{"id":84737,"date":"2026-07-26T16:48:40","date_gmt":"2026-07-26T08:48:40","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/84737.html"},"modified":"2026-07-26T16:48:40","modified_gmt":"2026-07-26T08:48:40","slug":"dvwa-medium-file-upload%e5%ae%89%e5%85%a8%e6%b5%8b%e8%af%95%e4%b8%8e%e9%98%b2%e6%8a%a4%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/84737.html","title":{"rendered":"DVWA Medium File Upload\u5b89\u5168\u6d4b\u8bd5\u4e0e\u9632\u62a4\u5206\u6790"},"content":{"rendered":"

\u6ce8\u610f：\u6709\u5173 File Upload \u6f0f\u6d1e\u7684\u57fa\u7840\u77e5\u8bc6\u4e0e\u539f\u7406\u5df2\u5728\u4e0a\u7bc7\u6587\u7ae0\u6307\u51fa，\u6b64\u5904\u4e0d\u518d\u89e3\u91ca\u3002
\n\u53ef\u53c2\u8003\u8be5\u6587\u7ae0https:\/\/www.cnblogs.com\/lky-sec\/articles\/21412117
\n\u672c\u6587\u4ec5\u7528\u4e8e\u7f51\u7edc\u5b89\u5168\u5b66\u4e60\u4e0e\u9632\u5fa1\u7814\u7a76\u3002\u6240\u6709\u6d4b\u8bd5\u5747\u5728\u672c\u4eba\u672c\u5730\u90e8\u7f72\u3001\u5408\u6cd5\u6388\u6743\u7684 DVWA \u9776\u573a\u4e2d\u8fdb\u884c，\u7981\u6b62\u5c06\u76f8\u5173\u65b9\u6cd5\u7528\u4e8e\u4efb\u4f55\u672a\u6388\u6743\u7cfb\u7edf\u3002<\/p>\n

\u4e2d\u7b49\u96be\u5ea6 File Upload<\/h2>\n

\u4e00 \u6d4b\u8bd5\u8303\u56f4\u4e0e\u73af\u5883<\/h3>\n

\u672c\u6b21\u6d4b\u8bd5\u76ee\u6807\u4e3a\u672c\u5730 DVWA \u9776\u573a\u4e2d\u7684 File Upload \u6a21\u5757\u3002<\/p>\n\n\u9879\u76ee\u914d\u7f6e<\/tr>\n\n\n\n\n\n\n\n
\u6d4b\u8bd5\u73af\u5883<\/td>\n\u672c\u5730 DVWA \u9776\u573a<\/td>\n<\/tr>\n
\u5b89\u5168\u7b49\u7ea7<\/td>\nMedium<\/td>\n<\/tr>\n
\u6d4b\u8bd5\u7cfb\u7edf<\/td>\nKali Linux<\/td>\n<\/tr>\n
\u6d4b\u8bd5\u5de5\u5177<\/td>\nFirefox\u3001Burp Suite<\/td>\n<\/tr>\n
\u6d4b\u8bd5\u65b9\u5f0f<\/td>\n\u9ed1\u76d2\u6d4b\u8bd5\u3001\u8bf7\u6c42\u5206\u6790\u3001\u6e90\u7801\u5ba1\u8ba1<\/td>\n<\/tr>\n
\u6388\u6743\u60c5\u51b5<\/td>\n\u672c\u4eba\u672c\u5730\u9776\u573a，\u5408\u6cd5\u6388\u6743<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e8c \u9875\u9762\u4e0e\u8bf7\u6c42\u5206\u6790<\/h3>\n

1. \u8bbe\u7f6e\u96be\u5ea6\u7b49\u7ea7<\/h4>\n

\u8fdb\u5165 DVWA Security，\u5c06\u5b89\u5168\u7b49\u7ea7\u8bbe\u7f6e\u4e3a Medium，\u968f\u540e\u8fdb\u5165 File Upload \u6a21\u5757\u3002
\n\"image\"<\/p>\n

2. \u89c2\u5bdf\u6a21\u5757\u6b63\u5e38\u529f\u80fd<\/h4>\n

\u4f7f\u7528\u81ea\u5df1\u521b\u5efa\u7684\u6587\u6863test1.txt\u8fdb\u884c\u63d0\u4ea4，\u53d1\u73b0\u9875\u9762\u8fd4\u56de\u7ed3\u679c\u63d0\u793a，\u4ec5\u80fd\u63d0\u4ea4JPEG\/PNG\u3002\u53ef\u77e5\u6a21\u5757\u6b63\u5e38\u529f\u80fd\u4e3a\u63d0\u4ea4JPEG\/PNG\u683c\u5f0f\u6587\u4ef6\u3002
\n\"image\"<\/p>\n

3. \u4f7f\u7528 Burp Suite \u8fdb\u884c\u6293\u5305\u5206\u6790<\/h4>\n

\u5f00\u542fBurp Suite Proxy\u6a21\u5757\u8fdb\u884c\u62e6\u622a，\u63d0\u4ea4\u4e00\u6b21\u6b63\u5e38\u8bf7\u6c42\u3002
\n\"image\"
\n\u4ece\u5f53\u524d HTTP \u8bf7\u6c42\u53ef\u4ee5\u786e\u5b9a，Medium File Upload \u6a21\u5757\u4e0a\u4f20\u6587\u4ef6\u65f6\u4f1a\u5411\u670d\u52a1\u5668\u63d0\u4ea4\u6587\u4ef6\u540d\u3001\u6587\u4ef6\u5b57\u6bb5\u4e2d\u7684 Content-Type\u3001\u6587\u4ef6\u5185\u5bb9\u4ee5\u53ca MAX_FILE_SIZE\u3002\u4e14MAX_FILE_SIZE\u6570\u503c\u4e3a100000（\u540e\u7eed\u5206\u6790\u6e90\u7801\u662f\u6587\u4ef6\u5927\u5c0f\u9700\u5c0f\u4e8e100000\u5b57\u8282）<\/p>\n

\u4e09 \u624b\u5de5\u9ed1\u76d2\u6d4b\u8bd5<\/h3>\n

1.\u4fee\u6539\u6587\u4ef6\u7c7b\u578b<\/h4>\n

\u524d\u9762\u5206\u6790\u53ef\u77e5，\u6a21\u5757\u53ea\u53ef\u63d0\u4ea4JPEG\/PNG\u7c7b\u578b，\u5c06\u8bf7\u6c42\u53d1\u9001\u81f3Repeater\u6a21\u5757，\u5c1d\u8bd5\u5c06test1.txt\u6587\u4ef6\u5b57\u6bb5\u7684Content-Type\u4fee\u6539\u540e\u53d1\u9001\u3002
\n\"image\"
\n\u7531\u8fd4\u56de\u7ed3\u679c\u53ef\u77e5，\u6587\u4ef6\u4e0a\u4f20\u6210\u529f，\u5206\u6790\u53ef\u77e5，\u8be5\u7ed3\u679c\u8bf4\u660e\u7a0b\u5e8f\u7684\u6587\u4ef6\u7c7b\u578b\u5224\u65ad\u4f9d\u8d56\u5ba2\u6237\u7aef\u63d0\u4f9b\u7684Content-Type，\u5e76\u4e14\u6ca1\u6709\u6821\u9a8c\u6587\u4ef6\u6269\u5c55\u540d\u548c\u771f\u5b9e\u56fe\u7247\u5185\u5bb9\u3002\u63a5\u4e0b\u6765\u8fdb\u4e00\u6b65\u9a8c\u8bc1\u4e0a\u4f20\u76ee\u5f55\u662f\u5426\u5177\u6709\u811a\u672c\u89e3\u6790\u80fd\u529b\u3002<\/p>\n

2.\u6784\u9020\u811a\u672c<\/h4>\n

\u6784\u5efaphp\u811a\u672c\u6587\u4ef6，\u4e0a\u4f20\u8fdb\u884c\u63d0\u4ea4，\u4fee\u6539\u6587\u4ef6\u5b57\u6bb5\u7684Content-Type\u540e\u53d1\u9001\u3002
\n\"image\"<\/p>\n

3.\u9a8c\u8bc1\u4e0a\u4f20\u76ee\u5f55\u7684\u811a\u672c\u89e3\u6790\u884c\u4e3a<\/h4>\n

\u5c06\u8fd4\u56de\u7ed3\u679c..\/..\/hackable\/uploads\/test2.php\u62fc\u63a5\u5230\u6d4f\u89c8\u5668URL\u5904，\u53d1\u73b0\u6587\u4ef6\u5185\u5bb9\u88ab\u6267\u884c，\u8fd4\u56dePHP\u7248\u672c\u7b49\u4fe1\u606f\u3002\u8bf4\u660e\u5f53\u524d\u670d\u52a1\u5668\u5141\u8bb8\u5728\u8be5\u76ee\u5f55\u4e2d\u89e3\u6790PHP\u811a\u672c\u3002
\n\"image\"<\/p>\n

\u56db \u4ee3\u7801\u5ba1\u8ba1<\/h3>\n

1.\u70b9\u51fbview source\u67e5\u770b\u6e90\u7801<\/h4>\n

<?php<\/p>\n

if( isset( $_POST[ 'Upload' ] ) ) {
\n \/\/ Where are we going to be writing to?
\n $target_path = DVWA_WEB_PAGE_TO_ROOT . "hackable\/uploads\/";
\n $target_path .= basename( $_FILES[ 'uploaded' ][ 'name' ] );<\/p>\n

\/\/ File information
\n $uploaded_name = $_FILES[ 'uploaded' ][ 'name' ];
\n $uploaded_type = $_FILES[ 'uploaded' ][ 'type' ];
\n $uploaded_size = $_FILES[ 'uploaded' ][ 'size' ];<\/p>\n

\/\/ Is it an image?
\n if( ( $uploaded_type == "image\/jpeg" || $uploaded_type == "image\/png" ) &&
\n ( $uploaded_size < 100000 ) ) {<\/p>\n

\/\/ Can we move the file to the upload folder?
\n if( !move_uploaded_file( $_FILES[ 'uploaded' ][ 'tmp_name' ], $target_path ) ) {
\n \/\/ No
\n echo '<pre>Your image was not uploaded.<\/pre>';
\n }
\n else {
\n \/\/ Yes!
\n echo "<pre>{$target_path} succesfully uploaded!<\/pre>";
\n }
\n }
\n else {
\n \/\/ Invalid file
\n echo '<pre>Your image was not uploaded. We can only accept JPEG or PNG images.<\/pre>';
\n }
\n}<\/p>\n

?> <\/p>\n

2.\u6e90\u7801\u5206\u6790<\/h4>\n

Medium \u7b49\u7ea7\u9996\u5148\u83b7\u53d6\u4e0a\u4f20\u6587\u4ef6\u7684\u6587\u4ef6\u540d\u3001MIME \u7c7b\u578b\u548c\u6587\u4ef6\u5927\u5c0f：<\/p>\n

$uploaded_name = $_FILES[ 'uploaded' ][ 'name' ];
\n$uploaded_type = $_FILES[ 'uploaded' ][ 'type' ];
\n$uploaded_size = $_FILES[ 'uploaded' ][ 'size' ];<\/p>\n

\u968f\u540e\u7a0b\u5e8f\u5bf9\u4e0a\u4f20\u6587\u4ef6\u8fdb\u884c\u9650\u5236，\u53ea\u5141\u8bb8：<\/p>\n

image\/jpeg
\nimage\/png<\/p>\n

\u5e76\u8981\u6c42\u6587\u4ef6\u5927\u5c0f\u5c0f\u4e8e100000\u5b57\u8282：<\/p>\n

if( ( $uploaded_type == "image\/jpeg" || $uploaded_type == "image\/png" ) &&
\n ( $uploaded_size < 100000 ) )<\/p>\n

\u76f8\u6bd4 Low \u7b49\u7ea7，Medium \u589e\u52a0\u4e86\u6587\u4ef6\u7c7b\u578b\u548c\u6587\u4ef6\u5927\u5c0f\u6821\u9a8c\u3002<\/p>\n

\u4f46\u8fd9\u91cc\u7684 $uploaded_type \u6765\u6e90\u4e8e\u5ba2\u6237\u7aef\u4e0a\u4f20\u8bf7\u6c42\u4e2d\u7684 Content-Type，\u8be5\u503c\u53ef\u4ee5\u901a\u8fc7 Burp Suite \u76f4\u63a5\u4fee\u6539\u3002\u56e0\u6b64\u653b\u51fb\u8005\u53ef\u4ee5\u5c06 PHP \u6587\u4ef6\u7684 Content-Type \u4fee\u6539\u4e3a image\/jpeg \u6216 image\/png，\u4ece\u800c\u7ed5\u8fc7 MIME \u7c7b\u578b\u68c0\u67e5\u3002<\/p>\n

\u540c\u65f6，\u7a0b\u5e8f\u4ecd\u7136\u76f4\u63a5\u4f7f\u7528\u539f\u59cb\u6587\u4ef6\u540d：<\/p>\n

$target_path .= basename( $_FILES[ 'uploaded' ][ 'name' ] );<\/p>\n

\u5e76\u901a\u8fc7 move_uploaded_file() \u5c06\u6587\u4ef6\u4fdd\u5b58\u5230 Web \u53ef\u8bbf\u95ee\u7684\u4e0a\u4f20\u76ee\u5f55\u4e2d，\u6ca1\u6709\u8fdb\u4e00\u6b65\u68c0\u67e5\u6587\u4ef6\u6269\u5c55\u540d\u6216\u6587\u4ef6\u771f\u5b9e\u5185\u5bb9\u3002<\/p>\n

\u56e0\u6b64，\u8be5\u6f0f\u6d1e\u7684\u4e3b\u8981\u539f\u56e0\u662f：\u7a0b\u5e8f\u4ec5\u4f9d\u8d56\u5ba2\u6237\u7aef\u53ef\u63a7\u7684 MIME \u7c7b\u578b\u5224\u65ad\u6587\u4ef6\u7c7b\u578b，\u7f3a\u5c11\u5bf9\u6587\u4ef6\u6269\u5c55\u540d\u548c\u771f\u5b9e\u6587\u4ef6\u5185\u5bb9\u7684\u670d\u52a1\u7aef\u6821\u9a8c\u3002<\/p>\n

3.\u4fee\u590d\u65b9\u6848<\/h4>\n

1）\u5bf9\u4e0a\u4f20\u6587\u4ef6\u6269\u5c55\u540d\u8fdb\u884c\u767d\u540d\u5355\u6821\u9a8c，\u4ec5\u5141\u8bb8 JPEG\u3001JPG\u3001PNG \u7b49\u5408\u6cd5\u56fe\u7247\u683c\u5f0f\u3002
\n2）\u4f7f\u7528\u670d\u52a1\u7aef\u6587\u4ef6\u68c0\u6d4b\u51fd\u6570\u6821\u9a8c\u771f\u5b9e MIME \u7c7b\u578b，\u4e0d\u4fe1\u4efb\u5ba2\u6237\u7aef\u63d0\u4ea4\u7684 Content-Type\u3002
\n3）\u5bf9\u4e0a\u4f20\u56fe\u7247\u8fdb\u884c\u5185\u5bb9\u89e3\u6790，\u786e\u8ba4\u6587\u4ef6\u80fd\u591f\u88ab\u6b63\u5e38\u8bc6\u522b\u4e3a\u56fe\u7247\u3002
\n4）\u5bf9\u4e0a\u4f20\u6587\u4ef6\u91cd\u65b0\u751f\u6210\u968f\u673a\u6587\u4ef6\u540d，\u907f\u514d\u76f4\u63a5\u4f7f\u7528\u7528\u6237\u63d0\u4ea4\u7684\u539f\u59cb\u6587\u4ef6\u540d\u3002
\n5）\u4e25\u683c\u9650\u5236\u4e0a\u4f20\u6587\u4ef6\u5927\u5c0f，\u5e76\u5728\u670d\u52a1\u7aef\u8fdb\u884c\u6821\u9a8c\u3002
\n6）\u5c06\u4e0a\u4f20\u76ee\u5f55\u8bbe\u7f6e\u4e3a\u4e0d\u53ef\u6267\u884c\u76ee\u5f55，\u7981\u6b62 PHP \u7b49\u811a\u672c\u6587\u4ef6\u88ab\u89e3\u6790\u6267\u884c\u3002
\n7）\u5c06\u4e0a\u4f20\u6587\u4ef6\u5b58\u50a8\u5728 Web \u6839\u76ee\u5f55\u4e4b\u5916，\u901a\u8fc7\u53d7\u63a7\u63a5\u53e3\u8fdb\u884c\u8bbf\u95ee\u3002
\n8）\u5bf9\u4e0a\u4f20\u5931\u8d25\u3001\u7c7b\u578b\u5f02\u5e38\u548c\u9ad8\u9891\u4e0a\u4f20\u884c\u4e3a\u8fdb\u884c\u65e5\u5fd7\u8bb0\u5f55\u4e0e\u5b89\u5168\u76d1\u63a7\u3002<\/p>\n

\u4e94 Low\u4e0eMedium\u5dee\u5f02<\/h3>\n\n\u5bf9\u6bd4\u9879LowMedium<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u4e0a\u4f20\u76ee\u5f55<\/td>\nhackable\/uploads\/<\/td>\nhackable\/uploads\/<\/td>\n<\/tr>\n
\u6587\u4ef6\u540d\u5904\u7406<\/td>\n\u4f7f\u7528 basename() \u83b7\u53d6\u539f\u59cb\u6587\u4ef6\u540d<\/td>\n\u4f7f\u7528 basename() \u83b7\u53d6\u539f\u59cb\u6587\u4ef6\u540d<\/td>\n<\/tr>\n
\u6587\u4ef6\u7c7b\u578b\u6821\u9a8c<\/td>\n\u65e0<\/td>\n\u6821\u9a8c MIME \u7c7b\u578b<\/td>\n<\/tr>\n
\u5141\u8bb8\u7684 MIME \u7c7b\u578b<\/td>\n\u4e0d\u9650\u5236<\/td>\nimage\/jpeg\u3001image\/png<\/td>\n<\/tr>\n
\u6587\u4ef6\u5927\u5c0f\u6821\u9a8c<\/td>\n\u65e0<\/td>\n\u9650\u5236\u5c0f\u4e8e 100000 \u5b57\u8282<\/td>\n<\/tr>\n
\u6587\u4ef6\u6269\u5c55\u540d\u6821\u9a8c<\/td>\n\u65e0<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u6587\u4ef6\u771f\u5b9e\u5185\u5bb9\u6821\u9a8c<\/td>\n\u65e0<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u662f\u5426\u4fe1\u4efb\u5ba2\u6237\u7aef Content-Type<\/td>\n\u4e0d\u6d89\u53ca<\/td>\n\u662f<\/td>\n<\/tr>\n
\u6587\u4ef6\u91cd\u547d\u540d<\/td>\n\u65e0<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u6587\u4ef6\u4fdd\u5b58\u65b9\u5f0f<\/td>\nmove_uploaded_file()<\/td>\nmove_uploaded_file()<\/td>\n<\/tr>\n
PHP \u6587\u4ef6\u76f4\u63a5\u4e0a\u4f20<\/td>\n\u53ef\u4ee5<\/td>\n\u9ed8\u8ba4\u65e0\u6cd5\u901a\u8fc7\u7c7b\u578b\u6821\u9a8c<\/td>\n<\/tr>\n
\u4fee\u6539 MIME \u7c7b\u578b\u7ed5\u8fc7<\/td>\n\u4e0d\u9700\u8981<\/td>\n\u53ef\u4ee5\u7ed5\u8fc7\u7c7b\u578b\u6821\u9a8c<\/td>\n<\/tr>\n
\u4e3b\u8981\u9632\u62a4\u63aa\u65bd<\/td>\n\u65e0\u660e\u663e\u4e0a\u4f20\u9650\u5236<\/td>\n\u589e\u52a0 MIME \u7c7b\u578b\u548c\u6587\u4ef6\u5927\u5c0f\u9650\u5236<\/td>\n<\/tr>\n
\u4e3b\u8981\u5b89\u5168\u95ee\u9898<\/td>\n\u672a\u5bf9\u4e0a\u4f20\u6587\u4ef6\u8fdb\u884c\u6709\u6548\u6821\u9a8c<\/td>\nMIME \u7c7b\u578b\u53ef\u7531\u5ba2\u6237\u7aef\u63a7\u5236，\u4e14\u672a\u6821\u9a8c\u6269\u5c55\u540d\u548c\u771f\u5b9e\u6587\u4ef6\u5185\u5bb9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

\u6ce8\u610f：\u6709\u5173 File Upload \u6f0f\u6d1e\u7684\u57fa\u7840\u77e5\u8bc6\u4e0e\u539f\u7406\u5df2\u5728\u4e0a\u7bc7\u6587\u7ae0\u6307\u51fa，\u6b64\u5904\u4e0d\u518d\u89e3\u91ca\u3002
\n\u53ef\u53c2\u8003\u8be5\u6587\u7ae0https:\/\/www.cnblogs.com\/lky-sec\/articles\/21412117
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