CVE-2006-2587 in PunkBuster
Summary
by MITRE
Buffer overflow in the WebTool HTTP server component in (1) PunkBuster before 1.229, as used by multiple products including (2) America s Army 1.228 and earlier, (3) Battlefield 1942 1.158 and earlier, (4) Battlefield 2 1.184 and earlier, (5) Battlefield Vietnam 1.150 and earlier, (6) Call of Duty 1.173 and earlier, (7) Call of Duty 2 1.108 and earlier, (8) DOOM 3 1.159 and earlier, (9) Enemy Territory 1.167 and earlier, (10) Far Cry 1.150 and earlier, (11) F.E.A.R. 1.093 and earlier, (12) Joint Operations 1.187 and earlier, (13) Quake III Arena 1.150 and earlier, (14) Quake 4 1.181 and earlier, (15) Rainbow Six 3: Raven Shield 1.169 and earlier, (16) Rainbow Six 4: Lockdown 1.093 and earlier, (17) Return to Castle Wolfenstein 1.175 and earlier, and (18) Soldier of Fortune II 1.183 and earlier allows remote attackers to cause a denial of service (application crash) via a long webkey parameter.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 04/12/2025
The vulnerability described in CVE-2006-2587 represents a critical buffer overflow condition within the WebTool HTTP server component of PunkBuster software, which was widely integrated into numerous first-person shooter gaming platforms. This flaw manifests as an insufficient input validation mechanism that fails to properly handle excessively long webkey parameters, creating a scenario where malicious actors can exploit the system by sending malformed data that exceeds the allocated buffer space. The vulnerability affects a broad spectrum of gaming titles spanning multiple generations of popular franchises including America's Army, Battlefield series, Call of Duty, Doom 3, Far Cry, and many others, indicating a systemic issue within the PunkBuster implementation that was present across various versions of these applications.
The technical nature of this buffer overflow vulnerability places it squarely within the scope of CWE-121, which addresses stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios. The exploitation mechanism relies on the fundamental principle that the WebTool component does not perform adequate bounds checking on incoming webkey parameters, allowing an attacker to overwrite adjacent memory locations in the application's execution stack. This lack of proper input sanitization creates a pathway for remote code execution or at minimum application instability leading to denial of service conditions. The vulnerability is particularly concerning given that it operates at the HTTP server level, meaning that attackers can leverage network-based attacks without requiring local system access or elevated privileges.
The operational impact of this vulnerability extends beyond simple application crashes to encompass broader security implications for gaming infrastructure and networked gaming environments. When exploited successfully, the buffer overflow causes the affected applications to crash, effectively rendering the game unplayable for affected users and potentially disrupting online gaming sessions. From an attacker perspective, this vulnerability enables denial of service attacks against gaming servers and client applications, which can severely impact the gaming experience and potentially compromise the integrity of competitive gaming environments. The widespread adoption of PunkBuster across multiple gaming platforms means that a single exploitation vector can potentially affect thousands of users simultaneously, creating cascading effects throughout gaming communities and online platforms.
Mitigation strategies for this vulnerability should focus on immediate patching of the PunkBuster components across all affected applications, as well as implementing network-level protections such as input validation at proxy or firewall levels. Organizations should consider implementing intrusion detection systems that can identify anomalous webkey parameter patterns and automatically block suspicious traffic. The vulnerability also highlights the importance of secure coding practices, particularly in legacy software systems where buffer overflow protections were not adequately implemented. Security teams should conduct comprehensive vulnerability assessments of all gaming-related software components to identify similar issues that may exist within other subsystems, as this represents a classic example of how legacy code can harbor critical security flaws that persist across multiple product generations. Additionally, the incident underscores the necessity of regular security updates and proper input validation mechanisms that align with industry best practices established by frameworks such as the OWASP Top Ten and NIST cybersecurity guidelines.