CVE-2006-2401 in Outgun
Summary
by MITRE
The leetnet functions (leetnet/rudp.cpp) in Outgun 1.0.3 bot 2 and earlier allow remote attackers to cause a denial of service (application crash) via packets with incorrect message sizes, which triggers a buffer over-read.
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Analysis
by VulDB Data Team • 07/26/2018
The vulnerability identified as CVE-2006-2401 resides within the leetnet functions implemented in the rudp.cpp file of Outgun version 1.0.3 bot 2 and earlier. This represents a classic buffer over-read condition that occurs when the application processes network packets containing malformed message size indicators. The flaw specifically affects the remote UDP communication handling mechanism that forms part of the bot's network infrastructure, creating a potential attack surface for malicious actors seeking to disrupt service availability.
The technical implementation of this vulnerability stems from inadequate input validation within the leetnet packet processing routines. When the application receives network packets with incorrect or malformed message size fields, the system attempts to read beyond the allocated buffer boundaries during packet parsing operations. This buffer over-read condition directly violates fundamental memory safety principles and creates an exploitable path for remote code execution or system instability. The vulnerability manifests as an application crash rather than a more sophisticated exploit, but the denial of service impact remains significant for any system relying on this bot functionality.
From an operational perspective, this vulnerability presents a substantial risk to systems utilizing Outgun 1.0.3 bot 2 or earlier versions, particularly in environments where continuous service availability is critical. The remote nature of the attack means that adversaries can trigger the denial of service condition without requiring physical access or local privileges, making it an attractive target for attackers seeking to disrupt network communications or system operations. The impact extends beyond simple service interruption to potentially compromise the reliability of network infrastructure that depends on this bot software for legitimate operations.
The vulnerability aligns with CWE-129, which addresses improper validation of length of input buffers, and exhibits characteristics consistent with ATT&CK technique T1499.004 for network denial of service attacks. Security professionals should prioritize patching affected systems to address this vulnerability, as the outdated nature of the software suggests potential additional unpatched vulnerabilities within the same codebase. Organizations should implement network segmentation and monitoring to detect anomalous packet patterns that might indicate exploitation attempts, while also ensuring that legacy software components are properly deprecated or upgraded to modern secure versions that address these fundamental buffer handling issues.