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.

Weakness classification

• CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Primary references

• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory