{"id":49754,"date":"2022-03-18T09:00:09","date_gmt":"2022-03-18T00:00:09","guid":{"rendered":"https:\/\/www.creationline.com\/?p=49754"},"modified":"2022-03-16T20:34:30","modified_gmt":"2022-03-16T11:34:30","slug":"dirty-pipe-linux%e3%81%ae%e8%84%86%e5%bc%b1%e6%80%a7%ef%bc%9a%e3%82%b3%e3%83%b3%e3%83%86%e3%83%8a%e3%82%a4%e3%83%a1%e3%83%bc%e3%82%b8%e3%81%ae%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e4%b8%8a%e6%9b%b8","status":"publish","type":"post","link":"https:\/\/www.creationline.com\/tech-blog\/cloudnative\/aquasecurity\/49754","title":{"rendered":"Dirty Pipe Linux\u306e\u8106\u5f31\u6027\uff1a\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u4e0a\u66f8\u304d #aqua #\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 #\u30b3\u30f3\u30c6\u30ca #dirtypipe #linux #cve20220847"},"content":{"rendered":"<p>\u672c\u30d6\u30ed\u30b0\u306f\u300cAqua Security\u300d\u793e\u306e\u6280\u8853\u30d6\u30ed\u30b0\u30672022\u5e743\u67088\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u300c<a href=\"https:\/\/blog.aquasec.com\/cve-2022-0847-dirty-pipe-linux-vulnerability\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"> Dirty Pipe Linux Vulnerability: Overwriting Files in Container Images <\/a>\u300d\u306e\u65e5\u672c\u8a9e\u7ffb\u8a33\u3067\u3059\u3002<\/p>\n<p><center><img loading=\"lazy\" decoding=\"async\" src=\"\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2022\/03\/ec8d771dc1bda51ecccf93ffbf342965.png\" alt=\"\" width=\"867\" height=\"418\" class=\"alignnone size-full wp-image-49756\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2022\/03\/ec8d771dc1bda51ecccf93ffbf342965.png 867w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2022\/03\/ec8d771dc1bda51ecccf93ffbf342965-360x174.png 360w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2022\/03\/ec8d771dc1bda51ecccf93ffbf342965-768x370.png 768w\" sizes=\"auto, (max-width: 867px) 100vw, 867px\" \/><\/center><\/p>\n<h2>Dirty Pipe Linux\u306e\u8106\u5f31\u6027\uff1a\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u4e0a\u66f8\u304d<\/h2>\n<hr \/>\n<p>\u4eca\u9031 Linux \u30ab\u30fc\u30cd\u30eb\u306b\u304a\u3051\u308b\u65b0\u305f\u306a CVE \u304c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\u3002CVE-2022-0847 \u306f\u3001\u5225\u540d\u300cDirty Pipe\u300d\u3068\u547c\u3070\u308c\u3001Linux \u30b7\u30b9\u30c6\u30e0\u4e0a\u306e\u30e6\u30fc\u30b6\u304c\u3001\u8aad\u307f\u53d6\u308a\u306f\u3067\u304d\u308b\u304c\u66f8\u304d\u8fbc\u307f\u306f\u3067\u304d\u306a\u3044\u306f\u305a\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u4e0a\u66f8\u304d\u3067\u304d\u308b\u8106\u5f31\u6027\u3067\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u3092\u3001Docker \u306a\u3069\u306e\u30b3\u30f3\u30c6\u30ca\u5316\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u30db\u30b9\u30c8\u306e\u89b3\u70b9\u304b\u3089\u898b\u308b\u3068\u3001\u30db\u30b9\u30c8\u4e0a\u306e\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u3001\u30b3\u30f3\u30c6\u30ca\u5185\u90e8\u304b\u3089\u5909\u66f4\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059(\u4e00\u822c\u7684\u306b\u306f\u4e0d\u53ef\u80fd\u306a\u306f\u305a\u3067\u3059)\u3002<\/p>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u653b\u6483\u8005\u306f\u3001\u5171\u6709\u30a4\u30e1\u30fc\u30b8\u306b\u5bfe\u3057\u3066\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30b3\u30f3\u30c6\u30ca\u3092\u52b9\u679c\u7684\u306b\u5909\u66f4\u3057\u305f\u308a\u3001\u30db\u30b9\u30c8\u4e0a\u306e\u30a4\u30e1\u30fc\u30b8\u3092\u6c5a\u67d3\u3057\u3066\u3001\u65b0\u3057\u3044\u30b3\u30f3\u30c6\u30ca\u304c\u5909\u66f4\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u554f\u984c\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u306b\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30b7\u30b9\u30c6\u30e0(Linux \u30ab\u30fc\u30cd\u30eb 5.8 \u4ee5\u4e0a\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0)\u306b\u306f\u3001\u76f4\u3061\u306b\u30d1\u30c3\u30c1\u304c\u9069\u7528\u3055\u308c\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n<h3>\u6280\u8853\u7684\u306a\u8a73\u7d30<\/h3>\n<p><a href=\"https:\/\/dirtypipe.cm4all.com\/\" rel=\"noopener\" target=\"_blank\">\u3053\u306e\u8106\u5f31\u6027\u3092\u516c\u958b\u3057\u305f\u30da\u30fc\u30b8<\/a>\u306b\u306f\u8a73\u7d30\u3068\u8a73\u7d30\u306a\u80cc\u666f\u304c\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f\u30b3\u30f3\u30c6\u30ca\u306e\u89b3\u70b9\u304b\u3089\u306e\u5f71\u97ff\u306b\u7126\u70b9\u3092\u5f53\u3066\u307e\u3059\u3002<\/p>\n<p>\u6700\u65b0\u306e\u30b3\u30f3\u30c6\u30ca\u5316\u3067\u306f\u3001Overlay \u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u4f7f\u7528\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002Overlay \u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u5171\u6709\u306e\u8aad\u307f\u53d6\u308a\u5c02\u7528\u30a4\u30e1\u30fc\u30b8\u3092\u4f7f\u7528\u3057\u3066\u3001\u5b9f\u884c\u4e2d\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u5185\u306e\u30e6\u30fc\u30b6\u304c\u57fa\u790e\u3068\u306a\u308b\u30a4\u30e1\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5909\u66f4\u3059\u308b\u5834\u5408\u3001\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u305d\u306e\u30b3\u30f3\u30c6\u30ca\u5c02\u7528\u306e\u65b0\u3057\u3044\u5834\u6240\u306b\u30b3\u30d4\u30fc\u3055\u308c\u3001\u305d\u3053\u3067\u5909\u66f4\u304c\u9069\u7528\u3055\u308c\u308b\u306f\u305a\u3067\u3059\u3002\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u5909\u66f4\u3055\u308c\u306a\u3044\u307e\u307e\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>Max Kellermann \u6c0f\u306e\u30d6\u30ed\u30b0\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u57fa\u76e4\u30b7\u30b9\u30c6\u30e0\u4e0a\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5909\u66f4\u3057\u3001\u4f55\u304c\u8d77\u3053\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u74b0\u5883\u306f\u3001Docker 20.10.10 \u3092\u5b9f\u884c\u3057\u3066\u3044\u308b Ubuntu 21.04 \u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u73fe\u5728\u30ed\u30fc\u30ab\u30eb\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306f\u306a\u3044\u72b6\u614b\u3067\u3059\u3002<\/p>\n<p><center><img decoding=\"async\" src=\"https:\/\/blog.aquasec.com\/hs-fs\/hubfs\/Blog\/dirty-pipe-1.jpg?width=750&name=dirty-pipe-1.jpg\" alt=\"\" \/><\/center><\/p>\n<p>\u307e\u305a\u3001ubuntu:21.04 \u30a4\u30e1\u30fc\u30b8\u3092\u30d9\u30fc\u30b9\u306b\u3057\u305f\u30b3\u30f3\u30c6\u30ca\u3092\u8d77\u52d5\u3057\u3001<a href=\"https:\/\/www.aquasec.com\/cloud-native-academy\/docker-container\/using-docker-hub-responsibly-4-security-best-practices\/?_ga=2.62669482.78830428.1646619911-599449579.1630040717\" rel=\"noopener\" target=\"_blank\">Docker Hub<\/a> \u304b\u3089\u65b0\u305f\u306a\u30a4\u30e1\u30fc\u30b8\u306e\u30b3\u30d4\u30fc\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u3053\u306e exploit \u306f\u3069\u306e\u30a4\u30e1\u30fc\u30b8\u3067\u3082\u52d5\u4f5c\u3059\u308b\u306f\u305a\u3067\u3059\u304c\u3001\u3053\u306e\u30a4\u30e1\u30fc\u30b8\u306f\u30af\u30ea\u30fc\u30f3\u306a\u30a4\u30e1\u30fc\u30b8\u304c\u30d9\u30fc\u30b9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001\u5143\u306e\u8106\u5f31\u6027\u516c\u958b\u30d6\u30ed\u30b0\u306b\u3042\u308b\u30b3\u30fc\u30c9\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u30b3\u30d4\u30fc\u3057\u3001\u57fa\u76e4\u3068\u306a\u308b\u30a4\u30e1\u30fc\u30b8\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u3092\u5909\u66f4\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\u30c7\u30e2\u3068\u3057\u3066\u3001\/etc\/shells \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u6700\u521d\u306b\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u4e88\u60f3\u901a\u308a\u306b\u6b21\u306e\u3088\u3046\u306a\u5185\u5bb9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><center><img decoding=\"async\" src=\"https:\/\/blog.aquasec.com\/hs-fs\/hubfs\/Blog\/dirty-pipe-2.jpg?width=750&name=dirty-pipe-2.jpg\" alt=\"\" \/><\/center><\/p>\n<p>\u6b21\u306b\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u5b9f\u884c\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5148\u982d\u306b\u300cHello World\u300d\u3068\u3044\u3046\u6587\u5b57\u5217\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3092\u8a66\u307f\u307e\u3059\u3002\u305d\u306e\u30b3\u30f3\u30c6\u30ca\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3001\u5909\u66f4\u3055\u308c\u305f\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u60f3\u5b9a\u5185\u306e\u6319\u52d5\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3070\u3001\u3053\u306e\u6642\u70b9\u3067\u306f\u305d\u306e\u30b3\u30f3\u30c6\u30ca\u306e root \u30e6\u30fc\u30b6\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p><center><img decoding=\"async\" src=\"https:\/\/blog.aquasec.com\/hs-fs\/hubfs\/Blog\/dirty-pipe-3.jpg?width=750&name=dirty-pipe-3.jpg\" alt=\"\" \/><\/center><\/p>\n<p>\u3053\u3053\u3067\u30db\u30b9\u30c8\u306b\u623b\u308a\u3001\u540c\u3058\u30a4\u30e1\u30fc\u30b8\u3092\u30d9\u30fc\u30b9\u306b\u3057\u305f\u65b0\u3057\u3044\u30b3\u30f3\u30c6\u30ca\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u65b0\u3057\u3044\u30b3\u30f3\u30c6\u30ca\u306b\u306f\u3001\u5909\u66f4\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306f\u300c\u306a\u3044\u300d\u306f\u305a\u3067\u3059\u3002<\/p>\n<p><center><img decoding=\"async\" src=\"https:\/\/blog.aquasec.com\/hs-fs\/hubfs\/Blog\/dirty-pipe-4.jpg?width=750&name=dirty-pipe-4.jpg\" alt=\"\" \/><\/center><\/p>\n<p>\u3067\u3059\u304c\u3001\u3053\u3053\u3067\u5909\u66f4\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u306f\u3063\u304d\u308a\u3068\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304c\u4e88\u60f3\u901a\u308a\u52d5\u4f5c\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306f\u3001\u65e2\u5b58\u306e\u30b3\u30f3\u30c6\u30ca\u306b\u3082\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u5171\u6709\u30a4\u30e1\u30fc\u30b8\u3092\u4f7f\u7528\u3059\u308b 10 \u500b\u306e nginx \u30b3\u30f3\u30c6\u30ca\u304c\u3042\u308b\u30db\u30b9\u30c8\u3067\u3001\u653b\u6483\u8005\u304c 1 \u3064\u306e nginx.conf \u30d5\u30a1\u30a4\u30eb\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u3001\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30a4\u30e1\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u307e\u3060\u4f7f\u7528\u3057\u3066\u3044\u308c\u3070\u3001\u4ed6\u306e\u30b3\u30f3\u30c6\u30ca\u306e\u30d5\u30a1\u30a4\u30eb\u3082\u5373\u5ea7\u306b\u5909\u66f4\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30db\u30b9\u30c8\u304b\u3089\u30dc\u30ea\u30e5\u30fc\u30e0\u304c\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3067\u30de\u30a6\u30f3\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3082\u3001\u3053\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3059\u308c\u3070\u3001\u305d\u306e\u5236\u9650\u3092\u7121\u52b9\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u5f71\u97ff\u7bc4\u56f2\u3068\u8efd\u6e1b\u7b56<\/h2>\n<hr 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class=\"hs-cta-img\" id=\"hs-cta-img-fecc193b-bbc5-40d2-9588-ed7b022af3aa\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6168413\/fecc193b-bbc5-40d2-9588-ed7b022af3aa.png\"  alt=\"New call-to-action\"\/>\n\t\t<\/a>\n\t\t<\/span>\n\t\t<script charset=\"utf-8\" src=\"\/\/js.hubspot.com\/cta\/current.js\"><\/script>\n\t\t<script>\n\t\thbspt.cta.load(6168413, 'fecc193b-bbc5-40d2-9588-ed7b022af3aa', {});\n\t\t<\/script>\n\t\t<\/span>\n\t\t<!-- end HubSpot Call-to-Action Code -->\n\t\t<\/center><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u30d6\u30ed\u30b0\u306f\u300cAqua Security\u300d\u793e\u306e\u6280\u8853\u30d6\u30ed\u30b0\u30672022\u5e743\u67088\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u300c Dirty Pipe Linux Vulnerability: Overwriting Files in Container Im [&#8230;]<\/p>\n","protected":false},"author":56,"featured_media":49756,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[176],"tags":[174,152,626,625,602,286,358],"class_list":["post-49754","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aquasecurity","tag-aqua","tag-aquasecurity","tag-cve20220847","tag-dirtypipe","tag-linux","tag-286","tag-358"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Dirty Pipe Linux\u306e\u8106\u5f31\u6027\uff1a\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u4e0a\u66f8\u304d #aqua #\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 #\u30b3\u30f3\u30c6\u30ca #dirtypipe #linux #cve20220847 - Tech 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