30fc\u30b9\u5b9a\u7fa9 (CRD) \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/figcaption><\/figure>\n<p>\u56f32\u306b\u793a\u3057\u305f\u3088\u3046\u306b\u3001Autopilot\u306f\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u3092\u8a31\u3059\u3088\u3046\u306aPod\u306e\u69cb\u6210\u3092\u7981\u6b62\u3057\u3066\u3044\u307e\u3059\u3002\u3042\u308b\u7a0b\u5ea6\u306e\u30ce\u30fc\u30c9\u30a2\u30af\u30bb\u30b9\u3092\u5fc5\u8981\u3068\u3059\u308b\u30a2\u30c9\u30aa\u30f3\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u3001Autopilot\u306f\u8a31\u53ef\u30ea\u30b9\u30c8\u5316\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3068\u3044\u3046\u6982\u5ff5\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002\u3042\u308b\u30b3\u30f3\u30c6\u30ca\u304c\u8a31\u53ef\u30ea\u30b9\u30c8\u5316\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u30de\u30c3\u30c1\u3059\u308b\u5834\u5408\u3001<span style=\"font-family: 'courier new', courier, monospace;\">allowlistedworkload<\/span>\u306e\u8a2d\u5b9a\u3067\u6307\u5b9a\u3055\u308c\u305f\u7279\u6a29\u6a5f\u80fd\u306e\u4f7f\u7528\u304c\u8a31\u53ef\u3055\u308c\u307e\u3059\u30026\u6708\u306e\u6642\u70b9\u3067\u3053\u306e\u8a31\u53ef\u30ea\u30b9\u30c8\u306b\u8f09\u3063\u3066\u3044\u308b\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306fDatadog\u306e\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3060\u3051\u3067\u3057\u305f\u3002<\/p>\n<figure id=\"attachment_122259\" aria-describedby=\"caption-attachment-122259\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122260 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-21.png\" alt=\"6\u6708\u306e\u6642\u70b9\u3067\u3053\u306e\u8a31\u53ef\u30ea\u30b9\u30c8\u306b\u8f09\u3063\u3066\u3044\u308b\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306fDatadog\u306e\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3060\u3051\u3067\u3057\u305f\u3002\" width=\"900\" height=\"97\" \/><figcaption id=\"caption-attachment-122259\" class=\"wp-caption-text\">\u56f37 allowlistedworkload\u306b\u542b\u307e\u308c\u308bDatadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8<\/figcaption><\/figure>\n<p>\u4ee5\u4e0b\u306f\u3001\u79c1\u305f\u3061\u304c\u6ce8\u76ee\u3057\u305fDatadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306e1\u3064\u306b\u5bfe\u3059\u308b\u8a31\u53ef\u30ea\u30b9\u30c8\u5316\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u8a2d\u5b9a\u3067\u3059\u3002\u3042\u308b\u30b3\u30f3\u30c6\u30ca\u304c\u30ea\u30b9\u30c8\u306b\u3042\u308b\u30b3\u30de\u30f3\u30c9\u3084\u30a4\u30e1\u30fc\u30b8\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u30ea\u30b9\u30c8\u306b\u3042\u308b\u30db\u30b9\u30c8\u306e\u30d1\u30b9\u3092\u8aad\u307f\u53d6\u308a\u5c02\u7528\u30dc\u30ea\u30e5\u30fc\u30e0\u306b\u30de\u30a6\u30f3\u30c8\u3059\u308b\u3053\u3068\u304c\u8a31\u53ef\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122261\" aria-describedby=\"caption-attachment-122261\" style=\"width: 767px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122262 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-22.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001GKE Autopilot\u306e\u8106\u5f31\u6027\u3092\u63a2\u3059\u306a\u304b\u3067\u79c1\u305f\u3061\u306e\u76ee\u306b\u7559\u307e\u3063\u305fDatadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306e1\u3064\u306b\u5bfe\u3059\u308b\u8a31\u53ef\u30ea\u30b9\u30c8\u5316\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u8a2d\u5b9a\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"767\" height=\"381\" \/><figcaption id=\"caption-attachment-122261\" class=\"wp-caption-text\">\u56f38 Datadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u7528\u306eallowlistworkloadconfiguration\u306e\u4e00\u4f8b<\/figcaption><\/figure>\n<p>\u3053\u3053\u3067\u554f\u984c\u306b\u306a\u308b\u306e\u306f\u3001\u691c\u8a3c\u304c\u5341\u5206\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3067\u3059\u3002\u305f\u3060\u30b3\u30de\u30f3\u30c9\u3068\u30a4\u30e1\u30fc\u30b8\u3092\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3060\u3051\u3067\u306f\u3001\u30b3\u30f3\u30c6\u30ca\u304cDatadog\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u3068\u78ba\u8a8d\u3059\u308b\u306e\u306b\u4e0d\u5341\u5206\u3067\u3059\u3002\u4ee5\u4e0b\u306e<span style=\"font-family: 'courier new', courier, monospace;\">PodSpec<\/span>\u3092\u4f7f\u3048\u3070\u3001\u30b3\u30f3\u30c6\u30ca\u306fDatadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u653b\u6483\u8005\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3001\u7121\u9632\u5099\u306a\u30db\u30b9\u30c8\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u60aa\u7528\u3057\u3066\u30a8\u30b9\u30b1\u30fc\u30d7\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_122263\" aria-describedby=\"caption-attachment-122263\" style=\"width: 877px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122264 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-23.png\" alt=\"\u3053\u306e\u56f3\u306b\u793a\u3057\u305fPodSpec\u3092\u4f7f\u3048\u3070\u3001\u30b3\u30f3\u30c6\u30ca\u306fDatadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u653b\u6483\u8005\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3001\u7121\u9632\u5099\u306a\u30db\u30b9\u30c8\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u3092\u60aa\u7528\u3057\u3066\u30a8\u30b9\u30b1\u30fc\u30d7\u53ef\u80fd\" width=\"877\" height=\"531\" \/><figcaption id=\"caption-attachment-122263\" class=\"wp-caption-text\">\u56f39 Datadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306b\u306a\u308a\u3059\u307e\u3059<\/figcaption><\/figure>\n<p>\u4ee5\u4e0b\u306e\u30d3\u30c7\u30aa\u3067\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u3001Datadog\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3092\u88c5\u3063\u305fPod\u3092\u30c7\u30d7\u30ed\u30a4\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306ePod\u306f\u4ee5\u4e0b\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u5b9f\u884c\u3057\u3066\u57fa\u76e4\u30ce\u30fc\u30c9\u3092\u4e57\u3063\u53d6\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30de\u30a6\u30f3\u30c8\u3055\u308c\u305fcontainerd\u30bd\u30b1\u30c3\u30c8\u3092\u60aa\u7528\u3057\u3066\u30db\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3092\u30de\u30a6\u30f3\u30c8\u3059\u308b\u7279\u6a29\u4ed8\u304d\u30b3\u30f3\u30c6\u30ca\u3092\u4f5c\u6210\u3059\u308b<\/li>\n<li>\u7279\u6a29\u3092\u6301\u3064\u30b3\u30f3\u30c6\u30ca\u306bsystemd\u30b5\u30fc\u30d3\u30b9\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u305b\u3001systemd\u30b5\u30fc\u30d3\u30b9\u306b\u30ce\u30fc\u30c9\u304b\u3089\u653b\u6483\u8005\u304c\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u30de\u30b7\u30f3\u3078\u306e\u30ea\u30d0\u30fc\u30b9\u30b7\u30a7\u30eb\u3092\u751f\u6210\u3055\u305b\u308b<\/li>\n<\/ol>\n<p><iframe width=\"560\" height=\"315\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"allowfullscreen\" frameborder=\"0\" loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/0cZJklJxTQk\" title=\"YouTube\u30d3\u30c7\u30aa\u30d7\u30ec\u30fc\u30e4\u30fc\"><\/iframe><\/p>\n<p><em>\u30d3\u30c7\u30aa1 allowlistedworkload\u306e\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u57fa\u76e4\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3<\/em><\/p>\n<h2><a id=\"Impact-of-Node-Compromise\"><\/a><strong>\u30ce\u30fc\u30c9\u4fb5\u5bb3\u306b\u3088\u308b\u5f71\u97ff<\/strong><\/h2>\n<p>Pod\u3092\u4f5c\u6210\u3067\u304d\u308b\u653b\u6483\u8005\u306f\u3001\u3053\u306e\u554f\u984c\u3092\u60aa\u7528\u3057\u3066\u3001\u60aa\u610f\u306e\u3042\u308b\u30b3\u30f3\u30c6\u30ca\u3092\u4f5c\u6210\u3057\u3001\u57fa\u76e4\u30ce\u30fc\u30c9\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u3066\u4e57\u3063\u53d6\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002Autopilot\u30e6\u30fc\u30b6\u30fc\u306f\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5074\u3067\u3053\u306e\u624b\u306e\u653b\u6483\u306f\u9632\u3050\u3082\u306e\u3068\u60f3\u5b9a\u3057\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u4e0d\u610f\u6253\u3061\u3092\u98df\u3089\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u30ce\u30fc\u30c9\u4fb5\u5bb3\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u653b\u6483\u30d9\u30af\u30c8\u30eb\u304c\u751f\u307e\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u653b\u6483\u8005\u306f\u96a3\u63a5\u3059\u308bPod\u3084\u305d\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8\u30c8\u30fc\u30af\u30f3\u3092\u305f\u3060\u3061\u306b\u5236\u5fa1\u53ef\u80fd\u306b\u306a\u308b\u3053\u3068\u304b\u3089\u7279\u6a29\u6607\u683c\u3084\u4ed6\u306e<a href=\"https:\/\/kubernetes.io\/ja\/docs\/concepts\/overview\/working-with-objects\/namespaces\/\">\u540d\u524d\u7a7a\u9593<\/a>\u306b\u4fb5\u5bb3\u3092\u5e83\u3052\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>\u653b\u6483\u8005\u306f\u305d\u306e\u30ce\u30fc\u30c9\u306e<a href=\"https:\/\/cloud.google.com\/compute\/docs\/metadata\/overview\">\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bf\u30c7\u30fc\u30bf \u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8<\/a>\u306b\u5bfe\u3057\u30a2\u30af\u30bb\u30b9\u30c8\u30fc\u30af\u30f3\u306b\u3064\u3044\u3066\u306e\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001\u3053\u306e\u30c8\u30fc\u30af\u30f3\u306f\u30e6\u30fc\u30b6\u30fc \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5185\u306e\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u3078\u306e\u8aad\u307f\u53d6\u308a\u30a2\u30af\u30bb\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<li>Autopilot\u7ba1\u7406\u8005\u306f\u30ce\u30fc\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u653b\u6483\u8005\u304c\u3053\u306e\u554f\u984c\u3092\u60aa\u7528\u3057\u3001\u30ce\u30fc\u30c9\u306b\u79d8\u5bc6\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u3084\u30af\u30ea\u30d7\u30c8\u30de\u30a4\u30ca\u30fc\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057Autopilot\u306f\u30ce\u30fc\u30c9\u306e\u30b9\u30b1\u30fc\u30eb\u3092\u81ea\u52d5\u7684\u306b\u884c\u3046\u306e\u3067\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u78ba\u5b9f\u306b\u6c38\u7d9a\u5316\u3055\u305b\u308b\u306e\u306f\u5bb9\u6613\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u653b\u6483\u8005\u306f\u3001\u57fa\u76e4Kubelet\u306e\u8a8d\u8a3c\u60c5\u5831(\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb)\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u307b\u307c\u3059\u3079\u3066\u306e\u30af\u30e9\u30b9\u30bf\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u898b\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u6700\u5f8c\u306b\u3001Autopilot\u306f\u5b9f\u884c\u3055\u308c\u3066\u3044\u308bPod\u5358\u4f4d\u3067\u8ab2\u91d1\u3059\u308b\u306e\u3067\u3001\u305a\u308b\u8ce2\u3044\u30e6\u30fc\u30b6\u30fc\u3067\u3042\u308c\u3070\u3053\u306e\u554f\u984c\u3092\u60aa\u7528\u3057\u3066\u4e00\u90e8\u306e\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3092\u30ce\u30fc\u30c9\u4e0a\u3067\u76f4\u63a5\u5b9f\u884c\u3055\u305b\u3001\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u3048\u305f\u3067\u3057\u3087\u3046\u3002\u305f\u3060\u3057\u79c1\u305f\u3061\u306f\u4e0d\u6b63\u306a\u65b9\u6cd5\u3092\u4f7f\u308f\u305a\u306b\u6599\u91d1\u3092\u524a\u6e1b\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<h2><a id=\"Escalating-to-Unrestricted-Administrators\"><\/a><strong>\u6a29\u9650\u7121\u5236\u9650\u306e\u7ba1\u7406\u8005\u3078\u306e\u6607\u683c <\/strong><\/h2>\n<p>\u79c1\u305f\u3061\u306f\u3001\u6c7a\u610f\u306e\u56fa\u3044\u4fb5\u5165\u8005\u3067\u3042\u308c\u3070\u53d6\u308b\u3067\u3042\u308d\u3046\u9053\u7b4b\u3092\u305f\u3069\u308a\u3001\u3053\u306e\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u3092\u30af\u30e9\u30b9\u30bf\u5168\u4f53\u306e\u4e57\u3063\u53d6\u308a\u306b\u62e1\u5927\u3059\u308b\u78ba\u5b9f\u306a\u65b9\u6cd5\u3092\u63a2\u3057\u307e\u3057\u305f\u3002\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3\u3059\u308b\u3053\u3068\u3067\u3001\u653b\u6483\u8005\u306f\u8fd1\u96a3\u306ePod\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8 \u30c8\u30fc\u30af\u30f3\u3092\u76d7\u307f\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u5f37\u529b\u306a\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u6301\u3064Pod\u3092\u30db\u30b9\u30c8\u3057\u3066\u3044\u308b\u30ce\u30fc\u30c9\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3059\u308b\u306e\u304c\u7406\u306b\u304b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3059\u308b\u306e\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u30c7\u30d7\u30ed\u30a4\u3057\u305fPod\u3067\u3082\u3088\u3044\u3057\u3001\u3088\u308a\u8208\u5473\u6df1\u304f\u3057\u305f\u3051\u308c\u3070\u5168Autopilot\u30af\u30e9\u30b9\u30bf\u306b\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u30c7\u30d7\u30ed\u30a4\u3055\u308c\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0Pod\u3067\u3082\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u3092\u8abf\u3079\u305f\u7d50\u679c\u3001\u79c1\u305f\u3061\u306f<strong>Autopilot\u304ckube-system\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5b8c\u5168\u306b\u9664\u5916\u3057\u3066\u3044\u308b<\/strong>\u3053\u3068\u306b\u6c17\u3065\u304d\u307e\u3057\u305f\u3002\u305d\u306e\u610f\u5473\u3067\u3001<span style=\"font-family: 'courier new', courier, monospace;\">kube-system<\/span> Pod\u304c\u6700\u3082\u8208\u5473\u6df1\u3044\u30bf\u30fc\u30b2\u30c3\u30c8\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u30dd\u30ea\u30b7\u30fc\u3092\u6c17\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u76d7\u3093\u3060\u30c8\u30fc\u30af\u30f3\u3092\u81ea\u7531\u306b\u4f7f\u3048\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_122265\" aria-describedby=\"caption-attachment-122265\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122266 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-24.png\" alt=\"\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u3092\u8abf\u3079\u305f\u7d50\u679c\u3001\u79c1\u305f\u3061\u306fAutopilot\u304ckube-system\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5b8c\u5168\u306b\u9664\u5916\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6c17\u3065\u304d\u307e\u3057\u305f\u3002\" width=\"900\" height=\"242\" \/><figcaption id=\"caption-attachment-122265\" class=\"wp-caption-text\">\u56f310. Autopilot\u306e\u30dd\u30ea\u30b7\u30fc\u3067\u306f3\u884c\u76ee\u3067kube-system\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u9664\u5916\u3055\u308c\u3066\u3044\u308b<\/figcaption><\/figure>\n<p>Autopilot\u5185\u306b\u3042\u308b\u5f37\u529b\u306aPod\u3092\u63a2\u3057\u3066\u3001\u79c1\u305f\u3061\u306f<span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/github.com\/twistlock\/sa-hunter\">sa-hunter<\/a><\/span>\u3068\u3044\u3046Pod\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3068Kubernetes\u306e\u6a29\u9650(roles\u3084clusterroles\u306a\u3069)\u306e\u5bfe\u5fdc\u4ed8\u3051\u3092\u884c\u3046Python\u30c4\u30fc\u30eb\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002\u65e2\u5b58\u306e\u30c4\u30fc\u30eb\u3067\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3068\u305d\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092\u95a2\u9023\u4ed8\u3051\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u7279\u5b9a\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f7f\u3063\u3066\u3044\u308bPod\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002\u56f311\u306b<span style=\"font-family: 'courier new', courier, monospace;\">sa-hunter<\/span>\u51fa\u529b\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122267\" aria-describedby=\"caption-attachment-122267\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122268 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-25.png\" alt=\"Autopilot\u3067\u5f37\u529b\u306aPod\u3092\u63a2\u3059sa-under\u306e\u51fa\u529b\u4f8b \" width=\"900\" height=\"631\" \/><figcaption id=\"caption-attachment-122267\" class=\"wp-caption-text\">\u56f311. sa-hunter \u306e\u51fa\u529b\u4f8b\u3002\u5b9f\u884c\u4e2d\u306ePod\u3092\u305d\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u7d10\u4ed8\u3051\u3066\u3044\u308b<\/figcaption><\/figure>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">sa-hunter<\/span>\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b2\u3064\u306e\u5f37\u529b\u306a<span style=\"font-family: 'courier new', courier, monospace;\">kube-system<\/span> Pod\u3001<span style=\"font-family: 'courier new', courier, monospace;\">stackdriver-metadata-agent-cluster-level<\/span>\u3068<span style=\"font-family: 'courier new', courier, monospace;\">metrics-server<\/span>\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002\u56f312\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u3069\u3061\u3089\u306ePod\u3082\u65e2\u5b58\u306e\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u3092\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u7279\u6a29\u306f\u4e00\u898b\u4f55\u306e\u554f\u984c\u3082\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u30af\u30e9\u30b9\u30bf\u306e\u5b8c\u5168\u306a\u7ba1\u7406\u8005\u306b\u6607\u683c\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u3082\u306e\u3067\u3059\u3002\u8208\u5473\u6df1\u3044\u3053\u3068\u306b\u3001\u3053\u308c\u3089\u306ePod\u306fGKE Standard\u3067\u3082\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u30c7\u30d7\u30ed\u30a4\u3055\u308c\u3066\u3044\u308b\u306e\u3067<strong>\u4ee5\u4e0b\u306e\u7279\u6a29\u6607\u683c\u30c6\u30af\u30cb\u30c3\u30af\u306f Standard\u3068Autopilot\u306e\u3059\u3079\u3066\u306eGKE\u30af\u30e9\u30b9\u30bf\u3067\u6709\u52b9<\/strong>\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122269\" aria-describedby=\"caption-attachment-122269\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122270 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-26.png\" alt=\"metrics-server Pod\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u7279\u6a29\u30ed\u30fc\u30eb\u306f\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u3092\u66f4\u65b0\u53ef\u80fd\" width=\"900\" height=\"374\" \/><figcaption id=\"caption-attachment-122269\" class=\"wp-caption-text\">\u56f312. metrics-server Pod\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u7279\u6a29\u30ed\u30fc\u30eb\u306f\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u3092\u66f4\u65b0\u53ef\u80fd<\/figcaption><\/figure>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">stackdriver-metadata-agent-cluster-level<\/span>\u307e\u305f\u306f<span style=\"font-family: 'courier new', courier, monospace;\">metrics-server<\/span> Pod\u3092\u30db\u30b9\u30c8\u3059\u308b\u30ce\u30fc\u30c9\u3092\u4e57\u3063\u53d6\u3063\u305f\u5f8c\u3001\u653b\u6483\u8005\u306f\u30ce\u30fc\u30c9\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8 \u30c8\u30fc\u30af\u30f3\u3092\u53ce\u7a6b\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30c8\u30fc\u30af\u30f3\u3092\u624b\u306b\u5165\u308c\u305f\u653b\u6483\u8005\u306f\u3001\u6b21\u306e3\u3064\u306e\u7c21\u5358\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u30af\u30e9\u30b9\u30bf\u306e\u3042\u3089\u3086\u308b\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u6a29\u9650\u3092\u596a\u53d6\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u65e2\u5b58\u306e\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u66f4\u65b0\u3059\u308b\u3002\u30d7\u30ea\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u306e\u3067\u3001\u305d\u306e\u3046\u3061\u306e\u3069\u308c\u304b\u3092\u3053\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u4f7f\u7528\u3059\u308c\u3070\u3088\u3044<\/li>\n<li>\u305d\u306e\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306b\u60aa\u610f\u306e\u3042\u308b\u30b3\u30f3\u30c6\u30ca\u3092\u8ffd\u52a0\u3059\u308b<\/li>\n<li>\u305d\u306e\u60aa\u610f\u306e\u3042\u308b\u30b3\u30f3\u30c6\u30ca\u3092\u4f7f\u3044\u3001\u30b3\u30f3\u30c6\u30ca\u5185\u3067<span style=\"font-family: 'courier new', courier, monospace;\">\/run\/secrets\/kubernetes.io\/serviceaccount\/token<\/span>\u306b\u30de\u30a6\u30f3\u30c8\u3055\u308c\u3066\u3044\u308b\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8 \u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<\/ol>\n<figure id=\"attachment_122271\" aria-describedby=\"caption-attachment-122271\" style=\"width: 418px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122272 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-27.png\" alt=\"\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306e\u66f4\u65b0\u6a29\u9650\u3092\u60aa\u7528\u3057\u3066\u4efb\u610f\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8 \u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\" width=\"418\" height=\"150\" \/><figcaption id=\"caption-attachment-122271\" class=\"wp-caption-text\">\u56f313. \u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306e\u66f4\u65b0\u6a29\u9650\u3092\u60aa\u7528\u3057\u3066\u4efb\u610f\u306e\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8 \u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97<\/figcaption><\/figure>\n<p>\u3053\u308c\u3092\u610f\u5473\u306e\u3042\u308b\u6a29\u9650\u6607\u683c\u306b\u3059\u308b\u306b\u306f\u3001\u653b\u6483\u8005\u306f\u5f37\u529b\u306a\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">kube-system<\/span>\u306e\u540d\u524d\u7a7a\u9593\u306b\u306f\u30d7\u30ea\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u975e\u5e38\u306b\u5f37\u529b\u306a\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u591a\u6570\u3042\u308b\u306e\u3067\u305d\u306e\u4e2d\u304b\u3089\u3069\u308c\u304b\u3092\u9078\u3079\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u3002\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u30bf\u30ed\u30fc\u30eb\u306b\u4efb\u610f\u306e\u6a29\u9650\u3092\u8ffd\u52a0\u3067\u304d\u308b<span style=\"font-family: 'courier new', courier, monospace;\">clusterrole-aggregation-controller<\/span> (<span style=\"font-family: 'courier new', courier, monospace;\">CRAC<\/span>)\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u6709\u529b\u5019\u88dc\u3068\u601d\u308f\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_122273\" aria-describedby=\"caption-attachment-122273\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122274 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-28.png\" alt=\"clusterrole-aggregation-controller\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u306f\u30af\u30e9\u30b9\u30bf\u30ed\u30fc\u30eb\u3092\u6607\u683c\u3067\u304d\u308b\" width=\"900\" height=\"318\" \/><figcaption id=\"caption-attachment-122273\" class=\"wp-caption-text\">\u56f314. clusterrole-aggregation-controller\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u306f\u30af\u30e9\u30b9\u30bf\u30ed\u30fc\u30eb\u3092\u6607\u683c\u3067\u304d\u308b<\/figcaption><\/figure>\n<p>\u56f313\u306b\u793a\u3057\u305f\u624b\u6cd5\u3067<span style=\"font-family: 'courier new', courier, monospace;\">CRAC<\/span>\u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u5f8c\u3001\u653b\u6483\u8005\u306f<span style=\"font-family: 'courier new', courier, monospace;\">CRAC<\/span>\u306b\u30d0\u30a4\u30f3\u30c9\u3055\u308c\u305f\u30af\u30e9\u30b9\u30bf\u30ed\u30fc\u30eb\u3092\u66f4\u65b0\u3057\u3066\u3059\u3079\u3066\u306e\u6a29\u9650\u3092\u7372\u5f97\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u6642\u70b9\u3067\u3001\u653b\u6483\u8005\u306f\u4e8b\u5b9f\u4e0a\u30af\u30e9\u30b9\u30bf\u7ba1\u7406\u8005\u3068\u306a\u308aAutopilot\u306e\u30dd\u30ea\u30b7\u30fc\u304b\u3089\u3082\u9664\u5916\u3055\u308c\u307e\u3059(\u56f310\u53c2\u7167)\u3002<\/p>\n<figure id=\"attachment_122303\" aria-describedby=\"caption-attachment-122303\" style=\"width: 568px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-29-ja.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-122303 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-29-ja.png\" alt=\"clusterrole-aggregation-controller\" width=\"568\" height=\"192\" \/><\/a><figcaption id=\"caption-attachment-122303\" class=\"wp-caption-text\">\u56f315. clusterrole-aggregation-controller\u306e\u30c8\u30fc\u30af\u30f3\u306f\u81ea\u5206\u81ea\u8eab\u306b\u7ba1\u7406\u8005\u6a29\u9650\u3092\u8ffd\u52a0\u53ef\u80fd<\/figcaption><\/figure>\n<p>\u8a71\u3092\u623b\u3059\u3068\u3001\u653b\u6483\u8005\u304c\u3053\u306e\u7279\u6a29\u6607\u683c\u30c6\u30af\u30cb\u30c3\u30af\u3092\u524d\u8ff0\u306e\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u3068\u9023\u52d5\u3055\u305b\u305f\u3044\u5834\u5408\u3001<span style=\"font-family: 'courier new', courier, monospace;\">stackdriver-metadata-agent-cluster\u30ec\u30d9\u30eb<\/span>\u307e\u305f\u306f<span style=\"font-family: 'courier new', courier, monospace;\">metrics-server<\/span> Pod\u3092\u30db\u30b9\u30c8\u3059\u308b\u30ce\u30fc\u30c9\u4e0a\u3067\u81ea\u5206\u306e\u30d6\u30ec\u30a4\u30af\u30a2\u30a6\u30c8\u7528Pod\u3092\u4f55\u3089\u304b\u306e\u65b9\u6cd5\u3067\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Autopilot\u306f<span style=\"font-family: 'courier new', courier, monospace;\">nodeSelector<\/span>\u3092\u6301\u3064Pod\u3092\u62d2\u5426\u3057\u307e\u3059\u304c\u3001\u6700\u3082\u5358\u7d14\u306a\u5f62\u5f0f\u306e\u30ce\u30fc\u30c9\u306e\u5272\u308a\u5f53\u3066\u3067\u3042\u308b <span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/kubernetes.io\/ja\/docs\/concepts\/scheduling-eviction\/assign-pod-node\/#nodename\">nodeName<\/a><\/span>\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u8a31\u53ef\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30bf\u30fc\u30b2\u30c3\u30c8\u30ce\u30fc\u30c9\u306b\u5225Pod\u306b\u5272\u304f\u30ea\u30bd\u30fc\u30b9\u304c\u5341\u5206\u3042\u308c\u3070\u3001<span style=\"font-family: 'courier new', courier, monospace;\">nodeName<\/span>\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4f7f\u3063\u3066\u30d6\u30ec\u30a4\u30af\u30a2\u30a6\u30c8Pod\u3092\u30bf\u30fc\u30b2\u30c3\u30c8 \u30ce\u30fc\u30c9\u306b\u78ba\u5b9f\u306b\u7740\u5730\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u30bf\u30fc\u30b2\u30c3\u30c8 \u30ce\u30fc\u30c9\u4e0a\u306b\u4f59\u88d5\u304c\u306a\u304f\u3066\u3082\u307e\u3060\u653b\u6483\u8005\u304c\u3068\u308c\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002(1)\u30bf\u30fc\u30b2\u30c3\u30c8\u30ce\u30fc\u30c9\u3092\u76e3\u8996\u3057\u3066Pod\u304c\u524a\u9664\u3055\u308c\u308b\u306e\u3092\u5f85\u3064\u3002\u307e\u305f\u306f\u3001(2) Pod\u3092\u4f5c\u6210\u3057\u3066\u30ce\u30fc\u30c9\u306e\u30b9\u30b1\u30fc\u30eb\u30a2\u30c3\u30d7\u3092\u8a98\u767a\u3057\u3001Autopilot\u306e\u30aa\u30fc\u30c8\u30b9\u30b1\u30fc\u30e9\u3092\u9a19\u3057\u3066\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3092\u518d\u5206\u914d\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u5f37\u529b\u306aPod\u304c\u30ea\u30bd\u30fc\u30b9\u306b\u4f59\u88d5\u306e\u3042\u308b\u30ce\u30fc\u30c9\u306b\u7f6e\u304b\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u306a\u3069\u3067\u3059\u3002<\/p>\n<h2><a id=\"Full-Chain-Invisible-Backdoors-via-Mutating-Admission-Webhooks\"><\/a><strong>\u653b\u6483\u30c1\u30a7\u30fc\u30f3\u306e\u5168\u4f53\u50cf: MutatingAdmissionWebhook\u306b\u3088\u308b\u898b\u3048\u306a\u3044\u30d0\u30c3\u30af\u30c9\u30a2<\/strong><\/h2>\n<p>\u30d3\u30c7\u30aa2\u306f\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u3068GKE\u306b\u7d44\u307f\u8fbc\u307e\u308c\u305f\u7279\u6a29\u6607\u683c\u30eb\u30fc\u30c8\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u653b\u6483\u30c1\u30a7\u30fc\u30f3\u306e\u5168\u4f53\u50cf\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u5f8c\u306f\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u304b\u3089\u9664\u5916\u3055\u308c\u308b\u305f\u3081\u3001\u653b\u6483\u8005\u306fAutopilot\u306e\u7ba1\u7406\u8005\u3088\u308a\u3082\u9ad8\u3044\u6a29\u9650\u3092\u6301\u3064\u3053\u3068\u306b\u306a\u308a\u307e\u3059(\u56f310\u53c2\u7167)\u3002<strong>\u3053\u306e\u30ec\u30d9\u30eb\u306e\u30a2\u30af\u30bb\u30b9\u6a29\u3092\u60aa\u7528\u3059\u308c\u3070<\/strong><a href=\"https:\/\/kubernetes.io\/docs\/reference\/access-authn-authz\/admission-controllers\/#mutatingadmissionwebhook\">MutatingAdmissionWebhook<\/a>\u306e\u5f62\u3067<strong>\u898b\u3048\u306a\u3044\u6c38\u7d9a\u7684\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb <\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>MutatingAdmissionWebhook\u306f\u3001Pod \u3084 Secret \u3092\u542b\u3080\u3001\u30af\u30e9\u30b9\u30bf\u3067\u4f5c\u6210\u307e\u305f\u306f\u66f4\u65b0\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d7\u4fe1\u3057\u307e\u3059\u3002\u6050\u308d\u3057\u3044\u3053\u3068\u306b\u3001Webhook\u306f\u53d7\u4fe1\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4efb\u610f\u306b\u5909\u66f4(Mutation)\u3067\u304d\u308b\u305f\u3081\u3001\u3053\u308c\u306f\u3068\u3066\u3064\u3082\u306a\u304f\u5f37\u529b\u306a\u30d0\u30c3\u30af\u30c9\u30a2\u3068\u306a\u308a\u307e\u3059\u3002\u56f34\u3067\u793a\u3057\u305f\u3088\u3046\u306b\u3001Autopilot\u306e\u7ba1\u7406\u8005\u306fMutatingAdmissionWebhook\u3092\u30ea\u30b9\u30c8\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u3053\u306e\u30d0\u30c3\u30af\u30c9\u30a2\u306f\u898b\u3048\u307e\u305b\u3093\u3002<\/p>\n<figure id=\"attachment_122305\" aria-describedby=\"caption-attachment-122305\" style=\"width: 425px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-30-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-122305 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-30-jp.png\" alt=\"\u653b\u6483\u8005\u304cGKE Autopilot\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u3001\u898b\u3048\u306a\u3044MutatingAdmissionWebhook\u3092\u4f7f\u3063\u3066\u5f71\u306e\u7ba1\u7406\u8005\u306b\u306a\u308b\u3053\u3068\u304c\u53ef\u80fd\u3060\u3063\u305f\u3002 \" width=\"425\" height=\"350\" \/><\/a><figcaption id=\"caption-attachment-122305\" class=\"wp-caption-text\">\u56f316. \u898b\u3048\u306a\u3044MutatingAdmissionWebhook\u3092\u4f7f\u3063\u3066\u5f71\u306e\u7ba1\u7406\u8005\u306b<\/figcaption><\/figure>\n<p><iframe width=\"560\" height=\"315\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"allowfullscreen\" frameborder=\"0\" loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/4Dddhk1QclY\" title=\"YouTube\u30d3\u30c7\u30aa\u30d7\u30ec\u30fc\u30e4\u30fc\"><\/iframe><\/p>\n<p><em>\u30d3\u30c7\u30aa 2 Pod\u4f5c\u6210\u3001\u6a29\u9650\u7121\u5236\u9650\u306e\u7ba1\u7406\u8005\u3001\u305d\u3057\u3066\u898b\u3048\u306a\u3044\u30d0\u30c3\u30af\u30c9\u30a2\u3078<\/em><\/p>\n<figure id=\"attachment_122279\" aria-describedby=\"caption-attachment-122279\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-122280 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/03\/word-image-31.png\" alt=\"\u5831\u544a\u3057\u305fGKE\u306e\u8106\u5f31\u6027\u3068\u653b\u6483\u624b\u6cd5\u3092\u60aa\u7528\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u60aa\u610f\u306e\u3042\u308bMutatingAdmissionWebhook\u306a\u304a\u3053\u306e\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u898b\u308b\u306b\u306f\u653b\u6483\u3067\u53d6\u5f97\u3057\u305f\u6a29\u9650\u7121\u5236\u9650\u306e\u7ba1\u7406\u8005\u30c8\u30fc\u30af\u30f3\u304c\u5fc5\u8981\" width=\"900\" height=\"148\" \/><figcaption id=\"caption-attachment-122279\" class=\"wp-caption-text\">\u56f317. \u5831\u544a\u3057\u305f\u554f\u984c\u3092\u60aa\u7528\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u60aa\u610f\u306e\u3042\u308bMutatingAdmissionWebhook\u3002\u306a\u304a\u3053\u306e\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u898b\u308b\u306b\u306f\u653b\u6483\u3067\u53d6\u5f97\u3057\u305f\u6a29\u9650\u7121\u5236\u9650\u306e\u7ba1\u7406\u8005\u30c8\u30fc\u30af\u30f3\u304c\u5fc5\u8981<\/figcaption><\/figure>\n<h2><a id=\"Full-Chain-Impact\"><\/a><strong>\u5168\u653b\u6483\u30c1\u30a7\u30fc\u30f3\u306b\u3088\u308b\u5f71\u97ff<\/strong><\/h2>\n<p>\u4fee\u6b63\u524d\u3067\u3042\u308c\u3070\u3001\u653b\u6483\u8005\u306f\u672c\u7a3f\u3067\u8ff0\u3079\u305f\u554f\u984c\u3092\u60aa\u7528\u3057\u3001\u4efb\u610f\u306eAutopilot\u30af\u30e9\u30b9\u30bf\u4e0a\u306e\u9650\u5b9a\u7684\u306a\u4fb5\u5bb3\u3092\u5b8c\u5168\u306a\u30af\u30e9\u30b9\u30bf\u4e57\u3063\u53d6\u308a\u306b\u5909\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002\u30e6\u30fc\u30b6\u30fc\u306b\u306f\u898b\u3048\u306a\u3044Webhook\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u653b\u6483\u8005\u306f\u7ba1\u7406\u8005\u6a29\u9650\u3092\u5bc6\u304b\u306b\u6c38\u7d9a\u5316\u3057\u3001\u4e8b\u5b9f\u4e0a\u300c\u5f71\u306e\u7ba1\u7406\u8005\u300d\u306b\u306a\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3046\u306a\u308c\u3070\u3072\u305d\u304b\u306bSecret\u306e\u6f0f\u51fa\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u3084\u30af\u30ea\u30d7\u30c8\u30de\u30a4\u30ca\u30fc\u306e\u914d\u7f6e\u3001\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u59a8\u5bb3\u3092\u884c\u3048\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2><a id=\"Other-Issues\"><\/a><strong>\u305d\u306e\u4ed6\u306e\u554f\u984c<\/strong><\/h2>\n<p>\u79c1\u305f\u3061\u306e\u8abf\u67fb\u3067\u306f\u3001\u30ce\u30fc\u30c9\u306e\u4fb5\u5bb3\u3092\u53ef\u80fd\u306b\u3059\u308b\u3001\u3088\u308a\u5f71\u97ff\u306e\u5c0f\u3055\u30442\u3064\u306e\u554f\u984c\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u30021\u3064\u3081\u306e\u554f\u984c\u306f\u3001Autopilot\u306e\u30dd\u30ea\u30b7\u30fc\u304b\u3089\u9664\u5916\u3055\u308c\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u540d\u524d\u7a7a\u9593\u306b\u3042\u308b2\u3064\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u540d\u3001<span style=\"font-family: 'courier new', courier, monospace;\">csi-attacher<\/span>\u3068<span style=\"font-family: 'courier new', courier, monospace;\">otelsvc<\/span>\u306b\u304b\u304b\u308f\u308b\u3082\u306e\u3067\u3059\u3002\u653b\u6483\u8005\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u540d\u524d\u7a7a\u9593\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3092\u7372\u5f97\u3059\u308c\u3070\u3001\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u3092\u56de\u907f\u3057\u3066\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u3067\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308c\u3070\u653b\u6483\u8005\u306f\u7279\u6a29\u4ed8\u304d\u306ePod\u3092\u4f5c\u6210\u3057\u3066\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3\u3057\u3001\u3053\u3053\u3067\u8aac\u660e\u3057\u305f\u7279\u6a29\u6607\u683c\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3063\u3066\u30af\u30e9\u30b9\u30bf\u5168\u4f53\u3092\u4e57\u3063\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>2\u3064\u3081\u306e\u554f\u984c\u306fLoad Balancer\u30b5\u30fc\u30d3\u30b9\u3092\u901a\u3058\u3066<a href=\"https:\/\/unit42.paloaltonetworks.jp\/cve-2020-8554\/\">CVE-2020-8554<\/a>\u3092\u60aa\u7528\u3057\u3001\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3057\u305f\u304c\u3001\u3053\u308c\u3092\u60aa\u7528\u3059\u308b\u306b\u306f\u7ba1\u7406\u8005\u6a29\u9650\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002\u3053\u3053\u3067\u306e\u653b\u6483\u30b7\u30ca\u30ea\u30aa\u306f\u3001\u3059\u3067\u306bAutopilot\u30af\u30e9\u30b9\u30bf\u3092\u4fb5\u5bb3\u6e08\u307f\u306e\u653b\u6483\u8005\u304c\u3001\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u3092\u56de\u907f\u3057\u3066\u79d8\u5bc6\u306e\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u78ba\u7acb\u3057\u3088\u3046\u3068\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<h2><a id=\"Fixes-and-Mitigations\"><\/a><strong>\u4fee\u6b63\u3068\u7de9\u548c\u7b56<\/strong><\/h2>\n<p>Google\u306f\u79c1\u305f\u3061\u306e\u52e7\u544a\u306b\u3057\u305f\u304c\u3044\u3001\u3053\u3053\u6570\u30f6\u6708\u306e\u3042\u3044\u3060\u306bGKE Autopilot\u306b\u591a\u6570\u306e\u4fee\u6b63\u3068\u7de9\u548c\u7b56\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u65bd\u7b56\u306f\u3053\u3053\u3067\u5831\u544a\u3057\u305f\u653b\u6483\u3092\u9632\u304e\u3001\u540c\u69d8\u306e\u60aa\u7528\u306b\u5bfe\u3057\u3066\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3092\u5f37\u5316\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<ol>\n<li>\u30af\u30e9\u30b9\u30bf\u7ba1\u7406\u8005\u306fMutatingAdmissionWebhook\u306e\u4e00\u89a7\u8868\u793a\u3084\u95b2\u89a7\u3001\u4f5c\u6210\u307e\u3067\u3092\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u898b\u3048\u306a\u3044\u30d0\u30c3\u30af\u30c9\u30a2\u3068\u3057\u3066\u306e\u60aa\u7528\u306f\u9632\u3052\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li>Google\u306f<span style=\"font-family: 'courier new', courier, monospace;\">allowlistedworkload<\/span>\u691c\u8a3c\u30d7\u30ed\u30bb\u30b9\u3092\u5f37\u5316\u3057\u307e\u3057\u305f\u3002<\/li>\n<li>\u30dd\u30ea\u30b7\u30fc\u306e\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u304cOPA Gatekeeper\u304b\u3089Google\u306e\u30dd\u30ea\u30b7\u30fc\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u306b\u79fb\u52d5\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u72ec\u81ea\u306eGatekeeper\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5c0e\u5165\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u3067\u30e6\u30fc\u30b6\u30fc\u306f\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u306b\u52a0\u3048\u3066\u72ec\u81ea\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u30a8\u30f3\u30d5\u30a9\u30fc\u30b9\u3067\u304d\u307e\u3059\u3002<span style=\"font-weight: 400;\">\u591a\u5c64\u9632\u5fa1\u3068\u3057\u3066\u307e\u305f\u5c06\u6765\u8d77\u3053\u308a\u3046\u308b\u554f\u984c\u3092\u7de9\u548c\u3059\u308b\u305f\u3081<\/span><span style=\"font-weight: 400;\">\u3001<\/span><span style=\"font-weight: 400;\">GKE Standard\u306b\u5bfe\u3057\u3066\u3067\u3042\u308c\u3070\u5c0e\u5165\u3059\u308b\u3067\u3042\u308d\u3046\u30dd\u30ea\u30b7\u30fc\u3068\u540c\u3058\u30dd\u30ea\u30b7\u30fc\u3092\u5c0e\u5165\u3055\u308c\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/span><\/li>\n<li>\u30d3\u30eb\u30c8\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc\u306f\u8868\u793a\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">csi-attacher<\/span>\u3001<span style=\"font-family: 'courier new', courier, monospace;\">otelsvc<\/span>\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u306fAutopilot\u30dd\u30ea\u30b7\u30fc\u304b\u3089\u9664\u5916\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li>Google\u306f\u3001\u653b\u6483\u3067\u60aa\u7528\u3055\u308c\u305f\u5f37\u529b\u306a<span style=\"font-family: 'courier new', courier, monospace;\">kube-system<\/span> Pod\u3092\u5236\u9650\u3059\u308b<a href=\"https:\/\/github.com\/open-policy-agent\/gatekeeper-library\/tree\/master\/library\/general\/noupdateserviceaccount\">OPA Gatekeeper\u30dd\u30ea\u30b7\u30fc\u3092\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u5316<\/a>\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u30dd\u30ea\u30b7\u30fc\u306f\u3053\u308c\u3089\u306ePod\u304c\u65e2\u5b58\u306ePod\u306b\u65b0\u3057\u3044\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u8a73\u3057\u304f\u306f\u3001GKE\u306e<a href=\"https:\/\/cloud.google.com\/kubernetes-engine\/docs\/how-to\/hardening-your-cluster#restrict_self_modify\">\u30cf\u30fc\u30c9\u30cb\u30f3\u30b0\u30ac\u30a4\u30c9<\/a>\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n<p><a href=\"https:\/\/cloud.google.com\/anthos\/clusters\/docs\/security-bulletins#gcp-2022-009\">Google\u306e\u516c\u5f0f\u30a2\u30c9\u30d0\u30a4\u30b6\u30ea<\/a>\u306b\u306fGoogle\u304b\u3089\u898b\u305f\u554f\u984c\u70b9\u306e\u89e3\u8aac\u3068\u305d\u306e\u7de9\u548c\u7b56\u304c\u63b2\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u305c\u3072\u3054\u4e00\u8aad\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2><a id=\"Preventing-Similar-Attacks-on-Kubernetes-Environments\"><\/a><strong>Kubernetes\u74b0\u5883\u3078\u306e\u985e\u4f3c\u653b\u6483\u306e\u9632\u6b62<\/strong><\/h2>\n<p>\u4eca\u56de\u306e\u653b\u6483\u306fKubernetes\u306e\u7279\u6a29\u6607\u683c\u306b\u5206\u985e\u3055\u308c\u3046\u308b\u3082\u306e\u3067\u3001\u60aa\u7528\u3055\u308c\u305f\u5834\u5408\u3001\u9650\u3089\u308c\u305f\u30a2\u30af\u30bb\u30b9\u3057\u304b\u306a\u3044\u653b\u6483\u8005\u304c\u30af\u30e9\u30b9\u30bf\u4e0a\u3067\u3088\u308a\u5e83\u3044\u6a29\u9650\u3092\u7372\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u624b\u306e\u653b\u6483\u8005\u306b\u3088\u308b\u5f8c\u7d9a\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306f\u3001\u30af\u30e9\u30b9\u30bf\u306e\u30b5\u30d7\u30e9\u30a4\u30c1\u30a7\u30fc\u30f3\u306b\u3042\u308b\u60aa\u610f\u306e\u3042\u308b\u30a4\u30e1\u30fc\u30b8\u3084\u3001\u4e00\u822c\u306b\u516c\u958b\u3055\u308c\u305f\u8106\u5f31\u306a\u30b5\u30fc\u30d3\u30b9\u3001\u7a83\u53d6\u3055\u308c\u305f\u8a8d\u8a3c\u60c5\u5831(\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb)\u3001\u3042\u308b\u3044\u306f\u30a4\u30f3\u30b5\u30a4\u30c0\u30fc\u306b\u3088\u308b\u8105\u5a01\u306a\u3069\u306e\u6700\u521d\u306e\u4fb5\u5bb3\u304b\u3089\u59cb\u307e\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u304a\u4f7f\u3044\u306e\u30af\u30e9\u30b9\u30bf\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b5\u30d7\u30e9\u30a4\u30c1\u30a7\u30fc\u30f3\u3084\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u5916\u90e8\u5883\u754c\u3092\u4fdd\u8b77\u3059\u308b\u3053\u3068\u3067\u3001\u30af\u30e9\u30b9\u30bf\u5185\u3067\u3053\u306e\u3088\u3046\u306a\u4fb5\u5bb3\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u3092\u6e1b\u3089\u305b\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u3067\u3082\u5de7\u5999\u306a\u653b\u6483\u8005\u306f\u30af\u30e9\u30b9\u30bf\u306b\u4fb5\u5165\u3059\u308b\u305f\u3081\u306e\u5275\u9020\u7684\u306a\u65b9\u6cd5\u3092\u898b\u3064\u3051\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u30a2\u30af\u30bb\u30b9\u3092\u8a31\u53ef\u3059\u308bKubelet\u306e\u3088\u3046\u306a\u3001\u3042\u308a\u304c\u3061\u306a\u8a2d\u5b9a\u30df\u30b9\u3092\u7a4d\u6975\u7684\u306b\u89e3\u6c7a\u3057\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u4fb5\u5165\u8005\u304c\u5229\u7528\u3067\u304d\u308b\u5185\u90e8\u306b\u3042\u308b\u653b\u6483\u5bfe\u8c61\u9818\u57df\u3092\u5927\u5e45\u306b\u6e1b\u3089\u305b\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">NetworkPolicies<\/span>\u3084<span style=\"font-family: 'courier new', courier, monospace;\">PodSecurityStandards<\/span>\u306a\u3069\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u304c\u3042\u308c\u3070\u3001\u30a2\u30af\u30bf\u30fc\u3092\u3055\u3089\u306b\u5236\u9650\u3057\u3001\u58eb\u6c17\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u7d39\u4ecb\u3057\u305f\u653b\u6483\u30c1\u30a7\u30fc\u30f3\u306e\u5834\u5408\u3001\u653b\u6483\u8005\u304c1\u30ce\u30fc\u30c9\u3092\u4fb5\u5bb3\u3059\u308b\u3060\u3051\u3067\u30af\u30e9\u30b9\u30bf\u5168\u4f53\u306e\u4e57\u3063\u53d6\u308a\u306b\u6210\u529f\u3057\u307e\u3057\u305f\u3002\u6839\u672c\u7684\u306a\u554f\u984c\u306f\u30ce\u30fc\u30c9\u306e\u6a29\u9650\u3067\u306f\u306a\u304f\u3001\u305d\u306e\u30ce\u30fc\u30c9\u304c\u30db\u30b9\u30c8\u3057\u3066\u3044\u308b\u5f37\u529b\u306aPod\u306e\u6a29\u9650\u306b\u3042\u308a\u3001\u305d\u306e\u4e2d\u306b\u306f\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u3092\u66f4\u65b0\u3059\u308b\u6a29\u9650\u3082\u542b\u307e\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u306e\u6a29\u9650\u306f\u4e00\u898b\u306a\u3093\u3089\u304b\u306e\u5236\u9650\u3092\u53d7\u3051\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3001\u3058\u3064\u306f\u30af\u30e9\u30b9\u30bf\u7ba1\u7406\u8005\u3068\u540c\u7b49\u306e\u6a29\u9650\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u5f37\u529b\u306aPod\u306f\u672c\u756a\u30af\u30e9\u30b9\u30bf\u3067\u3082\u3088\u304f\u307f\u3089\u308c\u307e\u3059\u3002<\/strong>\u305d\u308c\u3089\u306f\u57fa\u76e4Kubernetes\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u3088\u308a\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u308a\u3001\u4eba\u6c17\u306e\u3042\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30a2\u30c9\u30aa\u30f3\u306b\u5c0e\u5165\u3055\u308c\u305f\u308a\u3057\u3066\u3044\u307e\u3059\u3002\u5f37\u529b\u306aPod\u3092\u30db\u30b9\u30c8\u3059\u308b\u30ce\u30fc\u30c9\u304c\u4fb5\u5bb3\u3055\u308c\u308b\u3068\u3001\u653b\u6483\u8005\u306f\u7c21\u5358\u306bPod\u306e\u5f37\u529b\u306a\u30b5\u30fc\u30d3\u30b9 \u30a2\u30ab\u30a6\u30f3\u30c8 \u30c8\u30fc\u30af\u30f3\u3092\u53d6\u5f97\u3057\u3001\u30af\u30e9\u30b9\u30bf\u5185\u3067\u4fb5\u5bb3\u3092\u5e83\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5f37\u529b\u306aPod\u306b\u5bfe\u51e6\u3059\u308b\u306e\u306f\u3084\u3063\u304b\u3044\u3067\u3059\u3002\u305d\u306e\u4e3b\u306a\u7406\u7531\u306f\u6b63\u5f53\u306a\u7406\u7531\u3067\u305d\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u304c\u5fc5\u8981\u3068\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u691c\u51fa\u3067\u3059\u3002\u30af\u30e9\u30b9\u30bf\u306b\u5f37\u529b\u306aPod\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/github.com\/twistlock\/sa-hunter\">sa-hunter<\/a><\/span>\u304c\u305d\u306e\u4e00\u52a9\u3068\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002\u306a\u304a\u3001\u5f37\u529b\u306aPod\u306e\u81ea\u52d5\u691c\u51fa\u306b\u7126\u70b9\u3092\u5f53\u3066\u305f\u8ffd\u52a0\u30c4\u30fc\u30eb\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u30af\u30e9\u30b9\u30bf\u5185\u3067\u5f37\u529b\u306aPod\u304c\u7279\u5b9a\u3055\u308c\u305f\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u306e\u65b9\u6cd5\u3092\u53d6\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5f37\u529b\u306aPod\u3092\u7ba1\u7406\u3059\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u304b\u3089\u4e0d\u8981\u306a\u6a29\u9650\u3092\u524a\u9664\u3057\u305f\u308a\u3001\u7279\u5b9a\u306e\u540d\u524d\u7a7a\u9593\u3084\u30ea\u30bd\u30fc\u30b9\u540d\u306b\u30b9\u30b3\u30fc\u30d7\u3092\u9650\u5b9a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u304b\u3069\u3046\u304b\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u3053\u308c\u3089\u306ePod\u304c\u5916\u90e8\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306e\u4e00\u90e8\u3067\u3042\u308b\u5834\u5408\u3001\u95a2\u9023\u3059\u308b\u30af\u30e9\u30a6\u30c9\u30d7\u30ed\u30d0\u30a4\u30c0\u307e\u305f\u306f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9023\u7d61\u3057\u3066Pod\u306e\u6a29\u9650\u3092\u524a\u6e1b\u3059\u308b\u3088\u3046\u6c42\u3081\u3066\u304f\u3060\u3055\u3044\u3002Pod\u304c\u30de\u30cd\u30fc\u30b8\u30c9Kubernetes\u30b5\u30fc\u30d3\u30b9\u3067\u30c7\u30d7\u30ed\u30a4\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306e\u30b5\u30fc\u30d3\u30b9\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb \u30d7\u30ec\u30fc\u30f3 \u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067\u7f6e\u304d\u63db\u3048\u53ef\u80fd\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>Kubernetes\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u306f\u5bdb\u5bb9\u3059\u304e\u308b\u3082\u306e\u304c\u3042\u308a\u3001\u5bfe\u8c61\u3068\u306a\u308bPod\u304c\u305d\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u9732\u51fa\u3059\u308b\u9ad8\u30ea\u30b9\u30af\u306a\u64cd\u4f5c\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u306fPod\u304c\u7279\u5b9a\u306e\u9ad8\u30ea\u30b9\u30af\u306a\u64cd\u4f5c\u3092\u5b9f\u884c\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u304b\u3001\u3088\u308a\u3088\u3044\u5bfe\u7b56\u3068\u3057\u3066\u3001\u8a31\u53ef\u30fb\u671f\u5f85\u3055\u308c\u308b\u7279\u5b9a\u64cd\u4f5c\u30bb\u30c3\u30c8\u306bPod\u3092\u5236\u9650\u3059\u308b\u30dd\u30ea\u30b7\u30fc\u3092(\u305f\u3068\u3048\u3070OPA Gatekeeper\u3092\u4ecb\u3057\u3066)\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/li>\n<li><a href=\"https:\/\/kubernetes.io\/ja\/docs\/concepts\/scheduling-eviction\/taint-and-toleration\/\">Taints<\/a>\u3001<a href=\"https:\/\/kubernetes.io\/ja\/docs\/concepts\/scheduling-eviction\/assign-pod-node\/#affinity-and-anti-affinity\">NodeAffinity<\/a>\u3001\u307e\u305f\u306f<a href=\"https:\/\/kubernetes.io\/ja\/docs\/concepts\/scheduling-eviction\/assign-pod-node\/#affinity-and-anti-affinity\">PodAntiAffinity<\/a>\u30eb\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3001\u4fe1\u983c\u3067\u304d\u306a\u3044Pod\u3084\u4e00\u822c\u516c\u958b\u3055\u308c\u3066\u3044\u308bPod\u304b\u3089\u5f37\u529b\u306aPod\u3092\u5206\u96e2\u3057\u3001\u305d\u308c\u3089\u304c\u540c\u3058\u30ce\u30fc\u30c9\u3067\u5b9f\u884c\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>3\u3064\u76ee\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u4f8b\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306eRego\u30dd\u30ea\u30b7\u30fc\u3067\u4eca\u56de\u7d39\u4ecb\u3057\u305f\u7279\u6a29\u6607\u683c\u653b\u6483\u3092\u963b\u6b62\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u653b\u6483\u306f\u3001\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u3092\u66f4\u65b0\u3067\u304d\u308b\u30b7\u30b9\u30c6\u30e0Pod\u3092\u60aa\u7528\u3057\u3001\u65e2\u5b58\u306e\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5f37\u529b\u306a\u3082\u306e\u306b\u7f6e\u304d\u63db\u3048\u308b\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u5f37\u529b\u306aPod\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u8abf\u3079\u3066\u307f\u308b\u3068\u3001\u66f4\u65b0\u5bfe\u8c61\u306e\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5909\u66f4\u3059\u308b\u6a5f\u80fd\u3092\u3082\u3063\u3066\u3044\u306a\u304f\u3066\u3082\u3088\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u4ee5\u4e0b\u306e\u30dd\u30ea\u30b7\u30fc\u306f\u3053\u306e\u3053\u3068\u3092\u5229\u7528\u3057\u3066\u3001\u3053\u308c\u3089\u306ePod\u304c\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306e\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4e88\u671f\u305b\u305a\u66f4\u65b0\u3059\u308b\u3053\u3068\u3092\u7981\u3058\u3066\u3044\u307e\u3059\u3002GKE\u4e0a\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/prisma\/cloud\">Prisma Cloud<\/a>\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u3053\u306e\u30dd\u30ea\u30b7\u30fc\u3092Alert\u4e0a\u3067<a href=\"https:\/\/docs.paloaltonetworks.com\/prisma\/prisma-cloud\/21-04\/prisma-cloud-compute-edition-admin\/access_control\/open_policy_agent.html#:~:text=Prisma%20Cloud%20provides%20a%20dynamic,to%20Defender%2C%20which%20enforces%20them.\">\u30a2\u30c9\u30df\u30c3\u30b7\u30e7\u30f3 \u30eb\u30fc\u30eb<\/a> \u30bb\u30c3\u30c8\u3068\u3057\u3066\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><!-- Crayon Syntax Highlighter v_2.7.2_beta --><\/p>\n<pre class=\"lang:default decode:true\">match[{\"msg\": msg}] {\r\n input.request.object.kind == \"Deployment\"\r\n request_by_powerful_dep_update_sa(input.request.userInfo.username)\r\n old_spec := input.request.oldObject.spec.template.spec\r\n new_spec := input.request.object.spec.template.spec\r\n new_service_account := is_updating_the_service_account(old_spec, new_spec)\r\n msg := sprintf(\"SA '%v' may be compromised, it unexpectedly tried to replace the serviceaccount of 'deployment\/%v:%v' to '%v'\", [input.request.userInfo.username, input.request.object.metadata.namespace, input.request.object.metadata.name, new_service_account])\r\n}\r\n \r\nrequest_by_powerful_dep_update_sa(username) { # metrics-server pod on GKE\r\n username == \"system:serviceaccount:kube-system:metrics-server\"\r\n} { # stackdriver pod on older GKE clusters\r\n username == \"system:serviceaccount:kube-system:metadata-agent\"\r\n}\r\n \r\nis_updating_the_service_account(oldspec, newspec) = new_service_account {\r\n oldspec.serviceAccountName != newspec.serviceAccountName\r\n new_service_account := newspec.serviceAccountName\r\n} {\r\n not has_key(oldspec, \"serviceAccountName\")\r\n new_service_account := newspec.serviceAccountName\r\n}\r\n \r\nhas_key(obj, k) {\r\n _ = obj[k]\r\n}<\/pre>\n<p><!-- [Format Time: 0.0015 seconds] --><\/p>\n<h2 id=\"Conclusion\"><strong>\u7d50\u8ad6<\/strong><\/h2>\n<p>\u7d44\u7e54\u304cKubernetes\u306b\u79fb\u884c\u3059\u308c\u3070\u653b\u6483\u8005\u3082\u305d\u308c\u306b\u8ffd\u968f\u3057\u3066\u304d\u307e\u3059\u3002<a href=\"https:\/\/unit42.paloaltonetworks.jp\/siloscape\/\">Silocape<\/a>\u306e\u3088\u3046\u306a\u6700\u8fd1\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u653b\u6483\u8005\u304c\u5358\u7d14\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3046\u653b\u6483\u304b\u3089\u3068\u304f\u306bKubernetes\u306b\u5411\u3051\u305f\u9ad8\u5ea6\u306a\u653b\u6483\u3078\u3068\u9032\u5316\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u5de7\u5999\u306a\u653b\u6483\u8005\u306b\u5bfe\u3057\u3066\u306f\u3001\u30af\u30e9\u30b9\u30bf\u5883\u754c\u3092\u4fdd\u8b77\u3059\u308b\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u3001\u653b\u6483\u8005\u306e\u300c\u7b2c2\u30b9\u30c6\u30fc\u30b8\u300d\u3068\u306a\u308b\u30d5\u30a9\u30ed\u30fc\u30a2\u30c3\u30d7\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u691c\u77e5\u30fb\u9632\u6b62\u3067\u304d\u308b\u3088\u3046\u306a\u30dd\u30ea\u30b7\u30fc\u3084\u76e3\u67fb\u30a8\u30f3\u30b8\u30f3\u3092\u9632\u5fa1\u5074\u304c\u63a1\u7528\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u7a3f\u3067\u306e\u8abf\u67fb\u306b\u3088\u308a\u3001\u305d\u3046\u3057\u305f\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u304c\u3069\u306e\u3088\u3046\u306a\u3082\u306e\u304b\u3092\u660e\u3089\u304b\u3067\u304d\u3066\u3044\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<a href=\"https:\/\/www.paloaltonetworks.jp\/prisma\/cloud\">Prisma Cloud<\/a>\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306b\u306f\u3001\u3053\u306e\u8105\u5a01\u3078\u306e\u5bfe\u51e6\u3092\u76ee\u7684\u3068\u3057\u305f\u5f0a\u793e\u306eKubernetes\u306e<a href=\"https:\/\/docs.paloaltonetworks.com\/prisma\/prisma-cloud\/prisma-cloud-admin-compute\/access_control\/open_policy_agent.html\">\u30a2\u30c9\u30df\u30c3\u30b7\u30e7\u30f3\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/a>\u6a5f\u80fd\u3068<a href=\"https:\/\/docs.paloaltonetworks.com\/prisma\/prisma-cloud\/prisma-cloud-admin-compute\/audit\/kubernetes_auditing.html\">\u76e3\u67fb<\/a>\u6a5f\u80fd\u3092\u6709\u52b9\u5316\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306e\u89e3\u6c7a\u306b\u3054\u5354\u529b\u3044\u305f\u3060\u3044\u305fGoogle\u306e\u7686\u69d8\u3068\u3001\u5831\u5968\u91d1\u3001\u305d\u3057\u3066\u30c1\u30e3\u30ea\u30c6\u30a3\u306b\u5bc4\u4ed8\u3055\u308c\u305f\u5834\u5408\u306b\u5831\u5968\u91d1\u304c2\u500d\u306b\u306a\u308b\u3068\u3044\u3046<a href=\"https:\/\/bughunters.google.com\/about\/rules\/6625378258649088#:~:text=We%20understand%20that%20some%20of%20you%20are%20not%20interested%20in%20money.%20We%20offer%20the%20option%20to%20donate%20your%20reward%20to%20an%20established%20charity.%20If%20you%20do%20so%2C%20we%20will%20double%20your%20donation%20-%20subject%20to%20our%20discretion.%20Any%20rewards%20that%20are%20unclaimed%20after%2012%20months%20will%20be%20donated%20to%20a%20charity%20of%20our%20choosing.\">\u3059\u3070\u3089\u3057\u3044\u30dd\u30ea\u30b7\u30fc<\/a>\u306b\u611f\u8b1d\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306f\u30d5\u30a1\u30a4\u30eb\u30b5\u30f3\u30d7\u30eb\u3084\u4fb5\u5bb3\u306e\u5146\u5019\u306a\u3069\u3092\u3075\u304f\u3080\u3053\u308c\u3089\u306e\u8abf\u67fb\u7d50\u679c\u3092Cyber Threat Alliance (CTA \u30b5\u30a4\u30d0\u30fc\u8105\u5a01\u30a2\u30e9\u30a4\u30a2\u30f3\u30b9) \u306e\u30e1\u30f3\u30d0\u30fc\u3068\u5171\u6709\u3057\u307e\u3057\u305f\u3002CTA \u306e\u30e1\u30f3\u30d0\u30fc\u306f\u3053\u306e\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u304a\u5ba2\u69d8\u306b\u4fdd\u8b77\u3092\u8fc5\u901f\u306b\u63d0\u4f9b\u3057\u3001\u60aa\u610f\u306e\u3042\u308b\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u8005\u3092\u4f53\u7cfb\u7684\u306b\u963b\u5bb3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f <a href=\"https:\/\/www.cyberthreatalliance.org\/\">Cyber Threat Alliance <\/a>\u304b\u3089\u3054\u89a7\u304f\u3060\u3055\u3044\uff61<\/p>\n<h3><a id=\"Additional-Resources\"><\/a><strong>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/strong><\/h3>\n<ul>\n<li><a href=\"https:\/\/www.google.com\/search?q=gke+autotpilot&amp;oq=gke+autotpilot&amp;aqs=chrome..69i57.1414j0j7&amp;sourceid=chrome&amp;ie=UTF-8\">GKE Autopilot\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/twistlock\/sa-hunter\">sa-hunter<\/a><\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/siloscape\/\">Windows\u30b3\u30f3\u30c6\u30ca\u3092\u6a19\u7684\u3068\u3059\u308b\u521d\u306e\u30de\u30eb\u30a6\u30a7\u30a2Siloscape\u304c\u30af\u30e9\u30a6\u30c9\u74b0\u5883\u3092\u4fb5\u5bb3<\/a><\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/cve-2020-8554\/\">\u672a\u4fee\u6b63\u306eKubernetes\u4e2d\u9593\u8005\u653b\u6483\u8106\u5f31\u6027\u304b\u3089\u306e\u4fdd\u8b77 (CVE-2020-8554)<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 2021\u5e742\u6708\u3001Google\u306fGoogle Kubernetes Engine(GKE)\u306e\u65b0\u3057\u3044\u904b\u7528\u30e2\u30fc\u30c9\u3067\u3042\u308bAutopilot\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002Autopilot\u3067\u306f\u3001Google\u304cKubernetes\u306e\u300c\u30cf\u30f3\u30ba<\/p>\n","protected":false},"author":323,"featured_media":134246,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4469,4436,4428,4470],"tags":[4626],"product_categories":[4345,4458],"coauthors":[1484],"class_list":["post-122289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vulnerabilities","category-cloud-cybersecurity-research-ja","category-threat-research-ja","category-vulnerabilities-ja","tag-containers","product_categories-prisma-cloud","product_categories-prisma-cloud-ja"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u304b\u3089\u300c\u5f71\u306e\u7ba1\u7406\u8005\u300d\u3078: GKE Autopilot\u306e\u8106\u5f31\u6027<\/title>\n<meta name=\"description\" content=\"2021\u5e746\u6708\u306bGKE Autopilot \u3067\u898b\u3064\u304b\u3063\u305f\u8106\u5f31\u6027\u3068\u7279\u6a29\u6607\u683c\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3001\u985e\u4f3c\u306e\u554f\u984c\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u7de9\u548c\u7b56\u306b\u3064\u3044\u3066\u3001\u30d3\u30c7\u30aa\u306b\u3088\u308b\u5b9f\u8df5\u3092\u4ea4\u3048\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unit42.paloaltonetworks.com\/ja\/gke-autopilot-vulnerabilities\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u30b3\u30f3\u30c6\u30ca\u30a8\u30b9\u30b1\u30fc\u30d7\u304b\u3089\u300c\u5f71\u306e\u7ba1\u7406\u8005\u300d\u3078: GKE Autopilot\u306e\u8106\u5f31\u6027\" \/>\n<meta property=\"og:description\" content=\"2021\u5e746\u6708\u306bGKE Autopilot \u3067\u898b\u3064\u304b\u3063\u305f\u8106\u5f31\u6027\u3068\u7279\u6a29\u6607\u683c\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3001\u985e\u4f3c\u306e\u554f\u984c\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u7de9\u548c\u7b56\u306b\u3064\u3044\u3066\u3001\u30d3\u30c7\u30aa\u306b\u3088\u308b\u5b9f\u8df5\u3092\u4ea4\u3048\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unit42.paloaltonetworks.com\/ja\/gke-autopilot-vulnerabilities\/\" \/>\n<meta property=\"og:site_name\" content=\"Unit 42\" \/>\n<meta property=\"article:published_time\" 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