{"id":327,"date":"2025-02-06T14:32:02","date_gmt":"2025-02-06T06:32:02","guid":{"rendered":"https:\/\/www.tysql.com\/?p=327"},"modified":"2025-04-03T16:23:07","modified_gmt":"2025-04-03T08:23:07","slug":"centeros-7%e5%8d%87%e7%ba%a7%e4%bd%8e%e7%89%88%e6%9c%ac%e7%9a%84openssh%e5%88%b09-3p2%e7%9a%84%e9%ab%98%e7%89%88%e6%9c%ac%e8%a7%a3%e5%86%b3%e8%bf%9c%e7%a8%8b%e4%bb%a3%e7%a0%81%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/www.tysql.com\/index.php\/2025\/02\/06\/centeros-7%e5%8d%87%e7%ba%a7%e4%bd%8e%e7%89%88%e6%9c%ac%e7%9a%84openssh%e5%88%b09-3p2%e7%9a%84%e9%ab%98%e7%89%88%e6%9c%ac%e8%a7%a3%e5%86%b3%e8%bf%9c%e7%a8%8b%e4%bb%a3%e7%a0%81%e6%89%a7%e8%a1%8c\/","title":{"rendered":"CenterOS-7\u5347\u7ea7\u4f4e\u7248\u672c\u7684OpenSSH\u52309.3p2\u7684\u9ad8\u7248\u672c,\u89e3\u51b3\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e(CVE-2023-38408)\u6f0f\u6d1e"},"content":{"rendered":"\n
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\u4e00\u3001\u4e3b\u8981\u6559\u7a0b:<\/h4>\n\n\n\n

\u89e3\u51b3CVE-2023-38408\u6f0f\u6d1e\uff0c\u5b9e\u6d4b\u6709\u6548<\/a><\/p>\n<\/div>\n\n\n\n

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

\u9047\u5230\u7684\u4e00\u4e9b\u62a5\u9519\u89e3\u51b3\u529e\u6cd5:(\u8fd9\u4e9b\u6309\u7167\u4e0a\u9762\u7684\u4e3b\u6559\u7a0b\u5e94\u8be5\u4e0d\u4f1a\u51fa\u73b0,\u8fd9\u662f\u6309\u7167\u5176\u4ed6\u6559\u7a0b\u624d\u4f1a\u51fa\u73b0,\u4f46\u662f\u662f\u6709\u6548\u7684\u89e3\u51b3\u529e\u6cd5\u4e5f\u4e00\u5e76\u8bb0\u5f55)<\/p>\n\n\n\n

1.\u62a5\u9519\u5185\u5bb9:\n\tOperating system: x86_64-whatever-linux2\n  \tYou need Perl 5\n  \t\u89e3\u51b3\u6559\u7a0b:https:\/\/blog.csdn.net\/qq_44534541\/article\/details\/124667091\n2.\u62a5\u9519\u5185\u5bb9:\n    crypto\/comp\/c_zlib.c:35:19: fatal error: zlib.h: No such file or directory\n    \u6267\u884c:sudo yum install zlib-devel\n3.\u62a5\u9519\u5185\u5bb9:\n    Use which C compiler? [cc]  \n    .\/trygcc:\u884c10: cc: \u672a\u627e\u5230\u547d\u4ee4\n    Uh-oh, the C compiler 'cc' doesn't seem to be working.\n    .\/trygcc:\u884c25: gcc: \u672a\u627e\u5230\u547d\u4ee4\n    .\/checkcc:\u884c10: cc: \u672a\u627e\u5230\u547d\u4ee4\n  \t\u89e3\u51b3\u65b9\u6cd5\uff1ayum install gcc\n4.\u62a5\u9519\u5185\u5bb9:\n\t\u201cconfigure: error: *** working libcrypto not found, check config.log\u201d\n    \u89e3\u51b3\u65b9\u6cd5\uff1ahttps:\/\/www.cnblogs.com\/wholj\/p\/10944407.html<\/pre><\/div>\n\n\n\n
\u989d\u5916\u8bb0\u5f55:\u56e0\u4e3a\u8981\u7528\u5230yum,\u6709\u65f6\u5019yum\u662f\u4e0d\u597d\u4f7f\u7684<\/p>\n\n\n\n
\u66f4\u65b0yum \n1. \u5907\u4efd\u5f53\u524d\u7684YUM\u6e90\u914d\u7f6e\u6587\u4ef6\nsudo cp -r \/etc\/yum.repos.d \/etc\/yum.repos.d.bak\n3. \u4e0b\u8f7d\u65b0\u7684YUM\u6e90\u914d\u7f6e\u6587\u4ef6\uff08\u4ee5\u963f\u91cc\u4e91YUM\u6e90\u4e3a\u4f8b\uff09\nsudo curl -o \/etc\/yum.repos.d\/CentOS-Base.repo http:\/\/mirrors.aliyun.com\/repo\/Centos-7.repo\n4. \u6e05\u7406YUM\u7f13\u5b58\u5e76\u751f\u6210\u65b0\u7684\u7f13\u5b58\nsudo yum clean all\nsudo yum makecache<\/pre><\/div>\n\n\n\n
\u5feb\u6377\u590d\u5236<\/p>\n\n\n\n
# \u5b89\u88c5vim\nyum install vim  \n# \u67e5\u770bssh\u7248\u672c\nssh -V\nopenssl version<\/pre><\/div>\n\n\n\n
\u4e8c\u3001\u5b89\u88c5\u5b8c\u540e\u56e0\u4e3aSELinux\u5b89\u5168\u7b56\u7565\u95ee\u9898\u53ef\u80fd\u5bfc\u81f4\u65e0\u6cd5\u8fde\u63a5(\u5b89\u88c5\u5b8c\u6210\u540e\u8bb0\u5f97\u5148\u91cd\u65b0\u6253\u5f00\u4e00\u4e2a\u7a97\u53e3\u8fde\u63a5\u6210\u529f\u5728\u5173\u95ed\u5f53\u524d,\u5426\u5219\u53ef\u80fd\u518d\u4e5f\u8fde\u4e0d\u4e0a\u4e86):<\/h4>\n\n\n\n
1. \u4e34\u65f6\u89e3\u51b3\uff08\u4e0d\u63a8\u8350\u957f\u671f\u4f7f\u7528\uff09<\/h5>\n\n\n\n
# \u53ef\u4ee5\u5c06 SELinux \u8bbe\u7f6e\u4e3a permissive \u6a21\u5f0f\uff0c\u8fd9\u6837\u5728\u7cfb\u7edf\u8fd0\u884c\u671f\u95f4 SELinux \u4e0d\u4f1a\u5f3a\u5236\u6267\u884c\u7b56\u7565\nsudo setenforce 0\n# \u518d\u6b21\u786e\u8ba4\u662f\u5426\u662f SELinux\u963b\u6b62SSH \u76f8\u5173\u64cd\u4f5c\n# \u4e34\u65f6\u5141\u8bb8\u6240\u6709\u4e0e SSH \u670d\u52a1\u76f8\u5173\u7684\u64cd\u4f5c\uff0c\u4ee5\u786e\u5b9a\u662f\u5426\u662f SELinux \u7b56\u7565\u9650\u5236\u5bfc\u81f4\u7684\u95ee\u9898\u3002\nsudo semanage permissive -a sshd_t\n# \u79fb\u9664\u5141\u8bb8\u6a21\u5f0f\nsudo semanage permissive -d sshd_t<\/pre><\/div>\n\n\n\n
2.\u6c38\u4e45\u89e3\u51b3<\/h5>\n\n\n\n
\n
 1.\u521b\u5efa\u7b56\u7565\u6a21\u5757\u6587\u4ef6<\/p>\n<\/div><\/div>\n\n\n\n
vi sshd_custom_refined.te\n# \u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a sshd_custom_refined.te \u7684\u6587\u4ef6\uff0c\u5e76\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a\nmodule sshd_custom_refined 1.0;\n\nrequire {\n    type sshd_t;\n    type shadow_t;\n    class file { read getattr open };\n}\n\nallow sshd_t shadow_t:file { read getattr open };<\/pre><\/div>\n\n\n\n
2.\u521b\u5efa\u7b56\u7565\u6a21\u5757\u6587\u4ef6<\/p>\n\n\n\n
# \u5982\u679c\u6267\u884c\u4e0b\u9762\u51fa\u73b0 -bash: checkmodule: \u672a\u627e\u5230\u547d\u4ee4\nsudo yum install policycoreutils-python\n\n# \u7f16\u8bd1\u7b56\u7565\u6a21\u5757(\u6b64\u547d\u4ee4\u4f1a\u5bf9 sshd_custom_refined.te \u6587\u4ef6\u8fdb\u884c\u8bed\u6cd5\u68c0\u67e5\u5e76\u751f\u6210\u4e00\u4e2a\u4e2d\u95f4\u6a21\u5757\u6587\u4ef6)\ncheckmodule -M -m -o sshd_custom_refined.mod sshd_custom_refined.te\n\n# \u6253\u5305\u7b56\u7565\u6a21\u5757(\u8be5\u547d\u4ee4\u4f1a\u5c06\u4e2d\u95f4\u6a21\u5757\u6587\u4ef6\u6253\u5305\u6210\u6700\u7ec8\u53ef\u52a0\u8f7d\u7684\u7b56\u7565\u6a21\u5757\u6587\u4ef6 sshd_custom_refined.pp)\nsemodule_package -o sshd_custom_refined.pp -m sshd_custom_refined.mod\n# \u52a0\u8f7d\u7b56\u7565\u6a21\u5757\nsudo semodule -i sshd_custom_refined.pp\n\n"""\u4e0b\u8fb9\u4e0d\u662f\u5fc5\u505a\u6b65\u9aa4""\n# \u9a8c\u8bc1\u7b56\u7565\u6548\u679c(\u8bb0\u5f97\u6539\u56de\u5f3a\u5236\u6a21\u5f0f,\u524d\u9762\u7684 \u4e34\u65f6\u5141\u8bb8\u6240\u6709\u4e0e SSH \u670d\u52a1\u76f8\u5173\u7684\u64cd\u4f5c \u4e5f\u5173\u95ed\u6389)\nsudo setenforce 1\nsudo semanage permissive -d sshd_t\n\n# \u79fb\u9664\u65e7\u7684\u7b56\u7565\u6a21\u5757\uff08\u5982\u679c\u5df2\u5b89\u88c5\uff09\nsudo semodule -r sshd_custom_refined\n# \u5b89\u88c5\u65b0\u7684\u7b56\u7565\u6a21\u5757\nsudo semodule -i sshd_custom_refined.pp\n# \u786e\u8ba4\u6a21\u5757\u662f\u5426\u5df2\u5b89\u88c5(\u5982\u679c\u6267\u884c\u8be5\u547d\u4ee4\u540e\u6ca1\u6709\u4efb\u4f55\u8f93\u51fa\uff0c\u90a3\u5c31\u8bf4\u660e sshd_custom_refined \u7b56\u7565\u6a21\u5757\u786e\u5b9e\u6ca1\u6709\u5b89\u88c5)\nsudo semodule -l | grep sshd_custom_refined\n\n<\/pre><\/div>\n\n\n\n
\u4e8c\u3001\u5347\u7ea7\u5b8c\u6210\u540eroot\u4f1a\u65e0\u6cd5\u767b\u5f55\u7684\u89e3\u51b3\u529e\u6cd5<\/h4>\n\n\n\n
# \u6253\u5f00 sshd \u914d\u7f6e\u6587\u4ef6\nvi \/etc\/ssh\/sshd_config\n# \u5728\u6700\u540e\u6dfb\u52a0\u5982\u4e0b\u5185\u5bb9\n\n# \u5141\u8bb8 root \u7528\u6237\u901a\u8fc7 SSH \u8fdc\u7a0b\u767b\u5f55\nPermitRootLogin yes\n# \u542f\u7528 SSH \u516c\u94a5\u8ba4\u8bc1\u65b9\u5f0f\nPubkeyAuthentication yes\n# \u542f\u7528 SSH \u5bc6\u7801\u8ba4\u8bc1\u65b9\u5f0f\nPasswordAuthentication yes\n\n# \u6216\u8005\u6dfb\u52a0\u65b0\u7684\u666e\u901a\u7528\u6237(myUsername\u66ff\u6362\u6210\u7528\u6237\u540d,myPassword\u66ff\u6362\u6210\u5bc6\u7801)\nsudo useradd myUsername\nsudo passwd myPassword\n<\/pre><\/div>\n\n\n\n
\u4e09\u3001\u5b89\u88c5openssl\u5934\u5e93\u6587\u4ef6\u4e0d\u4e00\u81f4\u7684\u95ee\u9898<\/p>\n\n\n\n
# \u5f53\u6267\u884copenssl version \u63d0\u793a(\u6b63\u5e38\u4e0d\u5e94\u8be5\u663e\u793aLibrary)\nOpenSSL 1.1.1u  30 May 2023 (Library: OpenSSL 1.1.1o  3 May 2022)\n#\u89e3\u51b3\u529e\u6cd5\n#\u4fee\u6539 \/etc\/profile \u6587\u4ef6\uff08\u9488\u5bf9\u6240\u6709\u7528\u6237\uff09\n#  1. \u6253\u5f00 \/etc\/profile \u6587\u4ef6\nsudo vim \/etc\/profile\n#  2. \u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u4e24\u884c\uff1a\nexport LD_LIBRARY_PATH=\/usr\/local\/openssl\/lib:$LD_LIBRARY_PATH\nexport PATH=\/usr\/local\/openssl\/bin:$PATH\n#  3. \u914d\u7f6e\u7acb\u5373\u751f\u6548\uff0c\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\nsource \/etc\/profile<\/pre><\/div>\n\n\n\n
\u4e09\u3001\u540e\u7eed\u53c8\u5347\u7ea7\u5230\u4e869.8p1,\u53ea\u9700\u8981\u4e0b\u8f7d\u7684\u5730\u5740\u6362\u62109.8p1\u5c31\u884c\u4e86<\/p>\n\n\n\n
wget  https:\/\/cdn.openbsd.org\/pub\/OpenBSD\/OpenSSH\/portable\/openssh-9.8p1.tar.gz<\/pre><\/div>\n\n\n\n
<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u3001\u4e3b\u8981\u6559\u7a0b: \u89e3\u51b3CVE-2023-38408\u6f0f\u6d1e\uff0c\u5b9e\u6d4b\u6709\u6548 \u9047\u5230\u7684\u4e00\u4e9b\u62a5\u9519\u89e3\u51b3\u529e\u6cd5:(\u8fd9\u4e9b\u6309\u7167\u4e0a\u9762\u7684\u4e3b\u6559\u7a0b … \u7ee7\u7eed\u9605\u8bfbCenterOS-7\u5347\u7ea7\u4f4e\u7248\u672c\u7684OpenSSH\u52309.3p2\u7684\u9ad8\u7248\u672c,\u89e3\u51b3\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e(CVE-2023-38408)\u6f0f\u6d1e<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-327","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/posts\/327","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/comments?post=327"}],"version-history":[{"count":20,"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/posts\/327\/revisions"}],"predecessor-version":[{"id":375,"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/posts\/327\/revisions\/375"}],"wp:attachment":[{"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/media?parent=327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/categories?post=327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tysql.com\/index.php\/wp-json\/wp\/v2\/tags?post=327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}