CVE-2002-0621 in Commerce Server
Summary
by MITRE
Buffer overflow in the Office Web Components (OWC) package installer used by Microsoft Commerce Server 2000 allows remote attackers to cause the process to fail or run arbitrary code in the LocalSystem security context via certain input to the OWC package installer.
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Analysis
by VulDB Data Team • 06/27/2021
The vulnerability identified as CVE-2002-0621 represents a critical buffer overflow flaw within the Office Web Components (OWC) package installer component of Microsoft Commerce Server 2000. This issue resides in the installation process of OWC packages which are essential for web-based business applications. The flaw manifests when the installer processes certain malformed input data, creating a condition where memory boundaries are exceeded. According to CWE-121, this corresponds to a classic stack-based buffer overflow vulnerability that occurs when insufficient bounds checking is performed on user-supplied data. The vulnerability specifically impacts the installation phase of the OWC components, which are commonly used in commerce server environments to provide web-based reporting and data visualization capabilities.
The technical exploitation of this vulnerability enables remote attackers to manipulate the installer process through crafted input parameters that trigger the buffer overflow condition. When the installer encounters this malformed data, it fails to properly validate the input length before copying it into fixed-size memory buffers. This allows attackers to overwrite adjacent memory locations including return addresses and control data structures. The vulnerability is particularly dangerous because it operates within the context of the LocalSystem security level, which represents the highest privilege level available to Windows processes. This privilege escalation capability means that successful exploitation could result in complete system compromise and arbitrary code execution with the full privileges of the system root account.
The operational impact of CVE-2002-0621 extends beyond simple denial of service scenarios to encompass full system compromise and persistent backdoor access. Attackers leveraging this vulnerability could install malicious software, modify system files, or establish persistent access points within the target environment. The vulnerability affects Microsoft Commerce Server 2000 installations that utilize OWC packages, which were widely deployed in enterprise environments for business intelligence and reporting purposes. Organizations using these components faced significant risk as the attack vector required only remote access to the installation process, making it particularly attractive to threat actors. According to ATT&CK framework, this vulnerability maps to T1059 (Command and Scripting Interpreter) and T1068 (Exploitation for Privilege Escalation) techniques, as exploitation allows for command execution and privilege elevation within the target system. The vulnerability also aligns with T1203 (Exploitation for Client Execution) as it enables attackers to execute malicious code on client systems during the installation process.
Mitigation strategies for this vulnerability should encompass immediate patch deployment through Microsoft's security updates, which were released to address the buffer overflow conditions in the OWC installer. Organizations must ensure that all Commerce Server 2000 installations are updated with the latest security patches to prevent exploitation. Network segmentation and access controls should be implemented to limit exposure of the affected installation components to untrusted networks. Additional protective measures include implementing application whitelisting policies to restrict execution of untrusted installer packages and monitoring for anomalous installation activities. Security administrators should also consider disabling unnecessary OWC components when they are not actively required, reducing the attack surface. The vulnerability highlights the importance of proper input validation and memory management practices in software development, particularly for installation and configuration utilities that operate with elevated privileges. Organizations should conduct regular vulnerability assessments to identify and remediate similar issues in legacy systems, as many of these older components remain in production environments despite their known security weaknesses.