Understanding the vDesk hangupphp3 Exploit: Vulnerability Analysis and Mitigation
The F5 APM virtual server intercepts these requests, notes the mismatch, and responds with an individual HTTP/1.1 302 Found header pointing to /vdesk/hangup.php3 . vdesk hangupphp3 exploit
: Ensure any legacy F5 FirePass systems are updated past version 6.0.2 Hotfix 3 or replaced, as these are considered critically end-of-life and highly vulnerable. specific proof-of-concept code for one of these vulnerabilities, or are you trying to a specific system? endpoint, allowing non-privileged users to export full user
endpoint, allowing non-privileged users to export full user lists. National Institute of Standards and Technology (.gov) Recommendation To the uninitiated, it looks like a remnant
/vdesk/hangup.php3?sess=../../../../etc/passwd%00
If a client sends an HTTP request with a host header that doesn't match the APM configuration, the system issues a 302 Redirect /vdesk/hangup.php3 to ensure the session is cleared for security. Logout Procedures:
If you have ever peeked at your web server logs or run a vulnerability scanner, you have likely encountered a curious request for /vdesk/hangup.php3 . To the uninitiated, it looks like a remnant of the early 2000s web—a .php3 extension in a modern world. But for security researchers and sysadmins, it is the digital signature of the F5 BIG-IP ecosystem. What is it?