CVE-2005-3064 in MultiTheftAuto
Summary
by MITRE
MultiTheftAuto 0.5 patch 1 and earlier does not properly verify client privileges when running command 40, which allows remote attackers to change or delete the message of the day (motd.txt).
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 07/12/2018
The vulnerability described in CVE-2005-3064 affects MultiTheftAuto version 0.5 patch 1 and earlier implementations, representing a critical access control flaw that undermines the security posture of multiplayer gaming environments. This issue stems from inadequate privilege verification mechanisms within the game server's command processing system, specifically concerning command 40 which is responsible for message of the day management. The flaw exists in the server-side validation logic where client requests to modify or delete motd.txt files bypass proper authentication checks, allowing unauthorized users to execute privileged operations through seemingly innocuous network communications.
The technical implementation of this vulnerability demonstrates a classic privilege escalation weakness that aligns with CWE-285, which addresses improper authorization in software systems. When command 40 is executed by a client, the server fails to validate whether the requesting user possesses the necessary administrative privileges before allowing modifications to the motd.txt file. This represents a failure in input validation and access control enforcement, where the system assumes legitimate authorization based on command execution rather than verifying user credentials or roles. The vulnerability operates at the application layer of the network stack, making it particularly dangerous as it can be exploited remotely without requiring physical access or prior authentication to the system.
From an operational perspective, this vulnerability creates significant risks for game server administrators and players alike. Attackers can exploit this flaw to modify server messages, potentially injecting malicious content, defacing server communications, or disrupting normal gameplay operations. The ability to delete or change motd.txt files can serve as a vector for more sophisticated attacks, including the insertion of phishing links, malware distribution points, or social engineering content that could compromise player systems. The impact extends beyond simple message modification, as it undermines the trust model of the multiplayer gaming environment and creates opportunities for broader system compromise.
The exploitation of this vulnerability aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to privilege escalation and command and control operations. The flaw enables attackers to perform unauthorized administrative actions within the game environment, potentially serving as a stepping stone for more extensive compromise. Security professionals should note that this vulnerability represents an outdated flaw that highlights the importance of proper input validation and privilege checking in networked applications. The issue demonstrates how seemingly minor oversights in access control can create significant security risks in multiplayer systems, emphasizing the need for comprehensive security testing and regular updates to address such vulnerabilities in gaming infrastructure and similar real-time collaborative applications.