{"id":47474,"date":"2021-12-16T15:30:46","date_gmt":"2021-12-16T06:30:46","guid":{"rendered":"https:\/\/www.creationline.com\/?p=47474"},"modified":"2021-12-16T16:58:30","modified_gmt":"2021-12-16T07:58:30","slug":"cve-2021-45046%ef%bc%9alog4j-%e3%81%ae%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3%e8%84%86%e5%bc%b1%e6%80%a7-2%e4%bb%b6%e7%9b%ae-%e3%81%8c%e7%99%ba%e8%a6%8b-aqua-%e3%82%bb%e3%82%ad","status":"publish","type":"post","link":"https:\/\/www.creationline.com\/tech-blog\/cloudnative\/aquasecurity\/47474","title":{"rendered":"CVE-2021-45046\uff1aLog4j \u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8106\u5f31\u6027 (2\u4ef6\u76ee) \u304c\u767a\u898b #aqua #\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 #\u8106\u5f31\u6027 #java #CVE202145046 #log4j"},"content":{"rendered":"<p>\u672c\u30d6\u30ed\u30b0\u306f\u300cAqua Security\u300d\u793e\u306e\u6280\u8853\u30d6\u30ed\u30b0\u30672021\u5e7412\u670815\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u300c<a href=\"https:\/\/blog.aquasec.com\/second-log4j-security-vulnerability\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"> CVE-2021-45046: Second Log4j Security Vulnerability Discovered <\/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\/2021\/12\/8d444e98e0be7b1aefb41e9d0f64eee3.png\" alt=\"\" width=\"865\" height=\"418\" class=\"alignnone size-full wp-image-47476\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/12\/8d444e98e0be7b1aefb41e9d0f64eee3.png 865w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/12\/8d444e98e0be7b1aefb41e9d0f64eee3-360x174.png 360w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2021\/12\/8d444e98e0be7b1aefb41e9d0f64eee3-768x371.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><\/center><\/p>\n<h2>CVE-2021-45046\uff1aLog4j \u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8106\u5f31\u6027 (2\u4ef6\u76ee) \u304c\u767a\u898b<\/h2>\n<hr \/>\n<p>\u591a\u304f\u306e\u7d44\u7e54\u304c\u524d\u56de\u306e Log4j CVE \u306e\u767a\u898b\u3068\u7de9\u548c\u30d7\u30ed\u30bb\u30b9\u306b\u5bfe\u51e6\u3057\u3066\u3044\u308b\u4e2d\u3001\u540c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u3001Log4j 2.15.0 \u306e\u4e0d\u5b8c\u5168\u306a\u4fee\u6b63\u306b\u3088\u308a\u3001\u5225\u306e\u8106\u5f31\u6027 CVE-2021-45046 \u304c\u767a\u898b\u3055\u308c\u305f\u3053\u3068\u3092\u767a\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u53d7\u3051\u3066\u3001\u5143\u306e\u554f\u984c\u306e\u539f\u56e0\u3067\u3042\u3063\u305f JNDI \u6a5f\u80fd\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u7121\u52b9\u306b\u3059\u308b Log4j \u306e\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3(2.16.0)\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3>\u30ea\u30b9\u30af\u8efd\u6e1b\u304c\u4e0d\u5b8c\u5168<\/h3>\n<p>\u6700\u521d\u306e\u8106\u5f31\u6027\u304c\u516c\u8868\u3055\u308c\u3066\u4ee5\u6765\u3001\u30d1\u30c3\u30c1\u304c\u3059\u3050\u306b\u9069\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306e\u7de9\u548c\u7b56\u304c\u6570\u591a\u304f\u63d0\u6848\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u3088\u3046\u306a\u7de9\u548c\u7b56\u304c\u3044\u3061\u65e9\u304f\u63d0\u793a\u3055\u308c\u3066\u3082\u3001\u305d\u306e\u5f8c\u306e\u8abf\u67fb\u306b\u3088\u3063\u3066\u3001\u5f53\u521d\u8003\u3048\u3089\u308c\u3066\u3044\u305f\u307b\u3069\u5f37\u56fa\u306a\u3082\u306e\u3067\u306f\u306a\u3044\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u5f53\u521d\u3053\u306e\u554f\u984c\u3092\u7de9\u548c\u3059\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u305f\u3001Java \u3092\u8d77\u52d5\u3059\u308b\u969b\u306b formatMsgNoLookups=true \u3092\u8a2d\u5b9a\u3059\u308b\u3001\u307e\u305f\u306f\u74b0\u5883\u5909\u6570\u3068\u3057\u3066 LOG4J_FORMAT_MSG_NO_LOOKUPS=true \u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<br \/>\n\u6700\u8fd1\u306e\u8abf\u67fb\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u7de9\u548c\u7b56\u3092\u65bd\u3057\u3066\u3082\u3001\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e Log4j \u306b\u306f\u3001\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u6027\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u7d50\u8ad6\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n<a href=\"https:\/\/www.lunasec.io\/docs\/blog\/log4j-zero-day-update-on-cve-2021-45046\/\" rel=\"noopener\" target=\"_blank\"><\/a><\/p>\n<p>CVE-2021-45046 \u3067\u6307\u6458\u3055\u308c\u305f\u8ffd\u52a0\u306e\u30ea\u30b9\u30af\u306f\u3001Log4j 2.15.0 \u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3068\u304d\u306b\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b DoS \u653b\u6483\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u4e00\u822c\u7684\u306b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u3088\u308a\u3082\u6df1\u523b\u3067\u306f\u306a\u3044\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u3059\u304c\u3001\u4f01\u696d\u306b\u3068\u3063\u3066\u6700\u3082\u5b89\u5168\u306a\u9078\u629e\u80a2\u306f\u3001Log4j \u3092\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3053\u3068\u306b\u5909\u308f\u308a\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>Aqua\u306b\u3067\u304d\u308b\u3053\u3068<\/h3>\n<p>\u30aa\u30ea\u30b8\u30ca\u30eb\u306e Log4j \u306e\u554f\u984c\u306b\u5bfe\u3057\u3066<a href=\"\/lab\/aquasecurity\/47375\" rel=\"noopener\" target=\"_blank\">Aqua\u304c\u516c\u958b\u3057\u305f\u691c\u51fa\u304a\u3088\u3073\u7de9\u548c\u7b56<\/a>\u306f\u3001Log4j 2.15.0 \u3067\u767a\u751f\u3059\u308b\u554f\u984c\u306b\u3082\u540c\u69d8\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>Trivy\u3092\u4f7f\u3063\u3066\u8106\u5f31\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u691c\u51fa<\/h3>\n<p>Aqua \u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30b9\u30ad\u30e3\u30ca\u30fc\u30c4\u30fc\u30eb <a href=\"https:\/\/www.aquasec.com\/products\/trivy\/\" rel=\"noopener\" target=\"_blank\">Trivy<\/a> \u306f\u3001\u30aa\u30ea\u30b8\u30ca\u30eb\u306e Log4j \u306e\u554f\u984c(<a href=\"\/lab\/aquasecurity\/47375\" rel=\"noopener\" target=\"_blank\">CVE-2021-44228<\/a>)\u3068\u4eca\u56de\u306e\u65b0\u3057\u3044\u554f\u984c\u306e\u4e21\u65b9\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u3002\u65e2\u77e5\u306e\u8106\u5f31\u306a Log4j \u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u6301\u3064\u30b3\u30f3\u30c6\u30ca\u30a4\u30e1\u30fc\u30b8\u3092\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<p><center><img decoding=\"async\" src=\"https:\/\/blog.aquasec.com\/hs-fs\/hubfs\/Picture1-Dec-15-2021-01-09-43-70-PM.png?width=850&name=Picture1-Dec-15-2021-01-09-43-70-PM.png\" alt=\"\" \/><\/center><\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<hr \/>\n<p>Log4j \u306e\u8106\u5f31\u6027\u306f\u3001\u3053\u3053\u6700\u8fd1\u3067\u6700\u5927\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u554f\u984c\u306e1\u3064\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u653b\u6483\u5074\u3068\u9632\u5fa1\u5074\u306e\u4e21\u65b9\u304c\u3053\u306e\u554f\u984c\u306b\u6ce8\u76ee\u3057\u3066\u3044\u308b\u4eca\u3001\u3055\u3089\u306a\u308b\u60c5\u5831\u3084\u6f5c\u5728\u7684\u306a\u8106\u5f31\u6027\u304c\u767a\u898b\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5f53\u9762\u306e\u5bfe\u5fdc\u3068\u3057\u3066\u3001\u4f01\u696d\u306f\u3053\u306e\u7a2e\u306e\u30ea\u30b9\u30af\u3092\u3069\u3046\u3084\u3063\u3066\u6226\u7565\u7684\u306b\u7ba1\u7406\u3059\u308b\u304b\u3001\u614e\u91cd\u306b\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u691c\u51fa\u306e\u6539\u5584\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b5\u30d7\u30e9\u30a4\u30c1\u30a7\u30fc\u30f3\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30c4\u30fc\u30eb\u306e\u5229\u7528\u306f\u3001\u77ed\u671f\u7684\u306a\u8efd\u6e1b\u7b56\u3092\u63d0\u4f9b\u3067\u304d\u308b\u300c\u6df1\u5c64\u9632\u8b77\u300d\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u597d\u4f8b\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001IT \u90e8\u9580\u306f\u5b89\u5168\u304b\u3064\u7ba1\u7406\u3055\u308c\u305f\u65b9\u6cd5\u3067\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b7\u30b9\u30c6\u30e0\u306e\u5305\u62ec\u7684\u306a\u30d1\u30c3\u30c1\u9069\u7528\u3068\u30c6\u30b9\u30c8\u3092\u8abf\u6574\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u6642\u9593\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><center>\n\t\t<!--HubSpot Call-to-Action Code -->\n\t\t<span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-fecc193b-bbc5-40d2-9588-ed7b022af3aa\">\n\t\t<span class=\"hs-cta-node hs-cta-fecc193b-bbc5-40d2-9588-ed7b022af3aa\" id=\"fecc193b-bbc5-40d2-9588-ed7b022af3aa\">\n\t\t<!--[if lte IE 8]>\n\t\t<div id=\"hs-cta-ie-element\"><\/div>\n\t\t<![endif]-->\n\t\t<a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6168413\/fecc193b-bbc5-40d2-9588-ed7b022af3aa\" >\n\t\t<img decoding=\"async\" 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\u30672021\u5e7412\u670815\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u300c CVE-2021-45046: Second Log4j Security Vulnerability Discovered  [&#8230;]<\/p>\n","protected":false},"author":56,"featured_media":47476,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[176],"tags":[174,152,574,575,578,579,577,358,376],"class_list":["post-47474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aquasecurity","tag-aqua","tag-aquasecurity","tag-cve202144228","tag-java","tag-l","tag-log4j","tag-log4shel","tag-358","tag-376"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CVE-2021-45046\uff1aLog4j \u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8106\u5f31\u6027 (2\u4ef6\u76ee) \u304c\u767a\u898b #aqua #\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 #\u8106\u5f31\u6027 #java #CVE202145046 #log4j - Tech Blog\uff5c\u30af\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u30e9\u30a4\u30f3<\/title>\n<meta name=\"description\" content=\"AquaSecurity |\u672c\u30d6\u30ed\u30b0\u306f\u300cAqua Security\u300d\u793e\u306e\u6280\u8853\u30d6\u30ed\u30b0\u30672021\u5e7412\u670815\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u300c CVE-2021-45046: Second Log4j\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.creationline.com\/tech-blog\/cloudnative\/aquasecurity\/47474\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CVE-2021-45046\uff1aLog4j \u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8106\u5f31\u6027 (2\u4ef6\u76ee) \u304c\u767a\u898b #aqua #\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 #\u8106\u5f31\u6027 #java #CVE202145046 #log4j - Tech Blog\uff5c\u30af\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u30e9\u30a4\u30f3\" \/>\n<meta property=\"og:description\" content=\"AquaSecurity |\u672c\u30d6\u30ed\u30b0\u306f\u300cAqua Security\u300d\u793e\u306e\u6280\u8853\u30d6\u30ed\u30b0\u30672021\u5e7412\u670815\u65e5\u306b\u516c\u958b\u3055\u308c\u305f\u300c CVE-2021-45046: Second Log4j\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.creationline.com\/tech-blog\/cloudnative\/aquasecurity\/47474\" \/>\n<meta property=\"og:site_name\" content=\"Tech Blog\uff5c\u30af\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u30e9\u30a4\u30f3\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/creationline\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-16T06:30:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-12-16T07:58:30+00:00\" \/>\n<meta property=\"og:image\" 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