CVE-2008-3286 in SWAT 4
Summary
by MITRE
SWAT 4 1.1 and earlier allows remote attackers to cause a denial of service (daemon crash) via a (1) VERIFYCONTENT or (2) GAMECONFIG command sent to the server before user session initialization, which triggers a NULL pointer dereference; or (3) a GAMESPYRESPONSE command followed by a long RS string.
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Analysis
by VulDB Data Team • 01/19/2025
The vulnerability described in CVE-2008-3286 affects SWAT 4 version 1.1 and earlier, presenting a significant remote denial of service risk that can compromise server stability and availability. This weakness stems from improper input validation and memory management within the game server's command processing mechanisms, specifically targeting the pre-session initialization phase where critical server operations occur. The vulnerability demonstrates a classic software flaw that can be exploited by malicious actors to disrupt legitimate service operations without requiring authentication or elevated privileges.
The technical implementation of this vulnerability involves three distinct attack vectors that all lead to the same outcome of daemon crash. The first vector utilizes VERIFYCONTENT commands sent to the server before user session initialization, while the second employs GAMECONFIG commands in the same pre-initialization context. Both of these command sequences trigger a NULL pointer dereference condition, a common programming error that occurs when software attempts to access memory through a pointer that has not been properly initialized or allocated. The third vector involves the GAMESPYRESPONSE command combined with an excessively long RS string parameter, creating a buffer overflow scenario that similarly results in system instability. These attack methods leverage the server's lack of proper input sanitization and boundary checking during early connection phases.
From an operational perspective, this vulnerability presents a severe risk to gaming infrastructure and online services that rely on SWAT 4 server deployments. The remote exploitation capability means that attackers can disrupt server operations from anywhere on the network, potentially affecting multiple players simultaneously and causing significant service degradation. The timing of the attack, occurring before user session initialization, makes it particularly dangerous as it can prevent legitimate users from accessing the service entirely, effectively creating a persistent denial of service condition that can last until the server is manually restarted or the vulnerability is patched. This type of vulnerability directly impacts the availability aspect of the CIA triad and can be exploited to create service interruptions that may last for extended periods.
The underlying flaw in this vulnerability aligns with CWE-476, which specifically addresses NULL pointer dereference conditions in software implementations. This weakness represents a fundamental programming error that occurs when developers fail to properly validate pointer values before dereferencing them, creating opportunities for attackers to manipulate program flow and cause unexpected behavior. The vulnerability also demonstrates characteristics that would be categorized under the ATT&CK framework's T1499.004 technique, which involves network denial of service attacks targeting game servers and applications. The exploitability of this vulnerability requires minimal technical expertise, making it particularly dangerous as it can be leveraged by attackers with basic networking knowledge to disrupt gaming services.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and boundary checking mechanisms within the server software. System administrators should immediately upgrade to patched versions of SWAT 4 that address these memory management issues and implement network-level filtering to restrict potentially malicious command sequences. The recommended approach includes deploying intrusion prevention systems that can detect and block suspicious command patterns, particularly those involving the vulnerable commands mentioned in the CVE description. Additionally, implementing proper error handling and memory management practices, including null pointer checks and buffer overflow protections, will help prevent similar issues from occurring in other software components. Organizations should also consider implementing monitoring solutions that can detect unusual server behavior patterns that might indicate exploitation attempts, providing early warning capabilities for potential denial of service attacks.