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CVE-2019-18873 PoC — FUDForum 跨站脚本漏洞

Source
Associated Vulnerability
Title:FUDForum 跨站脚本漏洞 (CVE-2019-18873)
Description:FUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header. This may result in remote code execution. An attacker can use a user account to fully compromise the system via a GET request. When the admin visits user information under "User Manager" in the control panel, the payload will execute. This will allow for PHP files to be written to the web root, and for code to execute on the remote server. The problem is in admsession.php and admuser.php.
Description
FUDForum 3.0.9 - XSS / Remote Code Execution (CVE-2019-18873, CVE-2019-18839)
Readme
# FUDforum-XSS-RCE
FUDForum 3.0.9 - XSS / Remote Code Execution (CVE-2019-18873, CVE-2019-18839)

Multiple Stored XSS vulnerabilities have been found in FUDforum 3.0.9 that can result in remote code execution.

Stored XSS via username in forum: [Info](https://github.com/fuzzlove/FUDforum-XSS-RCE/blob/master/forumxss.md) | [Demo](https://youtu.be/fR8hVK1paks)

Stored XSS via useragent in admin panel: [Info](https://github.com/fuzzlove/FUDforum-XSS-RCE/blob/master/adminpanel.md) | [Demo](https://youtu.be/0gsJQ82TXw4)
File Snapshot

[4.0K] /data/pocs/8f61df6e1a2fed914d20204b81520a107579b0ac ├── [1.7K] adminpanel.md ├── [1.2K] forumxss.md ├── [8.4K] fud.js └── [ 521] README.md 0 directories, 4 files
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