The vdesk hangupphp3 exploit is a classic attack. The my.logon.php3 script, which handles user login requests, failed to properly sanitize or encode user-supplied input before reflecting it back to the browser in the HTTP response.
To drop or safely route misconfigured automated traffic before it strains APM processing layers, you can build a Centralized Policy Management (CPM) rule using the F5 BIG-IP Configuration Utility : Navigate to > Policies and click Create . Set the rule condition to evaluate http-host .
Deploy updated F5 hotfixes or migrate to modern BIG-IP APM solutions. 🛡️ Option 2: The Defensive Alert (for IT Admins) vdesk hangupphp3 exploit
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.
Once an attacker had an active administrator session, they could modify VPN access policies, create new user accounts, or even alter firewall rules. This allowed them to intended to protect the corporate network. The vdesk hangupphp3 exploit is a classic attack
/vdesk/hangup.php3 script is a standard logout component used in F5 BIG-IP Access Policy Manager (APM) FirePass SSL VPN
| CVE ID | Vulnerability Type | Severity (CVSS) | Affected Versions | | :--- | :--- | :--- | :--- | | CVE-2022-45172 | Broken Access Control (Privilege Escalation) | 9.8 (CRITICAL) | ≤ v018 | | CVE-2022-45174 | 2FA Bypass for SAML Users | 9.8 (CRITICAL) | ≤ v018 | | CVE-2022-45173 | 2FA Bypass via Client-Side Manipulation | 9.8 (CRITICAL) | ≤ v018 | | CVE-2022-45171 | Unrestricted Dangerous File Upload | 8.8 (HIGH) | ≤ v018 | | CVE-2022-45170 | Cryptographic Issue (File Decryption) | 6.5 (MEDIUM) | ≤ v018 | | CVE-2022-45168 | 2FA Backup Code Generation Before TOTP Check | 6.5 (MEDIUM) | ≤ v018 | | CVE-2022-45176 | Stored Cross-Site Scripting (XSS) | 5.4 (MEDIUM) | ≤ v018 | | CVE-2022-45177 | Observable Response Discrepancy (Information Disclosure) | 7.5 (HIGH) | ≤ v031 | | CVE-2022-45179 | Basic XSS via Reminders | 5.4 (MEDIUM) | ≤ v031 | Set the rule condition to evaluate http-host
This vulnerability allows an with no privileges whatsoever to elevate themselves to full administrator access. The flaw exists in the authorization logic of multiple API endpoints:
Session hijacking or unauthorized administrative actions.
In legacy PHP development (particularly versions using the .php3 extension), developers frequently used native execution functions like exec() , passthru() , or system() to interact with the underlying host operating system. When user-supplied parameters are passed directly into these functions without sanitization, an attacker can append malicious commands, resulting in . Mechanics of the Vulnerability
The VDesk Hangup PHP 3 exploit involves sending a specially crafted request to the Hangup PHP 3 plugin. The request contains malicious PHP code that is designed to exploit the vulnerability. When the plugin receives the request, it fails to sanitize the input, allowing the malicious code to be executed on the server.