CVE-2005-0693 in Chaser
Summary
by MITRE
Buffer overflow in JoWood Chaser 1.50 and earlier allows remote attackers to cause a denial of service (client or server crash) and execute arbitrary code via a long nickname.
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Analysis
by VulDB Data Team • 03/26/2019
The vulnerability identified as CVE-2005-0693 represents a critical buffer overflow flaw discovered in JoWood Chaser versions 1.50 and earlier. This software package was a popular multiplayer game client that enabled users to connect to online gaming servers and engage in competitive gameplay. The buffer overflow vulnerability specifically manifests within the nickname handling mechanism, which serves as a fundamental user identification feature within the game's network communication protocols.
The technical exploitation of this vulnerability occurs when a remote attacker crafts a maliciously long nickname string that exceeds the allocated buffer space within the JoWood Chaser client or server application. This buffer overflow condition arises from inadequate input validation and bounds checking within the software's memory management routines. When the application attempts to store the excessively long nickname string in memory, it overflows into adjacent memory segments, potentially corrupting critical program data structures and executable code. The vulnerability falls under CWE-121, which categorizes buffer overflow conditions where insufficient bounds checking allows data to overwrite adjacent memory locations.
The operational impact of this vulnerability extends beyond simple denial of service to encompass full remote code execution capabilities. Attackers can leverage this vulnerability to crash client applications or game servers, effectively disrupting gameplay for legitimate users and potentially causing complete service outages. More critically, the buffer overflow enables arbitrary code execution, allowing malicious actors to gain unauthorized control over affected systems. This represents a severe security compromise that transforms a simple gaming application into a potential attack vector for broader network infiltration.
From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1203, which involves gaining access to systems through exploitation of software vulnerabilities. The attack surface is particularly concerning given that JoWood Chaser was widely used in multiplayer gaming environments where users frequently connect to public servers. The remote nature of the exploit means that attackers do not require physical access to target systems, making the vulnerability particularly dangerous in networked gaming environments where user-generated content is processed without proper sanitization.
Mitigation strategies for this vulnerability should encompass both immediate remediation and long-term architectural improvements. The most effective immediate solution involves updating to JoWood Chaser version 1.51 or later, which includes proper input validation and buffer size enforcement. Organizations should implement strict nickname length limitations and character set restrictions to prevent exploitation. Additionally, network segmentation and intrusion detection systems can help monitor for suspicious traffic patterns that may indicate attempted exploitation of this vulnerability. The implementation of address space layout randomization and stack canaries would provide additional defense-in-depth measures against similar buffer overflow exploits in future software versions.
This vulnerability demonstrates the critical importance of proper input validation in networked applications and highlights how seemingly benign user interface elements like nickname fields can become attack vectors when inadequate security measures are implemented. The incident underscores the need for comprehensive security testing of all input handling mechanisms, particularly in applications that process user-generated content in networked environments where remote exploitation is possible.