Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fudforum | Fudforum | 3.0.9 |
Related Weaknesses (CWE)
References
- https://github.com/fuzzlove/FUDforum-XSS-RCEExploitThird Party Advisory
- https://sourceforge.net/p/fudforum/code/6321/Third Party Advisory
- https://github.com/fuzzlove/FUDforum-XSS-RCEExploitThird Party Advisory
- https://sourceforge.net/p/fudforum/code/6321/Third Party Advisory
FAQ
What is CVE-2019-18873?
CVE-2019-18873 is a vulnerability with a CVSS score of 9.0 (CRITICAL). 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...
How severe is CVE-2019-18873?
CVE-2019-18873 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-18873?
Check the references section above for vendor advisories and patch information. Affected products include: Fudforum Fudforum.