{"id":520,"date":"2025-08-16T10:41:47","date_gmt":"2025-08-16T02:41:47","guid":{"rendered":"https:\/\/hueil.top\/?p=520"},"modified":"2025-08-19T20:40:42","modified_gmt":"2025-08-19T12:40:42","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e5%8a%a0%e5%9b%balinux-%e7%b3%bb%e7%bb%9f%e9%ab%98%e5%8d%b1%e6%bc%8f%e6%b4%9e%ef%bc%88cve-2022-42919-%e7%ad%89%ef%bc%89%e4%bf%ae%e5%a4%8d%e5%ae%9e","status":"publish","type":"post","link":"https:\/\/hueil.top\/?p=520","title":{"rendered":"Ubuntu 22.04 \u670d\u52a1\u5668\u5b89\u5168\u52a0\u56fa\u4e0e\u9ad8\u5371\u6f0f\u6d1e\u4fee\u590d\u5b9e\u8df5\u6307\u5357"},"content":{"rendered":"\n

\u5728\u5b9d\u5854\u9762\u677f\u68c0\u6d4b\u51fa\u670d\u52a1\u5668\u5b58\u5728 57 \u4e2a\u5b89\u5168\u95ee\u9898\u540e\uff0c\u4e3a\u4fdd\u969c\u7cfb\u7edf\u5b89\u5168\uff0c\u9700\u5bf9\u5404\u7c7b\u6f0f\u6d1e\u53ca\u914d\u7f6e\u7f3a\u9677\u8fdb\u884c\u4fee\u590d\uff0c\u4ee5\u4e0b\u662f\u8be6\u7ec6\u64cd\u4f5c\u6b65\u9aa4\u3002<\/p>\n\n\n\n

\u4e00\u3001\u3010CVE-2022-42919\u3011Python \u7248\u672c\u5b89\u5168\u6f0f\u6d1e\u4fee\u590d<\/h1>\n\n\n\n

\u95ee\u9898\u6210\u56e0<\/h2>\n\n\n\n

\u7cfb\u7edf\u4e2d python3.10-3.10.4-3<\/code> \u7248\u672c\u4f4e\u4e8e\u5b89\u5168\u7248\u672c 3.10.6-1~22.04.1<\/code>\uff0c\u5b58\u5728\u5b89\u5168\u98ce\u9669\u3002<\/p>\n\n\n\n

\u4fee\u590d\u6b65\u9aa4<\/h2>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
    \n
  1. \u67e5\u770b\u7cfb\u7edf\u4e0e Python \u7248\u672c\u4fe1\u606f<\/strong>\n
      \n
    • \u6267\u884c lsb_release -a<\/code> \u67e5\u770b\u7cfb\u7edf\u53d1\u884c\u7248\u672c\u4fe1\u606f\u3002<\/li>\n\n\n\n
    • \u6267\u884c python3.10 -V<\/code> \u67e5\u770b Python 3.10 \u5f53\u524d\u7248\u672c\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • \u66f4\u65b0\u8f6f\u4ef6\u6e90<\/strong>
      \u5728\u7ec8\u7aef\u6267\u884c sudo apt update<\/code>\uff0c\u66f4\u65b0\u7cfb\u7edf\u8f6f\u4ef6\u6e90\u5217\u8868\uff0c\u83b7\u53d6\u6700\u65b0\u8f6f\u4ef6\u5305\u4fe1\u606f\u3002<\/li>\n\n\n\n
    • \u5347\u7ea7 Python 3.10<\/strong>
      \u6267\u884c sudo apt upgrade python3.10<\/code>\uff0c\u7cfb\u7edf\u63d0\u793a\u5347\u7ea7\u76f8\u5173\u8f6f\u4ef6\u5305\u53ca\u4f9d\u8d56\u65f6\uff0c\u8f93\u5165 Y<\/code> \u5e76\u56de\u8f66\u786e\u8ba4\u3002<\/li>\n\n\n\n
    • \u9a8c\u8bc1\u5347\u7ea7\u7ed3\u679c<\/strong>
      \u5347\u7ea7\u5b8c\u6210\u540e\uff0c\u518d\u6b21\u6267\u884c python3.10 -V<\/code>\uff0c\u786e\u8ba4\u7248\u672c\u5df2\u66f4\u65b0\u81f3 3.10.6~22.04.1<\/code> \u6216\u66f4\u9ad8\u7248\u672c\u3002<\/li>\n<\/ol>\n\n\n\n

      \u4e8c\u3001\u3010CVE-2023-0386\u3011Linux \u5185\u6838\u7248\u672c\u5b89\u5168\u6f0f\u6d1e\u4fee\u590d<\/h1>\n\n\n\n

      \u95ee\u9898\u6210\u56e0<\/h2>\n\n\n\n

      \u5f53\u524d\u5185\u6838\u7248\u672c 5.15.0-30-generic<\/code> \u5b58\u5728\u5b89\u5168\u98ce\u9669\uff0c\u9700\u5347\u7ea7\u81f3 5.15.0-70<\/code> \u53ca\u4ee5\u4e0a\u7248\u672c\u3002<\/p>\n\n\n\n

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

      \u4fee\u590d\u6b65\u9aa4<\/h2>\n\n\n\n

      1.\u786e\u8ba4\u5f53\u524d\u5185\u6838\u7248\u672c<\/strong>
      \u6267\u884c uname -r<\/code> \u67e5\u770b\u5f53\u524d Linux \u5185\u6838\u7248\u672c\u3002<\/p>\n\n\n\n

      2.\u67e5\u770b\u5e76\u5b89\u88c5\u5b89\u5168\u5185\u6838\u7248\u672c\uff08Ubuntu 22.04 \u7cfb\u7edf\uff09<\/strong><\/p>\n\n\n\n

        \n
      • \u6267\u884c apt install linux-image<\/code> \u67e5\u770b\u53ef\u5b89\u88c5\u7684\u5185\u6838\u7248\u672c\u53f7\u3002<\/li>\n<\/ul>\n\n\n\n
          \n
        • \u9009\u62e9\u9ad8\u4e8e 5.15.0-70<\/code> \u7684\u7248\u672c\u53f7\uff08\u5982\u5047\u8bbe\u4e3a 5.15.0-80<\/code>\uff09\uff0c\u6267\u884c sudo apt install linux-image-5.15.0-80<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n

          3.\u91cd\u542f\u670d\u52a1\u5668<\/strong>
          \u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6267\u884c sudo reboot<\/code> \u91cd\u542f\u670d\u52a1\u5668\u4f7f\u65b0\u5185\u6838\u751f\u6548\u3002<\/p>\n\n\n\n

          \u4e09\u3001SSH \u76f8\u5173\u5b89\u5168\u914d\u7f6e\u4f18\u5316<\/h1>\n\n\n\n

          \u672a\u4f7f\u7528\u5b89\u5168\u5957\u63a5\u5b57\u52a0\u5bc6\u8fdc\u7a0b\u7ba1\u7406 SSH<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim \/etc\/ssh\/sshd_config<\/code> \u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\uff0c\u6309 \/Protocol 2<\/code> \u67e5\u627e\uff0c\u82e5\u65e0\u76f8\u5173\u8bbe\u7f6e\uff0c\u6309\u4e0b i<\/code> \u952e\u8fdb\u5165\u7f16\u8f91\u6a21\u5f0f\uff0c\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0 Protocol 2<\/code>\u3002<\/p>\n\n\n\n

          2.\u6309\u4e0b Esc<\/code> \u952e\uff0c\u8f93\u5165 :wq<\/code> \u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n\n\n\n

          3.\u6267\u884c systemctl restart sshd<\/code> \u91cd\u542f\u8fdb\u7a0b\u4f7f\u914d\u7f6e\u751f\u6548\u3002<\/p>\n\n\n\n

          SSH \u7a7a\u95f2\u8d85\u65f6\u65f6\u95f4\u68c0\u6d4b<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim \/etc\/ssh\/sshd_config<\/code> \u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\uff0c\u5c06 ClientAliveInterval<\/code> \u8bbe\u7f6e\u4e3a 600 \u5230 900 \u4e4b\u95f4\uff08\u5982\u6539\u4e3a 900\uff09\u3002<\/p>\n\n\n\n

          2.\u4fdd\u5b58\u9000\u51fa\u540e\uff0c\u91cd\u542f sshd<\/code> \u670d\u52a1\uff08systemctl restart sshd<\/code>\uff09\u3002<\/p>\n\n\n\n

          SSH\u5bc6\u7801\u4fee\u6539\u6700\u5c0f\u95f4\u9694<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim \/etc\/login.defs<\/code> \u7f16\u8f91\u6587\u4ef6\uff0c\u5c06 PASS_MIN_DAYS<\/code> \u6539\u4e3a\u5927\u4e8e\u7b49\u4e8e 7\u3002<\/p>\n\n\n\n

          2.\u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n\n\n\n

          \u7981\u7528wheel\u7ec4\u5916\u7684\u7528\u6237su\u5207\u6362\u4e3aroot\u7528\u6237<\/h2>\n\n\n\n

          1.\u6267\u884c vim \/etc\/pam.d\/su<\/code> \u7f16\u8f91\u6587\u4ef6\uff0c\u5728\u672b\u5c3e\u6dfb\u52a0 auth required pam_wheel.so<\/code>\u3002<\/p>\n\n\n\n

          2.\u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n\n\n\n

          SSH \u767b\u5f55\u8d85\u65f6\u914d\u7f6e<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim \/etc\/ssh\/sshd_config<\/code> \u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\uff0c\u627e\u5230 LoginGraceTime<\/code> \u914d\u7f6e\u9879\uff0c\u53bb\u6389 #<\/code> \u6ce8\u91ca\u7b26\u53f7\uff0c\u5e76\u8bbe\u7f6e\u4e3a 60\u3002<\/p>\n\n\n\n

          2.\u4fdd\u5b58\u9000\u51fa\u540e\uff0c\u91cd\u542f sshd<\/code> \u670d\u52a1\u3002<\/p>\n\n\n\n

          \u56db\u3001\u547d\u4ee4\u884c\u4e0e\u7cfb\u7edf\u5b89\u5168\u914d\u7f6e<\/h1>\n\n\n\n

          \u672a\u914d\u7f6e\u547d\u4ee4\u884c\u8d85\u65f6\u9000\u51fa<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim \/etc\/profile<\/code> \u7f16\u8f91\u6587\u4ef6\uff0c\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0 export tmout=300<\/code>\uff08\u7b26\u5408\u7b49\u4fdd\u4e0d\u5927\u4e8e 600 \u79d2\u8981\u6c42\uff09\u3002<\/p>\n\n\n\n

          2.\u6267\u884c source \/etc\/profile<\/code> \u4f7f\u914d\u7f6e\u751f\u6548\u3002<\/p>\n\n\n\n

          \u68c0\u67e5\u91cd\u8981\u6587\u4ef6 suid \u548c sgid \u6743\u9650<\/h2>\n\n\n\n

          \u5b9d\u5854\u9762\u677f\u4f1a\u663e\u793a\u5b58\u5728\u95ee\u9898\u7684\u6587\u4ef6\uff0c\u5bf9\u8fd9\u4e9b\u6587\u4ef6\uff1a<\/p>\n\n\n\n

          1.\u6267\u884c chmod g-s \u3010\u6587\u4ef6\u540d\u3011<\/code> \u53bb\u9664 sgid \u6743\u9650\u3002<\/p>\n\n\n\n

          2.\u6267\u884c chmod u-s \u3010\u6587\u4ef6\u540d\u3011<\/code> \u53bb\u9664 suid \u6743\u9650\u3002<\/p>\n\n\n\n

          \u68c0\u67e5 ls \u548c rm \u547d\u4ee4\u522b\u540d\u8bbe\u7f6e<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim ~\/.bashrc<\/code> \u7f16\u8f91\u6587\u4ef6\uff0c\u6dfb\u52a0\u6216\u4fee\u6539 alias ls='ls -alh'<\/code> \u4ee5\u53ca alias rm='rm -i'<\/code>\u3002<\/p>\n\n\n\n

          2.\u6267\u884c source ~\/.bashrc<\/code> \u4f7f\u914d\u7f6e\u751f\u6548\u3002<\/p>\n\n\n\n

          \u5f00\u542f TCP – SYNcookie \u4fdd\u62a4<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6267\u884c vim \/etc\/sysctl.conf<\/code> \u7f16\u8f91\u6587\u4ef6\uff0c\u6dfb\u52a0 net.ipv4.tcp_syncookies=1<\/code>\u3002<\/p>\n\n\n\n

          2.\u6267\u884c sysctl -p<\/code> \u4f7f\u914d\u7f6e\u751f\u6548\u3002<\/p>\n\n\n\n

          \u9650\u5236\u6838\u5fc3\u8f6c\u50a8<\/h2>\n\n\n\n

          \u6267\u884c sysctl -w fs.suid_dumpable=0<\/code> \u9650\u5236\u6838\u5fc3\u8f6c\u50a8\u3002<\/p>\n\n\n\n

          \u68c0\u67e5\u662f\u5426\u5141\u8bb8\u7a7a\u5bc6\u7801 sudo \u63d0\u6743<\/h2>\n\n\n\n
          \"\"<\/div><\/figure>\n\n\n\n

          1.\u6253\u5f00 \/etc\/sudoers<\/code> \u6216 \/etc\/sudoers.d<\/code> \u4e0b\u7684\u6587\u4ef6\u3002<\/p>\n\n\n\n

          2.\u5220\u9664\u6216\u6ce8\u91ca\u5305\u542b NOPASSWD<\/code> \u6807\u8bb0\u7684\u884c\u3002<\/p>\n\n\n\n

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

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