Vdesk Hangupphp3 Exploit [portable] 〈100% INSTANT〉

The URL /vdesk/hangup.php3 is a standard endpoint used by . While it is often discussed in the context of session management, there are specific security concerns associated with it. 1. Purpose of /vdesk/hangup.php3

: hangup.php3 script in the vDesk web root vdesk hangupphp3 exploit

: If the script must remain active, rewrite it to enforce strict input validation using PHP functions like escapeshellarg() or switch to built-in PHP session management functions. The URL /vdesk/hangup

If you are seeing high volumes of traffic hitting this endpoint, it may indicate automated scanners testing for misconfigured host headers or expired sessions. Recommendations include: Purpose of /vdesk/hangup

Despite its niche-sounding name, this exploit leverages a fundamental weakness in how PHP handles process forking, session write locks, and abrupt termination signals (SIGHUP). This article provides a comprehensive analysis of the vDesk HangupPHP3 exploit—what it is, how it works, its potential impact on modern infrastructures, and step-by-step remediation strategies.

| CVE ID | Remotely Exploitable | Requires Authentication | Public Exploit Available | Remediation Urgency | | :--- | :--- | :--- | :--- | :--- | | CVE-2022-45172 | Yes | No | No public PoC identified | CRITICAL | | CVE-2022-45173 | Yes | No | No public PoC identified | CRITICAL | | CVE-2022-45174 | Yes | No | No public PoC identified | CRITICAL | | CVE-2022-45171 | Yes | Yes | No public PoC identified | HIGH | | CVE-2022-45170 | Yes | Yes | No public PoC identified | MEDIUM | | CVE-2022-45176 | Yes | Yes | No public PoC identified | MEDIUM |

: Configure appropriate session timeouts, implement robust logout mechanisms, and monitor for hangup_error=1 patterns that indicate session termination failures.