{"id":7370,"date":"2021-12-28T16:23:00","date_gmt":"2021-12-28T07:23:00","guid":{"rendered":"https:\/\/www.lanscope.jp\/blogs\/2021\/12\/28\/20211228_22858\/"},"modified":"2025-07-23T09:27:22","modified_gmt":"2025-07-23T00:27:22","slug":"20211228_22858","status":"publish","type":"post","link":"https:\/\/www.lanscope.jp\/blogs\/cyber_attack_cpdi_blog\/20211228_22858\/","title":{"rendered":"\u8a71\u984c\u306eLog4j2\u306e\u8106\u5f31\u6027\uff08Log4Shell\uff09\u3068\u306f\uff1f\u5371\u967a\u6027\u3068\u5bfe\u7b56\u3092\u89e3\u8aac"},"content":{"rendered":"
<\/div>\n

<\/p>\n

\n
\n
\"\"<\/div>\n
\n

Log4j2\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u305f\u653b\u6483\u304b\u3089\u9632\u5fa1\u3059\u308b\u65b9\u6cd5\u3068\u306f\uff1f<\/p>\n

AI\u578b\u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u30bd\u30d5\u30c8?\u300cDeep Instinct\u300d\u304c
\u3069\u306e\u3088\u3046\u306b?Log4j2\u306e\u8105\u5a01\u306b\u5bfe\u5fdc\u3059\u308b\u304b\u3092\u3054\u7d39\u4ecb?<\/p>\n

\u8cc7\u6599\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n

<\/p>\n

Log4j2\u306e\u8106\u5f31\u6027\u306b\u3064\u3044\u3066\u200b<\/h2>\n

2021\u5e7412\u67089\u65e5\u3001Apache\u306e\u30ed\u30b0\u53ce\u96c6\u30c4\u30fc\u30eb\u3067\u3042\u308b\u300cLog4j2\u300d\u306b\u3001\u6df1\u523b\u306a\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u8106\u5f31\u6027\u304c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\u3002Log4j2\u306f\u3001\u5546\u7528\u3001\u975e\u5546\u7528\u3001\u81ea\u793e\u958b\u767a\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30e6\u30fc\u30b6\u30fc\u304c\u30ed\u30b0\u53ce\u96c6\u306e\u305f\u3081\u306b\u5e83\u304f\u4f7f\u7528\u3057\u3066\u3044\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eJava\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3001\u904e\u53bb\u306e\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001iCloud\u3084Minecraft\u203b\u3067\u3082\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eJava\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306f\u4f7f\u308f\u308c\u3066\u304a\u308a\u3001\u65e5\u5e38\u7684\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u591a\u304f\u304c\u4eca\u56de\u306e\u8106\u5f31\u6027\u306e\u5bfe\u8c61\u306b\u306a\u3063\u3066\u3044\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002
\n\uff08\u203b\u65e2\u306b\u8106\u5f31\u6027\u5bfe\u7b56\u304c\u5b8c\u4e86\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u3082\u3042\u308a\u307e\u3059\uff09<\/p>\n

\u3053\u306e\u8106\u5f31\u6027\u306f\u60aa\u7528\u304c\u5bb9\u6613\u3067\u3042\u308b\u3053\u3068\u3084\u3001\u3055\u307e\u3056\u307e\u306a\u88fd\u54c1\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u5e45\u5e83\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u305f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304c\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u300cGithub\u300d\u4e0a\u3067\u516c\u958b\u3055\u308c\u3066\u304a\u308a\u3001\u8106\u5f31\u6027\u306e\u60aa\u7528\u304c\u53ef\u80fd\u306a\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u8106\u5f31\u6027\u306f\u65e2\u306b\u4fee\u6b63\u7248\u304c\u63d0\u4f9b\u3055\u308c\u3066\u304a\u308a\u3001\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u5404\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u6700\u65b0\u7248\u306b\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u9802\u304f\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n

Log4Shell\u306e\u5371\u967a\u6027<\/h2>\n

\u4eca\u56de\u516c\u958b\u3055\u308c\u305fLog4j2\u306e\u8106\u5f31\u6027\u306f\u300cLog4Shell\u300d\u3068\u547c\u3070\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

Log4Shell\u306f\u3001\u5177\u4f53\u7684\u306b\u4f55\u304c\u5371\u967a\u304b\u3068\u3044\u3046\u3068\u3001\u653b\u6483\u8005\u306b\u3088\u3063\u3066\u9060\u9694\u3067\u4efb\u610f\u306e\u30b3\u30fc\u30c9\u5b9f\u884c\u304c\u3067\u304d\u3066\u3057\u307e\u3046\u70b9\u3067\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001\u653b\u6483\u5bfe\u8c61\u306e\u30b5\u30fc\u30d0\u304b\u3089\u91cd\u8981\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3084\u6539\u7ac4\u3092\u3057\u305f\u308a\u3001\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u3092\u547c\u3073\u5bc4\u305b\u3066\u5b9f\u884c\u3055\u305b\u308b\u306a\u3069\u3001\u3042\u3089\u3086\u308b\u653b\u6483\u624b\u6bb5\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

\u696d\u754c\u3084\u4f1a\u793e\u306e\u898f\u6a21\u3092\u554f\u308f\u305a\u3001\u69d8\u3005\u306a\u4f01\u696d\u3067\u5f71\u97ff\u304c\u51fa\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u307e\u305f\u4f01\u696d\u3060\u3051\u3067\u306a\u304f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5229\u7528\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u5371\u967a\u304c\u53ca\u3076\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\"\"<\/p>\n

JPCERT CC\u3067\u3082\u653b\u6483\u89b3\u6e2c\u304c\u884c\u308f\u308c\u3066\u304a\u308a\u3001\u6ce8\u610f\u559a\u8d77\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u25a012\u670810\u65e5\u4ee5\u964dJPCERT\/CC\u306e\u30cf\u30cb\u30fc\u30dd\u30c3\u30c8\u3067\u89b3\u6e2c\u3055\u308c\u305f\u3001\u300cLog4Shell\u300d\u3092\u72d9\u3046\u901a\u4fe1\u306e\u63a8\u79fb<\/p>\n

\"\"<\/p>\n

\u51fa\u5c55\uff1a2021\/12\/17 Apache Log4j2\u306eRCE\u8106\u5f31\u6027\uff08CVE-2021-44228\uff09\u3092\u72d9\u3046\u653b\u6483\u89b3\u6e2c <\/a><\/p>\n

\u4eca\u3001\u53d6\u308b\u3079\u304d\u5bfe\u7b56<\/h2>\n

\u307e\u305a\u3001log4j2\u3092\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f32.15.0\u306b\u76f4\u3061\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/p>\n

\u30d0\u30fc\u30b8\u30e7\u30f3\uff082.10\u4ee5\u4e0a\uff09\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u8a2d\u5b9a\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u300clog4j2.formatMsgNoLookups\u300d\u3092\u300ctrue\u300d\u306b\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\uff08\u30d0\u30fc\u30b8\u30e7\u30f32.15.0\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\uff09 <\/p>\n

\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\uff082.0_beta9 – 2.10.0\uff09\u3067\u306e\u4fdd\u8b77\u306f\u3001\u30af\u30e9\u30b9\u30d1\u30b9\u304b\u3089 JndiLookup \u30af\u30e9\u30b9\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3067\u53ef\u80fd\u3067\u3059\u3002log4j\u3068\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u3059\u3079\u3066\u306e\u30b3\u30fc\u30c9\u3078\u306e\u5165\u529b\u691c\u8a3c\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u5b9f\u88c5\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n

[2022\/1\/12\u65e5\u8ffd\u8a18]<\/strong>
\nlog4j2\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u968f\u6642\u66f4\u65b0\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6700\u65b0\u7248\u3092\u78ba\u8a8d\u3057\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002
\n2022\/1\/4\u6642\u70b9\u306e\u6700\u65b0\u7248
\nJava 8 \u53ca\u3073\u305d\u308c\u4ee5\u964d\u306e\u5834\u5408
\nApache Log4j 2.17.0
\n\u203b2.17.0 \u306f\u3001CVE-2021-45105 \u3092\u5bfe\u5fdc\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3059\u3002<\/p>\n

Java 7 \u306e\u5834\u5408
\nApache Log4j 2.12.3
\n\u203b2.12.3 \u306f\u3001CVE-2021-45105 \u3092\u5bfe\u5fdc\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3059\u3002<\/p>\n

\u307e\u305f\u3001Deep Instinct\u3067\u3082\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u305f\u653b\u6483\u3078\u306e\u5bfe\u7b56\u3092\u884c\u3046\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002 <\/p>\n

Deep Instinct vs Log4Shell <\/strong><\/p>\n

\u4eee\u306b\u3001\u653b\u6483\u8005\u304cLog4Shell\u3092\u60aa\u7528\u3057\u3066\u3001\u653b\u6483\u5bfe\u8c61\u306e\u30b5\u30fc\u30d0\u3084\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u4e0a\u3067\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3084\u60aa\u610f\u306e\u3042\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5b9f\u884c\u3055\u305b\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u3001Deep Instinct\u3067\u3042\u308c\u3070\u3053\u3046\u3057\u305f\u653b\u6483\u3092\u963b\u6b62\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

\u5b9f\u969b\u306b\u3001\u3069\u306e\u3088\u3046\u306b\u9632\u5fa1\u51fa\u6765\u308b\u304b\u52d5\u753b\u3082\u7528\u610f\u3057\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n

\u4e0b\u8a18Deep Instinct\u793e\u306eWeb\u30b5\u30a4\u30c8\u304b\u3089\u3054\u78ba\u8a8d\u9802\u3051\u307e\u3059\u3002<\/p>\n

\u30fbDeep Instinct vs CVE-2021-44228<\/strong><\/p>\n

https:\/\/www.deepinstinct.com\/ja\/blog\/log4shell-cve-2021-44228-what-you-need-to-know<\/a><\/p>\n

\u4e0a\u8a18URL\u306e\u52d5\u753b\u306f\u3001Deep Instinct\u3092\u642d\u8f09\u3057\u305fWindows \u304c\u8106\u5f31\u6027\u306e\u60aa\u7528\u304b\u3089\u4fdd\u8b77\u3055\u308c\u308b\u69d8\u5b50<\/strong>\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306fDeep Instinct\u306e\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u300cD-Client\u300d\u304c\u3001Windows\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u304a\u308a\u3001\u60aa\u610f\u306e\u3042\u308b\u30b5\u30fc\u30d3\u30b9\u304c\u5b9f\u884c\u3055\u308c\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u653b\u6483\u8005\u5074\u306ekali\u30de\u30b7\u30f3\u306f\u3001PowerShell\u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c\u3092\u8a66\u307f\u308b\u60aa\u610f\u306e\u3042\u308bHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001\u653b\u6483\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002 <\/p>\n

\u3053\u306e\u3088\u3046\u306bDeep Instinct\u3067\u3042\u308c\u3070Log4j2\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u305f\u653b\u6483\u304b\u3089\u30b5\u30fc\u30d0\u3084\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u9632\u5fa1\u3057\u307e\u3059\u3002\u307e\u305f\u3001MOTEX\u3067\u306fDeep Instinct\u306e\u7121\u6599\u4f53\u9a13\u7248\u3092\u3054\u7528\u610f\u3057\u3066\u304a\u308a\u307e\u3059\u3002 <\/p>\n

\u5f0a\u793eSE\u304c\u7121\u511f\u3067\u64cd\u4f5c\u65b9\u6cd5\u3092\u30ec\u30af\u30c1\u30e3\u30fc\u3057\u307e\u3059\u306e\u3067\u3001\u3069\u3053\u3088\u308a\u3082\u624b\u539a\u304f\u30d5\u30a9\u30ed\u30fc\u3055\u305b\u3066\u9802\u304d\u307e\u3059\u3002\u3054\u8208\u5473\u3042\u308a\u307e\u3057\u305f\u3089\u3001\u304a\u6c17\u517c\u306d\u306a\u304f\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u307e\u305b\u3002 <\/p>\n

\u203b\u672c\u8a18\u4e8b\u306f\u3001\u5354\u696d\u4f01\u696d\u306eDeep Instinct\u793e\u306e\u30d6\u30ed\u30b0\u3088\u308a\u4e00\u90e8\u8ee2\u8f09\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u8ee2\u8f09\u5143\u30d6\u30ed\u30b0URL
\nhttps:\/\/www.deepinstinct.com\/ja\/blog\/log4shell-cve-2021-44228-what-you-need-to-know<\/a><\/p>\n

<\/p>\n

\n
\n
\"\"<\/div>\n
\n

Log4j2\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u305f\u653b\u6483\u304b\u3089\u9632\u5fa1\u3059\u308b\u65b9\u6cd5\u3068\u306f\uff1f<\/p>\n

AI\u578b\u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u30bd\u30d5\u30c8?\u300cDeep Instinct\u300d\u304c
\u3069\u306e\u3088\u3046\u306b?Log4j2\u306e\u8105\u5a01\u306b\u5bfe\u5fdc\u3059\u308b\u304b\u3092\u3054\u7d39\u4ecb?<\/p>\n

\u8cc7\u6599\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n

\n
\n
\"\"<\/div>\n
\n

\u9032\u5316\u3057\u305fAI\u30a2\u30f3\u30c1\u30a6\u30a4\u30eb\u30b9
\u300cCPMS powered by Deep Instinct\u300d\u3092\u7121\u6599\u4f53\u9a13<\/p>\n

\u8cc7\u6599\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

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  • \r\n     Log4Shell\u306e\u5371\u967a\u6027<\/a>
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