“`” \u6240\u8c13SQL\u6ce8\u5165\u5f0f\u653b\u51fb\uff0c\u5c31\u662f\u653b\u51fb\u8005\u628aSQL\u547d\u4ee4\u63d2\u5165\u5230Web\u8868\u5355\u7684\u8f93\u5165\u57df\u6216\u9875\u9762\u8bf7\u6c42\u7684\u67e5\u8be2\u5b57\u7b26\u4e32\uff0c\u6b3a\u9a97\u670d\u52a1\u5668\u6267\u884c\u6076\u610f\u7684SQL\u547d\u4ee4\u3002\u5728\u67d0\u4e9b\u8868\u5355\u4e2d\uff0c\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9\u76f4\u63a5\u7528\u6765\u6784\u9020\uff08\u6216\u8005\u5f71\u54cd\uff09\u52a8\u6001SQL\u547d\u4ee4\uff0c\u6216\u4f5c\u4e3a\u5b58\u50a8\u8fc7\u7a0b\u7684\u8f93\u5165\u53c2\u6570\uff0c\u8fd9\u7c7b\u8868\u5355\u7279\u522b\u5bb9\u6613\u53d7\u5230SQL\u6ce8\u5165\u5f0f\u653b\u51fb\u3002\u5e38\u89c1\u7684SQL\u6ce8\u5165\u5f0f\u653b\u51fb\u8fc7\u7a0b\u7c7b\u5982\uff1a<\/p>\n
\u2474 \u67d0\u4e2aASP.NET Web\u5e94\u7528\u6709\u4e00\u4e2a\u767b\u5f55\u9875\u9762\uff0c\u8fd9\u4e2a\u767b\u5f55\u9875\u9762\u63a7\u5236\u7740\u7528\u6237\u662f\u5426\u6709\u6743\u8bbf\u95ee\u5e94\u7528\uff0c\u5b83\u8981\u6c42\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u540d\u79f0\u548c\u5bc6\u7801\u3002<\/p>\n
\u2475 \u767b\u5f55\u9875\u9762\u4e2d\u8f93\u5165\u7684\u5185\u5bb9\u5c06\u76f4\u63a5\u7528\u6765\u6784\u9020\u52a8\u6001\u7684SQL\u547d\u4ee4\uff0c\u6216\u8005\u76f4\u63a5\u7528\u4f5c\u5b58\u50a8\u8fc7\u7a0b\u7684\u53c2\u6570\u3002\u4e0b\u9762\u662fASP.NET\u5e94\u7528\u6784\u9020\u67e5\u8be2\u7684\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
<pre><code>System.Text.StringBuilder query = new System.Text.StringBuilder(
\n ""SELECT * from Users WHERE login = '"")
\n .Append(txtLogin.Text).Append(""' AND password='"")
\n .Append(txtPassword.Text).Append(""'"");
\n<\/code><\/pre><\/p>\n
\u2476 \u653b\u51fb\u8005\u5728\u7528\u6237\u540d\u5b57\u548c\u5bc6\u7801\u8f93\u5165\u6846\u4e2d\u8f93\u5165\u201d\u2019\u6216\u20191\u2019=\u20191\u201d\u4e4b\u7c7b\u7684\u5185\u5bb9\u3002<\/p>\n
\u2477\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9\u63d0\u4ea4\u7ed9\u670d\u52a1\u5668\u4e4b\u540e\uff0c\u670d\u52a1\u5668\u8fd0\u884c\u4e0a\u9762\u7684ASP.NET\u4ee3\u7801\u6784\u9020\u51fa\u67e5\u8be2\u7528\u6237\u7684SQL\u547d\u4ee4\uff0c\u4f46\u7531\u4e8e\u653b\u51fb\u8005\u8f93\u5165\u7684\u5185\u5bb9\u975e\u5e38\u7279\u6b8a\uff0c\u6240\u4ee5\u6700\u540e\u5f97\u5230\u7684SQL\u547d\u4ee4\u53d8\u6210\uff1a<code>SELECT * from Users WHERE login = '' or '1'='1' AND password = '' or '1'='1'<\/code>\u3002<\/p>\n
\u2478 \u670d\u52a1\u5668\u6267\u884c\u67e5\u8be2\u6216\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5c06\u7528\u6237\u8f93\u5165\u7684\u8eab\u4efd\u4fe1\u606f\u548c\u670d\u52a1\u5668\u4e2d\u4fdd\u5b58\u7684\u8eab\u4efd\u4fe1\u606f\u8fdb\u884c\u5bf9\u6bd4\u3002<\/p>\n
\u2479 \u7531\u4e8eSQL\u547d\u4ee4\u5b9e\u9645\u4e0a\u5df2\u88ab\u6ce8\u5165\u5f0f\u653b\u51fb\u4fee\u6539\uff0c\u5df2\u7ecf\u4e0d\u80fd\u771f\u6b63\u9a8c\u8bc1\u7528\u6237\u8eab\u4efd\uff0c\u6240\u4ee5\u7cfb\u7edf\u4f1a\u9519\u8bef\u5730\u6388\u6743\u7ed9\u653b\u51fb\u8005\u3002<\/p>\n
\u5982\u679c\u653b\u51fb\u8005\u77e5\u9053\u5e94\u7528\u4f1a\u5c06\u8868\u5355\u4e2d\u8f93\u5165\u7684\u5185\u5bb9\u76f4\u63a5\u7528\u4e8e\u9a8c\u8bc1\u8eab\u4efd\u7684\u67e5\u8be2\uff0c\u4ed6\u5c31\u4f1a\u5c1d\u8bd5\u8f93\u5165\u67d0\u4e9b\u7279\u6b8a\u7684SQL\u5b57\u7b26\u4e32\u7be1\u6539\u67e5\u8be2\u6539\u53d8\u5176\u539f\u6765\u7684\u529f\u80fd\uff0c\u6b3a\u9a97\u7cfb\u7edf\u6388\u4e88\u8bbf\u95ee\u6743\u9650\u3002<\/p>\n
\u7cfb\u7edf\u73af\u5883\u4e0d\u540c\uff0c\u653b\u51fb\u8005\u53ef\u80fd\u9020\u6210\u7684\u635f\u5bb3\u4e5f\u4e0d\u540c\uff0c\u8fd9\u4e3b\u8981\u7531\u5e94\u7528\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u5b89\u5168\u6743\u9650\u51b3\u5b9a\u3002\u5982\u679c\u7528\u6237\u7684\u5e10\u6237\u5177\u6709\u7ba1\u7406\u5458\u6216\u5176\u4ed6\u6bd4\u8f83\u9ad8\u7ea7\u7684\u6743\u9650\uff0c\u653b\u51fb\u8005\u5c31\u53ef\u80fd\u5bf9\u6570\u636e\u5e93\u7684\u8868\u6267\u884c\u5404\u79cd\u4ed6\u60f3\u8981\u505a\u7684\u64cd\u4f5c\uff0c\u5305\u62ec\u6dfb\u52a0\u3001\u5220\u9664\u6216\u66f4\u65b0\u6570\u636e\uff0c\u751a\u81f3\u53ef\u80fd\u76f4\u63a5\u5220\u9664\u8868<\/p>\n
<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
“`” \u6240\u8c13SQL\u6ce8\u5165\u5f0f\u653b\u51fb\uff0c\u5c31\u662f\u653b\u51fb\u8005\u628aSQL\u547d\u4ee4\u63d2\u5165\u5230Web\u8868\u5355\u7684\u8f93\u5165\u57df\u6216\u9875\u9762\u8bf7\u6c42 […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-47835","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=47835"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47835\/revisions"}],"predecessor-version":[{"id":47836,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47835\/revisions\/47836"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=47835"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=47835"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=47835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}