{"id":11513,"date":"2021-08-26T14:53:00","date_gmt":"2021-08-26T05:53:00","guid":{"rendered":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/?p=11513"},"modified":"2023-10-17T11:43:29","modified_gmt":"2023-10-17T02:43:29","slug":"openssl%e3%81%ae%e8%84%86%e5%bc%b1%e6%80%a7%ef%bc%88cve-2021-3711%e3%80%81cve-2021-3712%ef%bc%89%e3%81%ab%e9%96%a2%e3%81%99%e3%82%8b%e6%b3%a8%e6%84%8f%e5%96%9a%e8%b5%b7","status":"publish","type":"post","link":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/public\/heads-up\/openssl%e3%81%ae%e8%84%86%e5%bc%b1%e6%80%a7%ef%bc%88cve-2021-3711%e3%80%81cve-2021-3712%ef%bc%89%e3%81%ab%e9%96%a2%e3%81%99%e3%82%8b%e6%b3%a8%e6%84%8f%e5%96%9a%e8%b5%b7\/","title":{"rendered":"OpenSSL\u306e\u8106\u5f31\u6027\uff08CVE-2021-3711\u3001CVE-2021-3712\uff09\u306b\u95a2\u3059\u308b\u6ce8\u610f\u559a\u8d77"},"content":{"rendered":"\n<p>I. \u6982\u8981<br \/>2021\u5e748\u670824\u65e5\uff08\u73fe\u5730\u6642\u9593\uff09\u3001OpenSSL Project\u304b\u3089OpenSSL\u306e\u8106\u5f31\u6027\uff08CVE-2021-3711\u3001CVE-2021-3712\uff09\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u91cd\u8981\u5ea6\u300cHigh\u300d\u3068\u3055\u308c\u308b\u8106\u5f31\u6027\uff08CVE-2021-3711\uff09\u306f\u3001\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u300cSM2\u300d\u306e\u5fa9\u53f7\u51e6\u7406\u306e\u5b9f\u88c5\u306b\u304a\u3051\u308b\u8106\u5f31\u6027\u3067\u3001\u300cSM2\u300d\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u5fa9\u53f7\u3059\u308bAPI\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u969b\u306b\u30d0\u30c3\u30d5\u30a1\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\u8106\u5f31\u6027\u3092\u60aa\u7528\u3059\u308b\u7d30\u5de5\u3055\u308c\u305fSM2\u30c7\u30fc\u30bf\u304c\u6e21\u3055\u308c\u308b\u3068\u3001OpenSSL\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u52d5\u4f5c\u304c\u5909\u66f4\u3055\u308c\u305f\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u904b\u7528\u59a8\u5bb3\uff08DoS\uff09\u653b\u6483\u304c\u884c\u308f\u308c\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u91cd\u8981\u5ea6\u300cMedium\u300d\u3068\u3055\u308c\u308b\u8106\u5f31\u6027\uff08CVE-2021-3712\uff09\u306f\u3001\u300cASN.1\u300d\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u51e6\u7406\u306b\u304a\u3051\u308b\u30d0\u30c3\u30d5\u30a1\u30fc\u30aa\u30fc\u30d0\u30fc\u30e9\u30f3\u306e\u8106\u5f31\u6027\u3067\u3001\u8106\u5f31\u6027\u304c\u60aa\u7528\u3055\u308c\u308b\u3068\u3001\u30e1\u30e2\u30ea\u4e0a\u306e\u6a5f\u5fae\u306a\u60c5\u5831\u304c\u8aad\u307f\u53d6\u3089\u308c\u305f\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u904b\u7528\u59a8\u5bb3\uff08DoS\uff09\u653b\u6483\u304c\u884c\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u8106\u5f31\u6027\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001OpenSSL Project\u306e\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\u53c2\u8003\uff1a<a href=\"https:\/\/www.jpcert.or.jp\/at\/2021\/at210036.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.jpcert.or.jp\/at\/2021\/at210036.html<\/a><\/p>\n<p>OpenSSL Project<br \/>OpenSSL Security Advisory [24 August 2021]<br \/><a href=\"https:\/\/www.openssl.org\/news\/secadv\/20210824.txt\" target=\"_blank\" rel=\"noopener\">https:\/\/www.openssl.org\/news\/secadv\/20210824.txt<\/a><\/p>\n<p>\u5bfe\u8c61\u3068\u306a\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306f\u3001\u300cIII. \u5bfe\u7b56\u300d\u3092\u53c2\u8003\u306b\u3001\u65e9\u671f\u306e\u5bfe\u5fdc\u3092\u884c\u3046\u3053\u3068\u3092\u5f37\u304f\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n<p><br \/>II. \u5bfe\u8c61<br \/>\u5bfe\u8c61\u3068\u306a\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p>CVE-2021-3711<br \/>&#8211; OpenSSL 1.1.1k\u304a\u3088\u3073\u305d\u308c\u4ee5\u524d\u306e1.1.1\u7cfb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<\/p>\n<p>CVE-2021-3712<br \/>&#8211; OpenSSL 1.1.1k\u304a\u3088\u3073\u305d\u308c\u4ee5\u524d\u306e1.1.1\u7cfb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<br \/>&#8211; OpenSSL 1.0.2y\u304a\u3088\u3073\u305d\u308c\u4ee5\u524d\u306e1.0.2\u7cfb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<\/p>\n<p>\u306a\u304a\u3001OpenSSL Project\u306b\u3088\u308b\u3068OpenSSL 1.0.2\u3001OpenSSL 1.1.0\u306b\u3064\u3044\u3066\u306f\u3001\u65e2\u306b\u30b5\u30dd\u30fc\u30c8\u304c\u7d42\u4e86\u3057\u3066\u304a\u308a\u3001\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u958b\u767a\u8005\u306f\u3001OpenSSL1.1.1l\u3078\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><br \/>III. \u5bfe\u7b56<br \/>OpenSSL Project\u304b\u3089\u8106\u5f31\u6027\u3092\u4fee\u6b63\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306eOpenSSL\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\u5341\u5206\u306a\u30c6\u30b9\u30c8\u3092\u5b9f\u65bd\u306e\u4e0a\u3001\u4fee\u6b63\u6e08\u307f\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>&#8211; OpenSSL 1.1.1l<\/p>\n<p><br \/>IV. \u53c2\u8003\u60c5\u5831<br \/>OpenSSL Project<br \/>OpenSSL Security Advisory [24 August 2021]<br \/><a href=\"https:\/\/www.openssl.org\/news\/secadv\/20210824.txt\" target=\"_blank\" rel=\"noopener\">https:\/\/www.openssl.org\/news\/secadv\/20210824.txt<\/a><\/p>\n<p>Ubuntu<br \/>CVE-2021-3711<br \/><a href=\"https:\/\/ubuntu.com\/security\/CVE-2021-3711\" target=\"_blank\" rel=\"noopener\">https:\/\/ubuntu.com\/security\/CVE-2021-3711<\/a><br \/>CVE-2021-3712<br \/><a href=\"https:\/\/ubuntu.com\/security\/CVE-2021-3712\" target=\"_blank\" rel=\"noopener\">https:\/\/ubuntu.com\/security\/CVE-2021-3712<\/a><\/p>\n<p>Red Hat Customer Portal<br \/>CVE-2021-3711<br \/><a href=\"https:\/\/access.redhat.com\/security\/cve\/cve-2021-3711\" target=\"_blank\" rel=\"noopener\">https:\/\/access.redhat.com\/security\/cve\/cve-2021-3711<\/a><br \/>CVE-2021-3712<br \/><a href=\"https:\/\/access.redhat.com\/security\/cve\/cve-2021-3712\" target=\"_blank\" rel=\"noopener\">https:\/\/access.redhat.com\/security\/cve\/cve-2021-3712<\/a><\/p>\n<p>SUSE<br \/>CVE-2021-3711<br \/><a href=\"https:\/\/www.suse.com\/security\/cve\/CVE-2021-3711.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.suse.com\/security\/cve\/CVE-2021-3711.html<\/a><br \/>CVE-2021-3712<br \/><a href=\"https:\/\/www.suse.com\/security\/cve\/CVE-2021-3712.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.suse.com\/security\/cve\/CVE-2021-3712.html<\/a><\/p>\n<p>Debian<br \/>CVE-2021-3711<br \/><a href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2021-3711\" target=\"_blank\" rel=\"noopener\">https:\/\/security-tracker.debian.org\/tracker\/CVE-2021-3711<\/a><br \/>CVE-2021-3712<br \/><a href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2021-3712\" target=\"_blank\" rel=\"noopener\">https:\/\/security-tracker.debian.org\/tracker\/CVE-2021-3712<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I. \u6982\u89812021\u5e748\u670824\u65e5\uff08\u73fe\u5730\u6642\u9593\uff09\u3001OpenSSL Project\u304b\u3089OpenSSL\u306e\u8106\u5f31\u6027\uff08CVE-2021-3711\u3001CVE-2021-3712\uff09\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\u3002 \u91cd\u8981\u5ea6\u300cHigh\u300d\u3068\u3055\u308c\u308b\u8106\u5f31 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[45],"_links":{"self":[{"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/posts\/11513"}],"collection":[{"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/comments?post=11513"}],"version-history":[{"count":2,"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/posts\/11513\/revisions"}],"predecessor-version":[{"id":11515,"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/posts\/11513\/revisions\/11515"}],"wp:attachment":[{"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/media?parent=11513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/categories?post=11513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.csirt.dendai.ac.jp\/csirt\/wp-json\/wp\/v2\/tags?post=11513"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}