CVE-2007-5752 in Php-agtc Membership System
Summary
by MITRE
adduser.php in PHP-AGTC Membership (AGTC-Membership) System 1.1a does not require authentication, which allows remote attackers to create accounts via a modified form, as demonstrated by an account with admin (userlevel 4) privileges.
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Analysis
by VulDB Data Team • 11/11/2025
The vulnerability identified as CVE-2007-5752 affects the PHP-AGTC Membership system version 1.1a, specifically targeting the adduser.php component. This represents a critical authentication bypass flaw that fundamentally compromises the system's user management security model. The vulnerability stems from the absence of proper authentication checks within the user account creation endpoint, allowing any remote attacker to submit modified forms directly to the system without prior authorization. This weakness directly violates fundamental security principles and creates an exploitable entry point for unauthorized privilege escalation.
The technical implementation flaw lies in the adduser.php script's failure to validate user credentials or session tokens before processing account creation requests. Attackers can manipulate form parameters to specify elevated privileges, particularly targeting the admin userlevel 4 designation that grants maximum system access. This vulnerability operates under CWE-287 which classifies improper authentication as a critical weakness, and aligns with ATT&CK technique T1078.004 which covers valid accounts through compromised credentials. The system's lack of input validation and authentication verification creates a direct pathway for privilege escalation attacks.
The operational impact of this vulnerability is severe and multifaceted. Remote attackers can establish administrative accounts at will, potentially gaining complete control over the membership system and its associated data. This compromise extends beyond simple account creation to include full administrative privileges, enabling attackers to modify user permissions, access sensitive membership information, and potentially exploit the system for further attacks against connected infrastructure. The vulnerability affects the integrity and availability of the membership database, as attackers can manipulate user roles and potentially introduce malicious accounts with elevated privileges. Organizations relying on this system face significant risk of unauthorized access and data compromise.
Mitigation strategies must address both immediate and long-term security concerns. The primary solution involves implementing robust authentication checks within the adduser.php script, requiring valid administrative credentials before processing any account creation requests. This includes enforcing session validation, input sanitization, and proper access control mechanisms. Organizations should also implement rate limiting and monitoring of account creation activities to detect anomalous behavior. The fix should align with NIST SP 800-53 security controls, particularly those related to access control and authentication. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other system components. System administrators should also consider implementing network segmentation and firewall rules to limit access to administrative endpoints, reducing the attack surface and providing defense-in-depth protection against similar authentication bypass vulnerabilities.