CVE-2006-6609 in Nexuiz
Summary
by MITRE
Nexuiz before 2.2.1 allows remote attackers to cause a denial of service (resource exhaustion or crash) via unspecified vectors related to "fake players." NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 07/16/2019
The vulnerability identified as CVE-2006-6609 affects Nexuiz versions prior to 2.2.1, representing a significant security flaw that enables remote attackers to execute denial of service attacks against affected systems. This issue specifically relates to the game's handling of "fake players" which creates a resource exhaustion condition that can lead to system crashes or complete service unavailability. The vulnerability's classification as a remote attack vector means that malicious actors can exploit this weakness without requiring physical access to the target system, making it particularly dangerous in networked gaming environments where multiple players connect to shared servers.
The technical implementation of this vulnerability stems from inadequate input validation and resource management within the game's networking stack. When malicious actors create or manipulate "fake players" in the game environment, the system fails to properly validate these entities, leading to excessive resource consumption that can overwhelm server capabilities. This flaw operates at the application layer and affects the game's ability to maintain proper state management for connected clients. The unspecified nature of the exact attack vectors suggests that multiple exploitation methods may exist, potentially including malformed player data, excessive connection requests, or manipulated game state information that triggers the resource exhaustion condition.
From an operational perspective, this vulnerability poses serious risks to gaming servers and multiplayer environments that rely on Nexuiz versions before 2.2.1. The denial of service impact can disrupt gameplay for legitimate users, potentially causing server downtime that affects entire gaming communities or competitive events. Attackers can leverage this weakness to repeatedly crash servers or exhaust system resources, effectively making the gaming service unavailable to legitimate players. The vulnerability's severity is amplified by the fact that it can be exploited remotely, meaning that attackers can target servers from anywhere on the internet without requiring local network access or privileged credentials.
The mitigation strategies for this vulnerability primarily focus on upgrading to Nexuiz version 2.2.1 or later, which contains the necessary patches to address the resource management issues. System administrators should implement regular update schedules to ensure that all gaming servers remain current with security patches. Network monitoring should be enhanced to detect unusual patterns of player connections or resource usage that might indicate exploitation attempts. Additionally, implementing rate limiting and connection validation mechanisms can help reduce the impact of such attacks by limiting the number of simultaneous fake player connections that can be established. This vulnerability aligns with CWE-400, which addresses resource exhaustion issues, and could potentially map to ATT&CK technique T1499.004 related to network denial of service attacks. Organizations should also consider implementing intrusion detection systems that can identify and block suspicious network traffic patterns associated with this type of exploitation.