CVE-2019-18873

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.

• CVE ID
• CVE-2019-18873

• Assigner
• cve@mitre.org

• Vulnerability Status
• Analyzed

• Published Version
• 2019-11-12T02:15:10

• Last Modified Date
• 2019-11-15T19:05:05

• Version
• 2.0

• Vector String
• AV:N/AC:M/Au:S/C:C/I:C/A:C

• Access Vector
• NETWORK

• Access Compatibility
• MEDIUM

• Authentication
• SINGLE

• Confidentiality Impact
• COMPLETE

• Integrity Impact
• COMPLETE

• Availability Impact
• COMPLETE

• Base Score
• 8.5

• Severity
• HIGH

• Exploitability Score
• 6.8

• Impact Score
• 10

• Version
• 3.1

• Vector String
• CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

• Attack Vector
• NETWORK

• Attack Compatibility
• LOW

• Privileges Required
• LOW

• User Interaction
• REQUIRED

• Scope
• CHANGED

• Confidentiality Impact
• HIGH

• Availability Impact
• HIGH

• Base Score
• 9

• Base Severity
• CRITICAL

• Exploitability Score
• 2.3

• Impact Score
• 6