{"id":203776,"date":"2025-05-22T13:19:00","date_gmt":"2025-05-22T05:19:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203776\/"},"modified":"2025-05-22T13:19:00","modified_gmt":"2025-05-22T05:19:00","slug":"%e5%a6%82%e4%bd%95%e5%b0%86-xss-%e8%bf%87%e6%bb%a4%e5%90%8e%e7%9a%84%e8%bd%ac%e4%b9%89%e5%ad%97%e7%ac%a6%e8%bf%98%e5%8e%9f%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203776\/","title":{"rendered":"\u5982\u4f55\u5c06 XSS \u8fc7\u6ee4\u540e\u7684\u8f6c\u4e49\u5b57\u7b26\u8fd8\u539f\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u5c06 XSS \u8fc7\u6ee4\u540e\u7684\u8f6c\u4e49\u5b57\u7b26\u8fd8\u539f\uff1f<\/h1>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300a\u5982\u4f55\u5c06 XSS \u8fc7\u6ee4\u540e\u7684\u8f6c\u4e49\u5b57\u7b26\u8fd8\u539f\uff1f\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u8f6c\u56de\u88ab xssfilter \u8f6c\u4e49\u7684\u5b57\u7b26<\/strong><\/p>\n

\u5f53 xssfilter \u68c0\u6d4b\u5230\u975e\u6cd5\u5b57\u7b26\u65f6\uff0c\u5b83\u4f1a\u5c06\u8fd9\u4e9b\u5b57\u7b26\u8f6c\u4e49\u4ee5\u9632\u6b62\u8de8\u7ad9\u811a\u672c\u653b\u51fb\u3002\u7136\u800c\uff0c\u5f53\u60a8\u5e0c\u671b\u5728\u8fd4\u56de\u9875\u9762\u65f6\u8fd8\u539f\u8fd9\u4e9b\u5b57\u7b26\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u91c7\u53d6\u989d\u5916\u7684\u6b65\u9aa4\u3002<\/p>\n

\u5728 java \u4ee3\u7801\u4e2d\u8f6c\u6362<\/strong><\/p>\n

\u4e00\u79cd\u65b9\u6cd5\u662f\u5728 java \u4ee3\u7801\u4e2d\u4f7f\u7528 stringescapeutils \u6216\u7c7b\u4f3c\u7684\u5e93\u624b\u52a8\u8f6c\u6362\u8f6c\u4e49\u7684\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n

string originalstring = \"<script>alert('xss')<\/script>\";\nstring escapedstring = stringescapeutils.escapehtml4(originalstring);\nstring unescapedstring = stringescapeutils.unescapehtml4(escapedstring);<\/pre>\n
\u4f7f\u7528 responsebodyadvice<\/strong><\/p>\n
\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 spring responsebodyadvice\u3002responsebodyadvice \u5141\u8bb8\u60a8\u5728\u8fd4\u56de\u9875\u9762\u4e4b\u524d\u62e6\u622a\u548c\u4fee\u6539 http \u54cd\u5e94\u4e3b\u4f53\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5\u65b9\u6cd5\u6765\u5c06\u8f6c\u4e49\u7684\u5b57\u7b26\u66ff\u6362\u4e3a\u539f\u59cb\u5b57\u7b26\u3002<\/p>\n
\u5728 spring boot \u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5b9e\u73b0 responsebodyadvice \u63a5\u53e3\u7684 bean\uff1a<\/p>\n
@RestControllerAdvice\npublic class UnescapeResponseBodyAdvice implements ResponseBodyAdvice<Object> {\n\n    @Override\n    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {\n        return true;\n    }\n\n    @Override\n    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType,\n                                  Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {\n        if (body instanceof String) {\n            return StringEscapeUtils.unescapeHtml4((String) body);\n        }\n        return body;\n    }\n}<\/pre>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6240\u6709\u8fd4\u56de\u7684\u5b57\u7b26\u4e32\u54cd\u5e94\u4e3b\u4f53\u90fd\u4f1a\u5728\u8fd4\u56de\u9875\u9762\u4e4b\u524d\u81ea\u52a8\u8fd8\u539f\u8f6c\u4e49\u7684\u5b57\u7b26\u3002<\/p>\n
\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u5c06 XSS \u8fc7\u6ee4\u540e\u7684\u8f6c\u4e49\u5b57\u7b26\u8fd8\u539f\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u5c06 XSS \u8fc7\u6ee4\u540e\u7684\u8f6c\u4e49\u5b57\u7b26...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203776","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203776","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203776"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203776\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}