CVE-2019-18873
FUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 8.15% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-78, CWE-79
- Affected
- fudforum/fudforum
- Source
- cve@mitre.org
References
- https://github.com/fuzzlove/FUDforum-XSS-RCEExploit, Third Party Advisory
- https://sourceforge.net/p/fudforum/code/6321/Third Party Advisory
- https://github.com/fuzzlove/FUDforum-XSS-RCEExploit, Third Party Advisory
- https://sourceforge.net/p/fudforum/code/6321/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.