CVE-2002-0942 in Log Explorer
Summary
by MITRE
Buffer overflows in Lugiment Log Explorer before 3.02 allow attackers with database permissions to execute arbitrary code via long arguments to the extended stored procedures (1) xp_logattach_StartProf, (2) xp_logattach_setport, or (3) xp_logattach.
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Analysis
by VulDB Data Team • 05/19/2025
The vulnerability identified as CVE-2002-0942 represents a critical buffer overflow flaw within the Lugiment Log Explorer software version 3.01 and earlier. This security weakness specifically affects the database component of the application and stems from improper input validation within three distinct extended stored procedures. The affected procedures include xp_logattach_StartProf, xp_logattach_setport, and xp_logattach, which are designed to handle database operations related to log file attachment and port configuration. These stored procedures fail to adequately validate the length of input arguments, creating an exploitable condition where maliciously crafted input can exceed the allocated buffer space and overwrite adjacent memory locations.
The technical implementation of this vulnerability resides in the database server environment where these extended stored procedures execute with elevated privileges. When an attacker with database permissions submits overly long arguments to any of these three procedures, the buffer overflow occurs within the memory allocation structure of the application's database processing layer. This condition allows for arbitrary code execution with the privileges of the database user account, potentially escalating to system-level access depending on the database server configuration and the permissions granted to the database user. The vulnerability manifests as a classic stack-based buffer overflow, where input data exceeds the fixed buffer size and corrupts adjacent memory, potentially allowing attackers to inject and execute malicious code.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a pathway to compromise entire database servers and potentially underlying systems. The requirement for database permissions means that the attack vector is typically limited to authenticated users who have access to the database, but this access level is often sufficient to cause significant damage. Attackers can leverage this vulnerability to gain unauthorized access to sensitive data, modify database content, or establish persistent access points within the network infrastructure. The vulnerability affects organizations that rely on Lugiment Log Explorer for database monitoring and log analysis, particularly those with database systems that lack proper input validation and security hardening measures. The exploitability of this vulnerability is enhanced by the fact that database users often possess elevated privileges, making the potential impact of successful exploitation particularly severe.
Mitigation strategies for CVE-2002-0942 should focus on immediate software updates to version 3.02 or later, where the buffer overflow conditions have been addressed through proper input validation and memory management. Organizations should implement database security best practices including the principle of least privilege, ensuring that database users have only the minimum permissions necessary for their operational requirements. Network segmentation and database firewalls can help limit the attack surface by restricting access to database servers. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of how improper input validation can lead to privilege escalation. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and command execution within database environments, highlighting the importance of database security controls and input sanitization measures in preventing such attacks. Regular security assessments and code reviews should be implemented to identify similar buffer overflow conditions in other database applications and stored procedures.