{"id":66395,"date":"2024-10-14T17:09:15","date_gmt":"2024-10-14T09:09:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66395\/"},"modified":"2024-10-14T17:09:15","modified_gmt":"2024-10-14T09:09:15","slug":"mssql%e6%b3%a8%e5%85%a5%e6%94%bb%e6%93%8a%e7%b9%9e%e9%81%8ewaf%e7%9a%84%e5%af%a6%e8%b8%90%e6%8a%80%e5%b7%a7%ef%bc%88mssql%e6%b3%a8%e5%85%a5%e9%81%8ewaf%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66395\/","title":{"rendered":"MSSQL\u6ce8\u5165\u653b\u64ca\u7e5e\u904eWAF\u7684\u5be6\u8e10\u6280\u5de7\uff08mssql\u6ce8\u5165\u904ewaf\uff09"},"content":{"rendered":"

MSSQL\u6ce8\u5165\u653b\u64ca\u7e5e\u904eWAF\u7684\u5be6\u8e10\u6280\u5de7<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u5b89\u5168\u74b0\u5883\u4e2d\uff0cMSSQL\u6ce8\u5165\u653b\u64ca\u4ecd\u7136\u662f\u6700\u5e38\u898b\u7684\u653b\u64ca\u65b9\u5f0f\u4e4b\u4e00\u3002\u9019\u7a2e\u653b\u64ca\u5229\u7528\u4e86\u61c9\u7528\u7a0b\u5e8f\u5c0d\u7528\u6236\u8f38\u5165\u7684\u8655\u7406\u4e0d\u7576\uff0c\u5f9e\u800c\u4f7f\u653b\u64ca\u8005\u80fd\u5920\u57f7\u884c\u4efb\u610f\u7684SQL\u67e5\u8a62\u3002\u96a8\u8457Web\u61c9\u7528\u9632\u706b\u7246\uff08WAF\uff09\u7684\u666e\u53ca\uff0c\u653b\u64ca\u8005\u9700\u8981\u5c0b\u627e\u65b0\u7684\u65b9\u6cd5\u4f86\u7e5e\u904e\u9019\u4e9b\u9632\u8b77\u63aa\u65bd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9bMSSQL\u6ce8\u5165\u653b\u64ca\u7e5e\u904eWAF\u7684\u5be6\u8e10\u6280\u5de7\u3002<\/p>\n

MSSQL\u6ce8\u5165\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

MSSQL\u6ce8\u5165\u662f\u4e00\u7a2e\u653b\u64ca\u6280\u8853\uff0c\u653b\u64ca\u8005\u901a\u904e\u5728SQL\u67e5\u8a62\u4e2d\u63d2\u5165\u60e1\u610f\u4ee3\u78bc\u4f86\u64cd\u63a7\u6578\u64da\u5eab\u3002\u9019\u7a2e\u653b\u64ca\u901a\u5e38\u767c\u751f\u5728\u7528\u6236\u8f38\u5165\u672a\u7d93\u904e\u6ffe\u7684\u60c5\u6cc1\u4e0b\u3002\u653b\u64ca\u8005\u53ef\u4ee5\u5229\u7528\u9019\u4e00\u9ede\u4f86\u7372\u53d6\u654f\u611f\u6578\u64da\u3001\u4fee\u6539\u6578\u64da\u6216\u751a\u81f3\u522a\u9664\u6578\u64da\u3002<\/p>\n

WAF\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n

Web\u61c9\u7528\u9632\u706b\u7246\uff08WAF\uff09\u662f\u4e00\u7a2e\u5b89\u5168\u8a2d\u5099\uff0c\u65e8\u5728\u76e3\u63a7\u548c\u904e\u6ffe\u9032\u51faWeb\u61c9\u7528\u7684HTTP\u6d41\u91cf\u3002WAF\u901a\u5e38\u4f7f\u7528\u898f\u5247\u96c6\u4f86\u8b58\u5225\u548c\u963b\u6b62\u53ef\u7591\u7684\u8acb\u6c42\u3002\u9019\u4e9b\u898f\u5247\u53ef\u80fd\u57fa\u65bc\u5df2\u77e5\u7684\u653b\u64ca\u6a21\u5f0f\u3001\u7279\u5fb5\u6216\u884c\u70ba\u5206\u6790\u3002<\/p>\n

\u7e5e\u904eWAF\u7684\u6280\u5de7<\/h2>\n

\u5118\u7ba1WAF\u80fd\u5920\u63d0\u4f9b\u4e00\u5b9a\u7684\u4fdd\u8b77\uff0c\u4f46\u653b\u64ca\u8005\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u6280\u5de7\u4f86\u7e5e\u904e\u9019\u4e9b\u9632\u8b77\u63aa\u65bd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u7e5e\u904e\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528\u7a7a\u683c\u548c\u6ce8\u91cb<\/h3>\n

\u653b\u64ca\u8005\u53ef\u4ee5\u901a\u904e\u5728SQL\u67e5\u8a62\u4e2d\u63d2\u5165\u7a7a\u683c\u6216\u6ce8\u91cb\u4f86\u6df7\u6dc6WAF\u7684\u6aa2\u6e2c\u3002\u4f8b\u5982\uff1a<\/p>\n

SELECT * FROM users WHERE username = 'admin' --' AND password = 'password'<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528\u4e86SQL\u7684\u6ce8\u91cb\u7b26\u865f\uff08–\uff09\u4f86\u5ffd\u7565\u5f8c\u9762\u7684\u689d\u4ef6\uff0c\u9019\u6a23WAF\u53ef\u80fd\u7121\u6cd5\u8b58\u5225\u51fa\u653b\u64ca\u7684\u610f\u5716\u3002<\/p>\n
2. \u4f7f\u7528Unicode\u7de8\u78bc<\/h3>\n
WAF\u53ef\u80fd\u6703\u5c0d\u67d0\u4e9b\u5b57\u7b26\u9032\u884c\u6aa2\u67e5\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u4f7f\u7528Unicode\u7de8\u78bc\u4f86\u7e5e\u904e\u9019\u4e9b\u6aa2\u67e5\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT * FROM users WHERE username = N'admin' COLLATE Chinese_PRC_CI_AS<\/code><\/pre>\n
\u9019\u6a23\u7684\u67e5\u8a62\u53ef\u80fd\u6703\u4f7fWAF\u7121\u6cd5\u8b58\u5225\u51fa\u653b\u64ca\u6a21\u5f0f\u3002<\/p>\n
3. \u5206\u5272\u67e5\u8a62<\/h3>\n
\u653b\u64ca\u8005\u53ef\u4ee5\u5c07SQL\u67e5\u8a62\u5206\u5272\u6210\u591a\u500b\u90e8\u5206\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514dWAF\u7684\u6aa2\u6e2c\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT * FROM users WHERE username = 'admin' UNION SELECT * FROM passwords<\/code><\/pre>\n
\u9019\u6a23\u7684\u67e5\u8a62\u53ef\u80fd\u6703\u88abWAF\u8996\u70ba\u6b63\u5e38\u8acb\u6c42\uff0c\u5f9e\u800c\u7e5e\u904e\u6aa2\u6e2c\u3002<\/p>\n
4. \u4f7f\u7528\u4e0d\u540c\u7684HTTP\u65b9\u6cd5<\/h3>\n
\u6709\u4e9bWAF\u50c5\u6aa2\u67e5GET\u8acb\u6c42\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u5617\u8a66\u4f7f\u7528POST\u8acb\u6c42\u4f86\u767c\u9001SQL\u6ce8\u5165\u3002\u4f8b\u5982\uff1a<\/p>\n
POST \/login HTTP\/1.1\nHost: example.com\nContent-Type: application\/x-www-form-urlencoded\n\nusername=admin' OR '1'='1' --&password=123456<\/code><\/pre>\n
\u9019\u6a23\u7684\u8acb\u6c42\u53ef\u80fd\u6703\u7e5e\u904eWAF\u7684\u6aa2\u6e2c\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
MSSQL\u6ce8\u5165\u653b\u64ca\u662f\u4e00\u7a2e\u6301\u7e8c\u5b58\u5728\u7684\u5a01\u8105\uff0c\u96a8\u8457WAF\u6280\u8853\u7684\u767c\u5c55\uff0c\u653b\u64ca\u8005\u4e5f\u5728\u4e0d\u65b7\u5c0b\u627e\u65b0\u7684\u7e5e\u904e\u65b9\u6cd5\u3002\u4e86\u89e3\u9019\u4e9b\u6280\u5de7\u4e0d\u50c5\u6709\u52a9\u65bc\u5b89\u5168\u5c08\u5bb6\u52a0\u5f37\u9632\u8b77\u63aa\u65bd\uff0c\u4e5f\u80fd\u63d0\u9ad8\u958b\u767c\u4eba\u54e1\u5c0d\u5b89\u5168\u7de8\u78bc\u7684\u8a8d\u8b58\u3002\u70ba\u4e86\u4fdd\u8b77\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u5efa\u8b70\u5b9a\u671f\u9032\u884c\u5b89\u5168\u6e2c\u8a66\u548c\u4ee3\u78bc\u5be9\u67e5\uff0c\u4ee5\u78ba\u4fdd\u4e0d\u6703\u53d7\u5230\u9019\u985e\u653b\u64ca\u7684\u5f71\u97ff\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u9999\u6e2fVPS<\/a><\/em>\u548c\u96f2\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22MSSQL\u6ce8\u5165\u653b\u64ca\u7e5e\u904eWAF\u7684\u5be6\u8e10\u6280\u5de7\uff0c\u63d0\u5347\u5b89\u5168\u9632\u8b77\uff0c\u4e86\u89e3\u653b\u64ca\u8005\u5982\u4f55\u5229\u7528\u6f0f\u6d1e\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-66395","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=66395"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66395\/revisions"}],"predecessor-version":[{"id":66396,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66395\/revisions\/66396"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}