CVE-2000-0200 in Clip Art Gallery
Summary
by MITRE
Buffer overflow in Microsoft Clip Art Gallery allows remote attackers to cause a denial of service or execute commands via a malformed CIL (clip art library) file, aka the "Clip Art Buffer Overrun" vulnerability.
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Analysis
by VulDB Data Team • 03/25/2025
The CVE-2000-0200 vulnerability represents a critical buffer overflow flaw within Microsoft Clip Art Gallery software that emerged during the early 2000s era of Windows computing. This vulnerability specifically targets the handling of CIL (clip art library) files, which were commonly used within Microsoft Office applications and various Windows graphical interfaces for storing and displaying clip art content. The flaw manifests when the application processes malformed CIL files that contain excessive data beyond the allocated buffer space, creating an exploitable condition that can be leveraged by remote attackers to compromise system integrity. The vulnerability falls under the category of software security flaws that have been extensively documented in the Common Weakness Enumeration (CWE) database as CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations.
The technical implementation of this vulnerability exploits the lack of proper input validation within the Clip Art Gallery's file parsing routines. When a malicious CIL file is processed, the application fails to adequately verify the size or structure of the incoming data before copying it into fixed-size memory buffers. This allows an attacker to craft a specially designed file that exceeds the buffer capacity, causing the program to overwrite adjacent memory locations including return addresses, function pointers, or other critical control data. The overflow can potentially redirect program execution flow to malicious code placed within the overflowed buffer or cause the application to crash entirely, resulting in denial of service conditions. According to the ATT&CK framework, this vulnerability aligns with technique T1059.007 for command and scripting interpreter, as successful exploitation could enable remote code execution, and T1499.004 for network denial of service, when the vulnerability results in application crashes or system instability.
The operational impact of CVE-2000-0200 extends beyond simple denial of service scenarios to encompass potential remote code execution capabilities that could allow attackers to gain unauthorized access to affected systems. Organizations running vulnerable versions of Microsoft Clip Art Gallery were at significant risk when users opened maliciously crafted CIL files, particularly in environments where email attachments or file sharing systems could deliver such payloads. The vulnerability's remote exploitation capability made it particularly dangerous in corporate networks where users might inadvertently encounter malicious files through phishing campaigns or compromised websites. The attack surface was further expanded by the widespread use of Clip Art Gallery across various Microsoft Office applications, increasing the potential number of vulnerable entry points. Security professionals noted that the vulnerability was particularly concerning because it could be exploited through multiple vectors including email attachments, web downloads, and network file shares, making comprehensive protection challenging.
Mitigation strategies for CVE-2000-0200 required immediate patching of affected Microsoft software versions, as Microsoft released security updates to address the buffer overflow condition. System administrators needed to implement strict file validation policies, particularly for clip art files and other multimedia content that could trigger the vulnerable code paths. Network segmentation and access controls were recommended to limit the potential spread of exploitation within corporate environments. The vulnerability highlighted the importance of input validation and bounds checking in software development practices, leading to enhanced security guidelines and secure coding standards within Microsoft's development lifecycle. Organizations were advised to monitor for exploitation attempts through network intrusion detection systems and implement automated patch management processes to ensure timely deployment of security fixes. The incident also underscored the need for regular security assessments of legacy applications that might contain similar buffer overflow vulnerabilities, as many older software components continued to pose risks in enterprise environments.