CVE-2005-0333 in LANChat Pro Revival
Summary
by MITRE
LANChat Pro Revival 1.666c allows remote attackers to cause a denial of service (application crash) via a malformed UDP packet.
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Analysis
by VulDB Data Team • 07/22/2017
The vulnerability identified as CVE-2005-0333 affects LANChat Pro Revival version 1.666c, a network communication application designed for local area network environments. This particular flaw represents a classic buffer overflow condition that occurs when the application fails to properly validate incoming UDP packet data. The vulnerability manifests when the software receives malformed UDP packets that exceed expected data boundaries, leading to unpredictable behavior and system instability.
The technical exploitation of this vulnerability involves sending specially crafted UDP packets to the target system running LANChat Pro Revival 1.666c. These malformed packets contain data structures that cause the application to attempt memory operations beyond allocated buffer limits, resulting in memory corruption and subsequent application crash. The flaw falls under the broader category of improper input validation, which is classified as CWE-121 in the Common Weakness Enumeration framework. This weakness specifically addresses the improper handling of buffer boundaries during input processing, making it a prime candidate for denial of service attacks.
From an operational perspective, this vulnerability presents significant risk to network availability and service integrity within local network environments where LANChat Pro Revival is deployed. The remote exploitation capability means that attackers need not have physical access to the target system, allowing for attacks from any network location that can reach the affected UDP port. The resulting denial of service impacts legitimate users who rely on the chat application for communication, potentially disrupting business operations and collaboration processes. Network administrators face the challenge of identifying and mitigating this vulnerability without disrupting normal network operations, as the attack can be executed silently without authentication requirements.
The attack pattern aligns with techniques documented in the MITRE ATT&CK framework under the T1498 tactic for network denial of service. This vulnerability demonstrates the importance of implementing proper input validation and robust error handling mechanisms in network applications. The flaw highlights the critical need for software developers to consider boundary conditions and input sanitization during the development lifecycle, particularly for applications handling network traffic. Organizations should implement network segmentation and access controls to limit exposure, while also ensuring timely patch management and software updates to address known vulnerabilities in legacy applications.
Mitigation strategies should include immediate patching of the affected software version, network-level filtering to block suspicious UDP traffic, and implementation of intrusion detection systems that can identify malformed packet patterns. The vulnerability underscores the importance of maintaining up-to-date security practices and conducting regular vulnerability assessments to identify similar weaknesses in network infrastructure components. Organizations utilizing legacy network applications must prioritize security upgrades and consider migrating to more modern communication platforms that incorporate proper security measures and regular security updates.