CVE-2007-4450 in Toribash
Summary
by MITRE
The server in Toribash 2.71 and earlier does not properly handle long commands, which allows remote attackers to trigger a protocol violation in which data is sent to other clients without a required LF character, as demonstrated by a SAY command. NOTE: the security impact of this violation is not clear, although it probably makes exploitation of CVE-2007-4449 easier.
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Analysis
by VulDB Data Team • 09/07/2018
The vulnerability described in CVE-2007-4450 affects the server component of Toribash version 2.71 and earlier, representing a protocol handling flaw that could potentially enable remote code execution or denial of service conditions. This issue stems from inadequate input validation mechanisms within the server's command processing logic, specifically when handling commands that exceed normal length parameters. The vulnerability manifests when the server receives excessively long commands, particularly the SAY command, which triggers an improper data transmission behavior that violates the expected communication protocol. The protocol violation occurs because the server fails to properly terminate transmitted data with the required line feed (LF) character, creating malformed data packets that could be interpreted incorrectly by connected clients.
The technical flaw in this vulnerability aligns with CWE-129, which addresses improper validation of input boundaries, and CWE-772, which deals with missing release of resource after effective lifetime. The server's failure to properly handle long commands represents a classic buffer overflow condition where input length validation is insufficient, allowing attackers to manipulate the protocol state through crafted command sequences. The absence of proper LF character termination in transmitted data creates a condition where subsequent data may be misinterpreted or improperly processed by client applications, potentially leading to unexpected behavior or crashes. This vulnerability operates at the application layer protocol level, making it particularly dangerous as it can disrupt normal communication patterns and potentially enable cascading failures throughout the networked system.
From an operational impact perspective, this vulnerability creates significant risks for Toribash server administrators and network operators who must contend with potential unauthorized access or service disruption. The protocol violation could allow attackers to inject malformed data into client communications, potentially leading to client-side crashes, data corruption, or more severe exploitation scenarios. While the direct security impact of the protocol violation itself is not definitively established, the vulnerability creates conditions that likely facilitate exploitation of related security issues such as CVE-2007-4449, which suggests a broader attack surface. The vulnerability affects the integrity of the communication channel between server and clients, potentially enabling man-in-the-middle attacks or data manipulation scenarios that could compromise the overall security posture of the networked gaming environment.
The mitigation strategies for this vulnerability should focus on implementing proper input validation and boundary checking mechanisms within the server's command processing pipeline. System administrators should immediately upgrade to Toribash versions that address this issue, as no effective workarounds exist for the underlying protocol handling flaw. Network monitoring should be enhanced to detect anomalous command lengths and malformed data transmissions that could indicate exploitation attempts. The vulnerability demonstrates the importance of adhering to secure coding practices and proper input sanitization as outlined in the OWASP Secure Coding Practices. Organizations should implement network segmentation and access controls to limit exposure, while also considering the broader implications for other networked applications that may share similar protocol handling vulnerabilities. This type of vulnerability falls under the ATT&CK technique T1071.004 for application layer protocol, highlighting the need for robust protocol validation and secure communication implementation in networked applications.