CVE-2004-0362 in Proventia
Summary
by MITRE
Multiple stack-based buffer overflows in the ICQ parsing routines of the ISS Protocol Analysis Module (PAM) component, as used in various RealSecure, Proventia, and BlackICE products, allow remote attackers to execute arbitrary code via a SRV_MULTI response containing a SRV_USER_ONLINE response packet and a SRV_META_USER response packet with long (1) nickname, (2) firstname, (3) lastname, or (4) email address fields, as exploited by the Witty worm.
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Analysis
by VulDB Data Team • 07/13/2025
The vulnerability described in CVE-2004-0362 represents a critical stack-based buffer overflow flaw within the ISS Protocol Analysis Module component of several network security products including RealSecure, Proventia, and BlackICE systems. This vulnerability specifically targets the ICQ protocol parsing routines that are integral to the protocol analysis functionality of these security appliances. The flaw manifests when the system processes SRV_MULTI response packets that contain embedded SRV_USER_ONLINE and SRV_META_USER response packets with excessively long user identification fields.
The technical implementation of this vulnerability involves the improper handling of user input data within the ICQ protocol parsing logic. When the system encounters SRV_MULTI response packets containing user information with unusually long nickname, firstname, lastname, or email address fields, the parsing routines fail to properly validate the length of these input parameters before copying them into fixed-size stack buffers. This classic buffer overflow condition occurs because the code does not enforce bounds checking on the user-supplied data, allowing attackers to overwrite adjacent stack memory locations.
The operational impact of this vulnerability is severe and directly exploited by the Witty worm, which demonstrates the real-world danger posed by this flaw. The Witty worm specifically targeted the buffer overflow conditions by crafting malicious SRV_MULTI response packets with oversized user identification fields, enabling remote code execution on vulnerable systems. This vulnerability affects the core functionality of network security appliances that rely on protocol analysis for threat detection and prevention, potentially allowing attackers to gain complete control over the affected systems.
The vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which describes the condition where insufficient bounds checking allows a buffer to be overwritten with data that extends beyond its allocated memory space. From an adversarial perspective, this flaw maps to several ATT&CK techniques including T1059 Command and Scripting Interpreter for executing malicious code, T1068 Exploitation for Linux and T1070 Indicator Removal on Host for maintaining access. The attack vector is remote and requires no authentication, making it particularly dangerous for network security infrastructure that processes untrusted protocol data from external sources.
Mitigation strategies for this vulnerability include immediate patching of affected ISS products, implementing network segmentation to limit exposure, and deploying intrusion prevention systems that can detect and block malformed ICQ protocol traffic. Organizations should also consider implementing input validation controls at network boundaries to prevent overly long user identification fields from reaching the vulnerable parsing routines. The vulnerability highlights the critical importance of proper input validation in protocol analysis systems and the necessity of regular security updates for network security appliances that process external protocol data streams.