{"id":155757,"date":"2024-11-02T19:09:19","date_gmt":"2024-11-02T11:09:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/155757\/"},"modified":"2024-11-02T19:09:20","modified_gmt":"2024-11-02T11:09:20","slug":"%e9%98%b2%e7%af%84-sql-%e6%b3%a8%e5%85%a5%e6%94%bb%e6%93%8a%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a9%b2%e6%80%8e%e9%ba%bc%e5%81%9a%ef%bc%9f%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%80%8e%e9%ba%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/155757\/","title":{"rendered":"\u9632\u7bc4 SQL \u6ce8\u5165\u653b\u64ca\uff1a\u6578\u64da\u5eab\u8a72\u600e\u9ebc\u505a\uff1f\uff08\u6578\u64da\u5eab\u600e\u9ebc\u963b\u6b62 SQL \u6ce8\u5165\uff09"},"content":{"rendered":"

\u9632\u7bc4 SQL \u6ce8\u5165\u653b\u64ca\uff1a\u6578\u64da\u5eab\u8a72\u600e\u9ebc\u505a\uff1f\uff08\u6578\u64da\u5eab\u600e\u9ebc\u963b\u6b62 SQL \u6ce8\u5165\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u5b89\u5168\u6027\u6210\u70ba\u4e86\u4f01\u696d\u548c\u958b\u767c\u8005\u5fc5\u9808\u91cd\u8996\u7684\u8b70\u984c\u3002SQL \u6ce8\u5165\u653b\u64ca\uff08SQL Injection\uff09\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u7db2\u7d61\u653b\u64ca\u624b\u6cd5\uff0c\u653b\u64ca\u8005\u901a\u904e\u5728 SQL \u67e5\u8a62\u4e2d\u63d2\u5165\u60e1\u610f\u4ee3\u78bc\uff0c\u4f86\u7aca\u53d6\u3001\u4fee\u6539\u6216\u522a\u9664\u6578\u64da\u3002\u9019\u7a2e\u653b\u64ca\u65b9\u5f0f\u4e0d\u50c5\u6703\u5c0e\u81f4\u6578\u64da\u6d29\u9732\uff0c\u9084\u53ef\u80fd\u5c0d\u4f01\u696d\u7684\u8072\u8b7d\u9020\u6210\u56b4\u91cd\u640d\u5bb3\u3002\u56e0\u6b64\uff0c\u4e86\u89e3\u5982\u4f55\u9632\u7bc4 SQL \u6ce8\u5165\u653b\u64ca\u662f\u6bcf\u4f4d\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u7684\u8cac\u4efb\u3002<\/p>\n

\u4ec0\u9ebc\u662f SQL \u6ce8\u5165\u653b\u64ca\uff1f<\/h2>\n

SQL \u6ce8\u5165\u653b\u64ca\u662f\u6307\u653b\u64ca\u8005\u5229\u7528\u61c9\u7528\u7a0b\u5e8f\u7684\u6f0f\u6d1e\uff0c\u5c07\u60e1\u610f\u7684 SQL \u8a9e\u53e5\u63d2\u5165\u5230\u67e5\u8a62\u4e2d\uff0c\u5f9e\u800c\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\u4f8b\u5982\uff0c\u7576\u7528\u6236\u5728\u767b\u9304\u8868\u55ae\u4e2d\u8f38\u5165\u7528\u6236\u540d\u548c\u5bc6\u78bc\u6642\uff0c\u5982\u679c\u9019\u4e9b\u8f38\u5165\u76f4\u63a5\u7528\u65bc\u69cb\u5efa SQL \u67e5\u8a62\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u901a\u904e\u7279\u88fd\u7684\u8f38\u5165\u4f86\u6539\u8b8a\u67e5\u8a62\u7684\u908f\u8f2f\u3002<\/p>\n

SQL \u6ce8\u5165\u7684\u7bc4\u4f8b<\/h3>\n
-- \u5047\u8a2d\u6709\u4e00\u500b\u7c21\u55ae\u7684 SQL \u67e5\u8a62\nSELECT * FROM users WHERE username = 'admin' AND password = 'password';\n\n-- \u653b\u64ca\u8005\u53ef\u4ee5\u8f38\u5165\u4ee5\u4e0b\u5167\u5bb9\n' OR '1'='1'; --\n\n-- \u6700\u7d42\u67e5\u8a62\u8b8a\u70ba\nSELECT * FROM users WHERE username = '' OR '1'='1'; --' AND password = 'password';\n<\/code><\/pre>\n
\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u7528\u6236\u7684\u6578\u64da\uff0c\u56e0\u70ba ‘1’=’1′ \u6c38\u9060\u70ba\u771f\u3002<\/p>\n
\u5982\u4f55\u9632\u7bc4 SQL \u6ce8\u5165\u653b\u64ca<\/h2>\n
1. \u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\uff08Prepared Statements\uff09<\/h3>\n
\u9810\u8655\u7406\u8a9e\u53e5\u662f\u4e00\u7a2e\u5b89\u5168\u7684 SQL \u67e5\u8a62\u65b9\u5f0f\uff0c\u5b83\u5c07 SQL \u8a9e\u53e5\u8207\u7528\u6236\u8f38\u5165\u5206\u958b\u8655\u7406\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u7528\u6236\u8f38\u5165\u4e86\u60e1\u610f\u4ee3\u78bc\uff0c\u4e5f\u4e0d\u6703\u88ab\u57f7\u884c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 PHP \u7684\u7bc4\u4f8b\uff1a<\/p>\n
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username AND password = :password');\n$stmt->execute(['username' => $inputUsername, 'password' => $inputPassword]);\n<\/code><\/pre>\n
2. \u4f7f\u7528 ORM\uff08\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff09<\/h3>\n
ORM \u6846\u67b6\u901a\u5e38\u6703\u81ea\u52d5\u8655\u7406 SQL \u67e5\u8a62\u7684\u751f\u6210\uff0c\u4e26\u4e14\u5167\u5efa\u9632\u7bc4 SQL \u6ce8\u5165\u7684\u6a5f\u5236\u3002\u4f7f\u7528 ORM \u53ef\u4ee5\u6e1b\u5c11\u624b\u52d5\u7de8\u5beb SQL \u8a9e\u53e5\u7684\u6a5f\u6703\uff0c\u5f9e\u800c\u964d\u4f4e SQL \u6ce8\u5165\u7684\u98a8\u96aa\u3002<\/p>\n
3. \u8f38\u5165\u9a57\u8b49<\/h3>\n
\u5c0d\u7528\u6236\u8f38\u5165\u9032\u884c\u56b4\u683c\u7684\u9a57\u8b49\u662f\u9632\u7bc4 SQL \u6ce8\u5165\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u61c9\u8a72\u78ba\u4fdd\u6240\u6709\u8f38\u5165\u90fd\u7b26\u5408\u9810\u671f\u7684\u683c\u5f0f\uff0c\u4f8b\u5982\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u4f86\u6aa2\u67e5\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u6216\u7528\u6236\u540d\u7684\u6709\u6548\u6027\u3002<\/p>\n
4. \u6700\u5c0f\u6b0a\u9650\u539f\u5247<\/h3>\n
\u6578\u64da\u5eab\u7528\u6236\u61c9\u8a72\u50c5\u64c1\u6709\u57f7\u884c\u5176\u4efb\u52d9\u6240\u9700\u7684\u6700\u4f4e\u6b0a\u9650\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u653b\u64ca\u8005\u6210\u529f\u57f7\u884c\u4e86 SQL \u6ce8\u5165\u653b\u64ca\uff0c\u4ed6\u5011\u4e5f\u7121\u6cd5\u7372\u53d6\u654f\u611f\u6578\u64da\u6216\u57f7\u884c\u5371\u96aa\u64cd\u4f5c\u3002<\/p>\n
5. \u5b9a\u671f\u5b89\u5168\u6e2c\u8a66<\/h3>\n
\u5b9a\u671f\u9032\u884c\u5b89\u5168\u6e2c\u8a66\u548c\u4ee3\u78bc\u5be9\u67e5\u53ef\u4ee5\u5e6b\u52a9\u53ca\u65e9\u767c\u73fe\u6f5b\u5728\u7684 SQL \u6ce8\u5165\u6f0f\u6d1e\u3002\u4f7f\u7528\u81ea\u52d5\u5316\u5de5\u5177\u9032\u884c\u6f0f\u6d1e\u6383\u63cf\u4e5f\u662f\u4e00\u500b\u6709\u6548\u7684\u7b56\u7565\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
SQL \u6ce8\u5165\u653b\u64ca\u662f\u4e00\u7a2e\u5371\u96aa\u4e14\u5e38\u898b\u7684\u5b89\u5168\u5a01\u8105\uff0c\u4f46\u901a\u904e\u63a1\u53d6\u9069\u7576\u7684\u9810\u9632\u63aa\u65bd\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u98a8\u96aa\u3002\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u3001ORM\u3001\u8f38\u5165\u9a57\u8b49\u3001\u6700\u5c0f\u6b0a\u9650\u539f\u5247\u4ee5\u53ca\u5b9a\u671f\u5b89\u5168\u6e2c\u8a66\uff0c\u90fd\u662f\u9632\u7bc4 SQL \u6ce8\u5165\u7684\u6709\u6548\u65b9\u6cd5\u3002\u96a8\u8457\u7db2\u7d61\u5b89\u5168\u5a01\u8105\u7684\u65e5\u76ca\u589e\u52a0\uff0c\u4f01\u696d\u548c\u958b\u767c\u8005\u5fc5\u9808\u4fdd\u6301\u8b66\u60d5\uff0c\u78ba\u4fdd\u5176\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc \u9999\u6e2f VPS<\/a> \u548c\u6578\u64da\u5eab\u5b89\u5168\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u9632\u7bc4 SQL \u6ce8\u5165\u653b\u64ca\uff0c\u900f\u904e\u6700\u4f73\u5be6\u8e10\u548c\u5b89\u5168\u63aa\u65bd\uff0c\u4fdd\u8b77\u6578\u64da\u5eab\u514d\u53d7\u6f5b\u5728\u5a01\u8105\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-155757","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155757","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=155757"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155757\/revisions"}],"predecessor-version":[{"id":155758,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155757\/revisions\/155758"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=155757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=155757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=155757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}