Cybersecurity analysts often encounter confusing exploit names. "HangupPHP3" is a rather than a specific CVE. Several CVEs map to variations:
The core of the vulnerability lies in legacy PHP code handling session termination or "hang-up" procedures for remote desktop users. In older iterations of web-based control panels, developers frequently used the .php3 extension (representing PHP version 3 functionality) or maintained legacy scripts for backward compatibility with older client software. The Root Cause: Input Validation Failure
The /vdesk/hangup.php3 script is designed to clear a user's session and cookies . On F5 BIG-IP APM systems, it acts as a "logout" trigger. It is the final destination for a user ending their session, or the immediate destination for a client that fails an Access Policy . The "Exploit" History vdesk hangupphp3 exploit
If you are seeing "vdesk" in modern contexts, it may refer to LIVEBOX Collaboration vDesk CVE-2022-45180
Implement an at the Virtual Server level to drop traffic immediately if the Host header does not match internal domain records, bypassing script processing entirely. Session Tracking Vulnerabilities Failure to force-expire sessions across headers. In older iterations of web-based control panels, developers
hangupphp3 is a legacy vulnerability found in older versions of the vDesk bulletin board system. It is a classic example of Remote Code Execution (RCE)
What and web server software (Apache, Nginx, IIS) you run. It is the final destination for a user
Specifically used for ending sessions, this script often lacked the security tokens needed to prevent CSRF.
Legacy components such as /vdesk/admincon/webyfiers.php and /vdesk/admincon/index.php were discovered to be vulnerable to remote Cross-Site Scripting. Attackers could inject arbitrary scripts using parameters like css_exceptions or sql_matchscope .
: The attacker tricks an authenticated administrator into clicking the crafted link.
If successfully exploited, the consequences to an organization are severe: