{"id":8700,"date":"2024-07-05T09:15:19","date_gmt":"2024-07-05T00:15:19","guid":{"rendered":"https:\/\/www.prime-strategy.co.jp\/column\/?p=8700"},"modified":"2026-02-17T01:28:06","modified_gmt":"2026-02-16T16:28:06","slug":"regresshion","status":"publish","type":"post","link":"https:\/\/kusanagi.tokyo\/column\/archives\/column_8700","title":{"rendered":"regreSSHion\u3068\u3044\u3046OpenSSH\u306e\u8106\u5f31\u6027\u306b\u3064\u3044\u3066\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"regreSSHion%E3%81%A8%E3%81%AF%E4%BD%95%E3%81%8B\"><\/span>regreSSHion\u3068\u306f\u4f55\u304b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>regreSSHion <code>(CVE-2024-6387)<\/code>\u3068\u306f\u30012024\u5e746\u670820\u65e5\u306b<a href=\"https:\/\/www.qualys.com\/2024\/07\/01\/cve-2024-6387\/regresshion.txt\">Qualys\u793e\u306b\u3088\u3063\u3066\u5831\u544a\u3055\u308c\u305f<\/a>\u30011400\u4e07\u53f0\u4ee5\u4e0a\u306e\u30de\u30b7\u30f3\u306b\u304a\u3044\u3066\u3001<code>OpenSSH<\/code>\u3092\u7d4c\u7531\u3057\u305f\u4efb\u610f\u30b3\u30fc\u30c9\u5b9f\u884c\u304c\u53ef\u80fd\u306b\u306a\u308b\u8106\u5f31\u6027\u306e\u540d\u79f0\u3067\u3059\u3002\u8106\u5f31\u6027\u304c\u5b58\u5728\u3059\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u306f8.5p1\u4ee5\u4e0a\u30019.7p1\u4ee5\u4e0b\u3068\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5bfe\u7b56\u30d1\u30c3\u30c1\u304c\u9069\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u3082\u306e\u306b\u9650\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%9D%E3%82%82%E3%81%9D%E3%82%82OpenSSH%E3%81%A8%E3%81%AF\"><\/span>\u305d\u3082\u305d\u3082OpenSSH\u3068\u306f?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><code>OpenSSH<\/code>\u306f<code>OpenBSD<\/code>\u3068\u3044\u3046OS\u306e\u305f\u3081\u306b\u958b\u767a\u3055\u308c\u305fSSH\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u7d4c\u7531\u3057\u3066\u30de\u30b7\u30f3\u306e\u9060\u9694\u64cd\u4f5c\u3092\u53ef\u80fd\u306b\u3059\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u3059\u3002\u3057\u304b\u3057\u5b9f\u969b\u306b\u306f\u30dd\u30fc\u30bf\u30d6\u30eb\u7248\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u3001<code>Linux<\/code>\u7b49\u3067\u3082\u5b9f\u884c\u53ef\u80fd\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001<code>CentOS<\/code>\u3001<code>AlmaLinux<\/code>\u3084<code>Ubuntu<\/code>\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u591a\u6570\u306eOS\u306b\u304a\u3044\u3066\u3001\u6a19\u6e96\u3067\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"regreSSHion%E3%81%AE%E6%94%BB%E6%92%83%E9%9B%A3%E6%98%93%E5%BA%A6%E3%83%BB%E5%8D%B1%E9%99%BA%E5%BA%A6%E3%81%AF\"><\/span>regreSSHion\u306e\u653b\u6483\u96e3\u6613\u5ea6\u30fb\u5371\u967a\u5ea6\u306f?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3055\u3066\u3001\u3053\u306e\u8106\u5f31\u6027\u3067\u3059\u304c\u3001\u6210\u529f\u3059\u308b\u307e\u3067\u306e\u96e3\u6613\u5ea6\u306f\u9ad8\u3044\u3067\u3059\u3002\u305d\u308c\u306f\u3001OS\u306ebit\u6570\u306b\u3088\u308c\u3069\u3001\u6210\u529f\u307e\u3067\u5e73\u5747\u6570\u6642\u9593\uff5e1\u9031\u9593\u7a0b\u5ea6\u306f\u6642\u9593\u304c\u304b\u304b\u308a\u3001\u305d\u306e\u9593\u65ad\u7d9a\u7684\u306b\u653b\u6483\u3092\u53d7\u3051\u308b\u3053\u3068\u306b\u306a\u308b\u305f\u3081\u3001\u3053\u306e\u9593\u306b<code>OpenSSH<\/code>\u304c\u30af\u30e9\u30c3\u30b7\u30e5\u3057\u305f\u308a\u3001\u307e\u305f\u306f\u8ca0\u8377\u306a\u3069\u304b\u3089\u7570\u5e38\u3092\u691c\u77e5\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u305f\u3081\u3067\u3059(\u305f\u3060\u3057\u3001\u5e38\u6642\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3092\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u6c17\u4ed8\u304b\u305a\u653b\u6483\u304c\u901a\u3063\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u3059\u306e\u3067\u3001Zabbix\u306a\u3069\u3092\u5229\u7528\u3057\u3066\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059)\u3002\u3055\u3089\u306b\u6700\u8fd1\u3067\u306f<code>NX bit<\/code>(\u5b9f\u884c\u4e0d\u53ef\u5c5e\u6027)\u3084<code>ASLR<\/code>(\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u914d\u7f6e\u306e\u30e9\u30f3\u30c0\u30e0\u5316)\u3068\u3044\u3063\u305f\u9632\u8b77\u6280\u8853\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u96e3\u6613\u5ea6\u304c\u4e0a\u304c\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3068\u306f\u3044\u3048\u3001\u4e07\u304c\u4e00\u653b\u6483\u304c\u6210\u529f\u3057\u3066\u3057\u307e\u3046\u3068\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u3082\u306a\u3044\u306e\u3067\u3001\u9060\u9694\u3067\u8a8d\u8a3c\u3082\u306a\u3057\u306b<code>root<\/code>\u6a29\u9650\u3067\u4efb\u610f\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u3066\u3057\u307e\u3046\u81f4\u547d\u7684\u306a\u3082\u306e\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001<code>root<\/code>\u6a29\u9650\u3067\u4efb\u610f\u306e\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u5b9f\u8cea\u305d\u306e\u30de\u30b7\u30f3\u3067\u306a\u3093\u3067\u3082\u5b9f\u884c\u3067\u304d\u3066\u3057\u307e\u3044\u3001\u4e57\u3063\u53d6\u3089\u308c\u305f\u3082\u540c\u7136\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001CVE\u30b9\u30b3\u30a2\u306f<a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2024-6387\">10\u70b9\u4e2d8.1\u70b9\u3068\u3001\u9ad8\u3044\u6570\u5024\u3067\u8a55\u4fa1\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"regreSSHion%E3%81%AEKUSANAGI%E3%81%AB%E3%81%8A%E3%81%84%E3%81%A6%E3%81%AE%E5%AF%BE%E5%BF%9C\"><\/span>regreSSHion\u306eKUSANAGI\u306b\u304a\u3044\u3066\u306e\u5bfe\u5fdc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>KUSANAGI 9\u306e<code>AlmaLinux 8<\/code>\u7248\u3067\u306f8.0p1\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3002\u3088\u3063\u3066\u3001\u7279\u6bb5\u306e\u5bfe\u51e6\u306f\u4e0d\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001<code>AlmaLinux 9<\/code>\u3084<code>CentOS Stream 9<\/code>\u7248\u3067\u306f<strong>8.7p1\u306e\u672a\u4fee\u6b63\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5229\u7528\u3057\u3066\u3044\u305f\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3001\u5f71\u97ff\u3092\u53d7\u3051\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001<span style=\"text-decoration: underline;\"><code>AlmaLinux 9<\/code>\u3084<code>CentOS Stream 9<\/code>\u30d9\u30fc\u30b9\u306eKUSANAGI\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306b\u63d0\u793a\u3059\u308b\u5bfe\u5fdc\u3092\u3068\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059:<\/span><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>OpenSSH<\/code>\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/li>\n\n\n\n<li><code>LoginGraceTime<\/code>\u30920\u306b\u3059\u308b<\/li>\n\n\n\n<li><code>firewall-cmd<\/code>\u306a\u3069\u3092\u5229\u7528\u3057\u3001SSH\u30c7\u30fc\u30e2\u30f3\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u7aef\u672b\u3092\u5236\u9650\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"OpenSSH%E3%81%AE%E3%82%A2%E3%83%83%E3%83%97%E3%83%87%E3%83%BC%E3%83%88\"><\/span>OpenSSH\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u307e\u305a\u30011\u306e<code>OpenSSH<\/code>\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u304c\u3001\u3053\u308c\u306f<code>AlmaLinux 9<\/code>\u306b\u304a\u3044\u3066\u306f2024\u5e747\u67082\u65e5\u73fe\u5728\u3059\u3067\u306b\u5229\u7528\u53ef\u80fd\u3068\u306a\u3063\u3066\u304a\u308a\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3050\u306b\u5bfe\u51e6\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo dnf upgrade openssh<\/code><\/pre>\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001<code>openssh-8.7p1-38<\/code>\u304b\u3089regreSSHion\u95a2\u9023\u5bfe\u7b56\u306e\u30d1\u30c3\u30c1\u304c\u9069\u7528\u3055\u308c\u305f<code>openssh-8.7p1-38.alma.2<\/code>\u3078\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3055\u308c\u3001\u5bfe\u51e6\u304c\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u3001<code>CentOS Stream 9<\/code>\u306b\u304a\u3044\u3066\u306f\u30012024\u5e747\u67082\u65e5\u73fe\u5728\u3001\u307e\u3060\u5bfe\u7b56\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<br>\u3064\u3044\u3066\u306f\u3001\u63d0\u4f9b\u307e\u3067\u306e\u9593\u3001\u9078\u629e\u80a22\u3082\u3057\u304f\u306f3\u306e\u5229\u7528\u3092\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"LoginGraceTime%E3%82%920%E3%81%AB%E3%81%99%E3%82%8B\"><\/span>LoginGraceTime\u30920\u306b\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>2\u306e<code>LoginGraceTime<\/code>\u30920\u306b\u3059\u308b\u9078\u629e\u3092\u3057\u305f\u5834\u5408\u3001<code>\/etc\/ssh\/sshd_config<\/code>\u306b\u3066<code>LoginGraceTime<\/code>\u3092\u542b\u3080\u8a2d\u5b9a\u304c\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u691c\u7d22\u306e\u4e0a\u3001\u306a\u3055\u308c\u3066\u3044\u308c\u3070\u305d\u306e\u5024\u30920\u306b\u5909\u66f4\u3001\u306a\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u4ee5\u4e0b\u306e\u9805\u76ee\u3092\u8ffd\u8a18\u3057\u3001<code>sshd<\/code>\u3092\u518d\u8d77\u52d5\u3057\u307e\u3059:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LoginGraceTime 0<\/code><\/pre>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u3053\u306e\u5bfe\u5fdc\u306b\u306f\u5f31\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u3001DoS\u653b\u6483\u306b\u5f31\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>SSH\u30c7\u30fc\u30e2\u30f3\u3067\u306f\u3001\u53d7\u3051\u4ed8\u3051\u3089\u308c\u308b\u63a5\u7d9a\u6570\u306b\u4e0a\u9650\u304c\u3042\u308a\u307e\u3059\u3002\u4e0a\u9650\u306b\u3042\u305f\u308b\u3068\u3001\u4ed6\u306e\u63a5\u7d9a\u304c\u5207\u308c\u308b\u307e\u3067\u306f\u65b0\u898f\u63a5\u7d9a\u304c\u3067\u304d\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001<code>LoginGraceTime<\/code>\u30920\u306b\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u524d\u306e\u6bb5\u968e\u3067\u63a5\u7d9a\u3092\u5f35\u308a\u3063\u3071\u306a\u3057\u3067\u653e\u7f6e\u3057\u3066\u3044\u3066\u3082\u30b5\u30fc\u30d0\u5074\u3067\u306f\u81ea\u52d5\u7684\u306b\u5207\u65ad\u3092\u3057\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u305d\u308c\u306b\u3088\u308a\u3001\u672c\u5f53\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u305f\u3044\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u3067\u304d\u306a\u304f\u306a\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3067\u3059\u306e\u3067regreSSHion\u306b\u5bfe\u7b56\u3067\u304d\u308b\u307e\u3067\u66ab\u5b9a\u7684\u306b\u5229\u7528\u3059\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%A2%E3%82%AF%E3%82%BB%E3%82%B9%E3%81%A7%E3%81%8D%E3%82%8B%E7%AB%AF%E6%9C%AB%E3%82%92%E5%88%B6%E9%99%90%E3%81%99%E3%82%8B\"><\/span>\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u7aef\u672b\u3092\u5236\u9650\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6700\u5f8c\u306b\u30013\u306e<code>firewall-cmd<\/code>\u306a\u3069\u3092\u5229\u7528\u3057\u3001SSH\u30c7\u30fc\u30e2\u30f3\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u7aef\u672b\u3092\u5236\u9650\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u3001\u4fe1\u983c\u3055\u308c\u305f\u7aef\u672b\u304b\u3089\u306e\u307fSSH\u30c7\u30fc\u30e2\u30f3\u3078\u306e\u63a5\u7d9a\u3092\u8a31\u53ef\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u305d\u308c\u306b\u3088\u3063\u3066\u3001\u3053\u306e\u8106\u5f31\u6027\u304c\u60aa\u7528\u3055\u308c\u305f\u308a\u3001\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3\u3055\u308c\u308b\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u3053\u306e\u65b9\u6cd5\u306b\u3082\u5f31\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u5916\u90e8\u304b\u3089\u30a2\u30af\u30bb\u30b9\u304c\u3057\u306b\u304f\u304f\u306a\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u56fa\u5b9aIP\u3084<code>VPN<\/code>\u306a\u3069\u3092\u4f7f\u3044\u3001\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308c\u3070\u78ba\u304b\u306b\u5236\u9650\u306f\u3057\u3084\u3059\u3044\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u3089\u3092\u4f7f\u308f\u305a\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u3053\u306e\u65b9\u6cd5\u306f\u4f7f\u3044\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u5bfe\u5fdc\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>IP\u30a2\u30c9\u30ec\u30b9\u306f<code>192.0.2.1<\/code>\u3001CIDR\u306f<code>32<\/code>\u3068\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u3061\u3089\u306f\u305d\u308c\u305e\u308c\u304a\u6301\u3061\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3084\u6240\u6709\u7bc4\u56f2\u306b\u8aad\u307f\u66ff\u3048\u3066\u304f\u3060\u3055\u3044\u3002<br>\u306a\u304a\u3001SSH\u7d4c\u7531\u3067\u4e0d\u7528\u610f\u306b\u5b9f\u884c\u3059\u308b\u3068\u30a2\u30af\u30bb\u30b9\u4e0d\u80fd\u306b\u306a\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo dnf install firewalld\nsudo systemctl enable --now firewalld\nsudo firewall-cmd --permanent --new-zone=ssh-allow\nsudo firewall-cmd --permanent --zone=ssh-allow --add-source=192.0.2.1\/32\nsudo firewall-cmd --permanent --zone=public --remove-service=ssh\nsudo firewall-cmd --reload<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"regreSSHion%E3%81%AF%E3%81%AA%E3%81%9C%E8%B5%B7%E3%81%8D%E3%81%9F%E3%81%AE%E3%81%8B%E3%80%82%E3%81%AA%E3%81%9C%E6%94%BB%E6%92%83%E3%81%8C%E6%88%90%E7%AB%8B%E3%81%99%E3%82%8B%E3%81%AE%E3%81%8B%E3%80%82\"><\/span>regreSSHion\u306f\u306a\u305c\u8d77\u304d\u305f\u306e\u304b\u3002\u306a\u305c\u653b\u6483\u304c\u6210\u7acb\u3059\u308b\u306e\u304b\u3002<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u306a\u305c\u3053\u306e\u8106\u5f31\u6027\u304c\u767a\u751f\u3057\u305f\u306e\u304b\u3068\u3044\u3046\u3068\u3001\u5927\u304d\u304f\u5206\u3051\u30662\u3064\u3042\u308a\u307e\u3059\u30021\u3064\u306f\u3001<code>Linux<\/code>\u3067\u5229\u7528\u3059\u308b<code>glibc (GNU C Library)<\/code>\u3068\u3044\u3046\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4ed5\u69d8\u306b\u3088\u308b\u3068\u3053\u308d\u3002\u3082\u3046\u4e00\u3064\u306f\u3001\u3046\u3063\u304b\u308a\u30df\u30b9\u3068\u3044\u3046\u3053\u3068\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"glibc%E3%81%AE%E4%BB%95%E6%A7%98\"><\/span>glibc\u306e\u4ed5\u69d8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>SSH\u30ed\u30b0\u30a4\u30f3\u304c\u4e00\u5b9a\u306e\u6642\u9593\u306b\u5b8c\u4e86\u3057\u306a\u3044\u5834\u5408\u3001<code>SIGALRM<\/code>\u30b7\u30b0\u30ca\u30eb\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u308c\u306e\u30cf\u30f3\u30c9\u30e9\u3068\u3057\u3066\u3001<code>sigdie<\/code>\u95a2\u6570\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<code>SIGALRM<\/code>\u306f\u3001<code>glibc<\/code>\u306e\u4ed5\u69d8\u4e0a\u3001\u975e\u540c\u671f\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u305d\u3057\u3066\u3001<code>sigdie<\/code>\u306e\u4e2d\u3067\u306f<code>syslog<\/code>\u3068\u3044\u3046\u30ed\u30ae\u30f3\u30b0\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u3002\u3067\u3059\u304c\u3001\u3053\u306e\u30ed\u30ac\u30fc\u306f<a href=\"https:\/\/www.gnu.org\/software\/libc\/manual\/html_node\/syslog_003b-vsyslog.html\">\u975e\u540c\u671f\u306b\u5b9f\u884c\u3055\u308c\u3046\u308b\u3082\u306e\u3067\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u5b89\u5168\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/a>\u3002\u3053\u308c\u3092<code>AS-Unsafe (Async-Signal Unsafe - \u975e\u540c\u671f\u30b7\u30b0\u30ca\u30eb\u5b89\u5168\u3067\u306f\u306a\u3044)<\/code>\u3068\u3044\u3044\u307e\u3059\u3002<code>AS-Unsafe<\/code>\u306e\u95a2\u6570\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u306e\u306b\u300c\u30b7\u30b0\u30ca\u30eb\u30cf\u30f3\u30c9\u30e9\u306e\u7af6\u5408\u72b6\u614b\u300d\u304c\u8d77\u304d\u305f\u7d50\u679c\u3001\u30d2\u30fc\u30d7\u304c\u7834\u58ca\u3055\u308c(\u30d0\u30c3\u30d5\u30a1\u30aa\u30fc\u30d0\u30fc\u30e9\u30f3)\u3001\u653b\u6483\u304c\u6210\u7acb\u3059\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u3001<code>CentOS Stream<\/code>\u306e<code>GitLab<\/code>\u3067\u306f\u3001\u3053\u306e<code>syslog<\/code>\u306b\u8a18\u9332\u3059\u308b\u90e8\u5206\u3092\u30d0\u30a4\u30d1\u30b9\u3059\u308b\u30d1\u30c3\u30c1\u304c<a href=\"https:\/\/gitlab.com\/redhat\/centos-stream\/rpms\/openssh\/-\/merge_requests\/77\">\u63d0\u6848<\/a>\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u306a\u304a\u3001\u3053\u306e\u30d1\u30c3\u30c1\u306f<code>AlmaLinux<\/code>\u3067\u306f\u3059\u3067\u306b\u53d6\u308a\u5165\u308c\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001<code>OpenSSH<\/code>\u3067\u3082\u4eca\u5f8c\u306f\u30b7\u30b0\u30ca\u30eb\u30cf\u30f3\u30c9\u30e9\u3092\u5229\u7528\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u30ea\u30b9\u30ca\u30fc\u3067\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u3001\u975e\u540c\u671f\u51e6\u7406\u3092\u56de\u907f\u3059\u308b\u3088\u3046<a href=\"https:\/\/github.com\/openssh\/openssh-portable\/commit\/81c1099d22b81ebfd20a334ce986c4f753b0db29\">\u6539\u5584\u3055\u308c\u307e\u3057\u305f<\/a>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%86%E3%81%A3%E3%81%8B%E3%82%8A%E3%83%9F%E3%82%B9\"><\/span>\u3046\u3063\u304b\u308a\u30df\u30b9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u305d\u3057\u3066\u3001\u5b9f\u306f\u307e\u3063\u305f\u304f\u540c\u3058\u8106\u5f31\u6027\u304c2006\u5e74\u306e<code>OpenSSH 4.4p1<\/code>\u306b\u304a\u3044\u3066\u3082\u767a\u899a\u3057\u3066\u304a\u308a(<code>CVE-2006-5051<\/code>)\u3001\u305d\u306e\u6642\u70b9\u3067\u4fee\u6b63(<code>#ifdef DO_LOG_SAFE_IN_SIGHAND<\/code>\u304c\u8ffd\u52a0)\u3055\u308c\u3066\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u305d\u306e\u5f8c2020\u5e74\u306b\u5165\u308a\u3001<a href=\"https:\/\/github.com\/openssh\/openssh-portable\/commit\/752250caabda3dd24635503c4cd689b32a650794#diff-cac4c5e540bb96b16908efb139929424aa8065d1acaa0af3791e19aa775bbf42L175\">OpenSSH\u3092\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3057\u305f\u969b\u306b\u5f53\u8a72\u306e\u5b89\u5168\u6a5f\u69cb\u3092\u3046\u3063\u304b\u308a\u53d6\u308a\u9664\u3044\u3066\u3057\u307e\u3063\u305f<\/a>\u304c\u3086\u3048\u306b\u518d\u5ea6\u540c\u3058\u8106\u5f31\u6027\u3092\u751f\u3093\u3060(<code>regreSSHion<\/code>\u306e\u540d\u79f0\u306e\u7531\u6765\u3068\u3082\u306a\u3063\u3066\u3044\u308b)\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u306e\u307e\u3068\u3081\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>regreSSHion\u306f\u30012006\u5e74\u306b\u4fee\u6b63\u3057\u305f\u8106\u5f31\u6027\u304c2020\u5e74\u306b\u56de\u5e30\u3057\u30014\u5e74\u5f8c\u306b\u767a\u899a\u3057\u305f\u3082\u306e<\/li>\n\n\n\n<li>root\u6a29\u9650\u3067\u4efb\u610f\u306e\u30b3\u30fc\u30c9\u304c\u9060\u9694\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\n<ul class=\"wp-block-list\">\n<li>CVE\u30b9\u30b3\u30a2\u306f8.1\u3068\u9ad8\u3081<\/li>\n\n\n\n<li>\u3060\u304c\u3001\u767a\u751f\u78ba\u7387\u306f\u4f4e\u3044(\u96e3\u6613\u5ea6\u304c\u9ad8\u304f\u3001\u6642\u9593\u3092\u8981\u3059\u308b)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>AlmaLinux 9<\/code>\u3084<code>CentOS Stream 9<\/code>\u30d9\u30fc\u30b9\u306eKUSANAGI\u3067\u306f\u5f71\u97ff\u3092\u53d7\u3051\u308b\n<ul class=\"wp-block-list\">\n<li>2024\u5e747\u67082\u65e5\u73fe\u5728\u3001AlmaLinux 9\u3067\u306f\u4fee\u6b63\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u3059\u3067\u306b\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b<\/li>\n\n\n\n<li>CentOS Stream 9\u3067\u306f\u63d0\u4f9b\u5f85\u3061<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>regreSSHion\u3078\u306e\u5bfe\u5fdc\u7b56\u306f\u5927\u304d\u304f\u5206\u3051\u30663\u3064\u3042\u308b\n<ul 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content=\"regreSSHion\u3068\u3044\u3046OpenSSH\u306e\u8106\u5f31\u6027\u306b\u3064\u3044\u3066\u5fb9\u5e95\u89e3\u8aac - KUSANAGI Tech Column\" \/>\n<meta property=\"og:description\" content=\"\u5f53\u8a18\u4e8b\u3067\u306f\u3001OpenSSH\u3067\u767a\u898b\u3055\u308c\u305f\u8106\u5f31\u6027\u3067\u3042\u308b&quot;regreSSHion&quot;\u306b\u3064\u3044\u3066\u306e\u8a73\u7d30\u3001\u304a\u3088\u3073\u5bfe\u51e6\u65b9\u6cd5\u306a\u3069\u306b\u3064\u3044\u3066\u5fb9\u5e95\u89e3\u8aac\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kusanagi.tokyo\/column\/archives\/column_8700\" \/>\n<meta property=\"og:site_name\" content=\"KUSANAGI Tech Column\" \/>\n<meta property=\"article:published_time\" content=\"2024-07-05T00:15:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-16T16:28:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kusanagi.tokyo\/column\/wp-content\/uploads\/2024\/07\/regresshion-tc-ec-01.jpeg.jpg\" \/>\n\t<meta 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