CVE-2005-0047 in Windows
Summary
by MITRE
Windows 2000, XP, and Server 2003 does not properly "validate the use of memory regions" for COM structured storage files, which allows attackers to execute arbitrary code, aka the "COM Structured Storage Vulnerability."
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Analysis
by VulDB Data Team • 07/05/2025
The CVE-2005-0047 vulnerability represents a critical memory validation flaw in Microsoft Windows operating systems including Windows 2000, XP, and Server 2003. This vulnerability specifically targets the COM structured storage component which is fundamental to how Windows handles compound document formats and file system operations. The flaw stems from inadequate validation of memory regions when processing COM structured storage files, creating a condition where maliciously crafted files can trigger improper memory handling during file operations. This vulnerability falls under the CWE-125 weakness category, which describes out-of-bounds read conditions that can lead to arbitrary code execution. The issue is particularly dangerous because COM structured storage is widely used throughout the Windows ecosystem for various file formats and system operations, making exploitation opportunities abundant.
The technical exploitation of this vulnerability occurs when a user opens or processes a specially crafted COM structured storage file that contains malformed memory references. The operating system's COM structured storage handler fails to properly validate memory boundaries, allowing attackers to manipulate memory regions and potentially overwrite critical system memory locations. This memory corruption can be leveraged to execute arbitrary code with the privileges of the compromised process, typically resulting in system compromise when executed with user-level privileges. The vulnerability is classified under the ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation often involves executing malicious code through compromised applications that utilize COM structured storage. The flaw demonstrates the classic pattern of buffer overflow vulnerabilities where improper input validation leads to memory corruption and privilege escalation opportunities.
The operational impact of CVE-2005-0047 extends beyond simple code execution, as it enables attackers to gain persistent access to affected systems. Since the vulnerability affects core Windows components, exploitation can occur through various attack vectors including email attachments, web downloads, or file transfers from compromised systems. The widespread adoption of Windows 2000, XP, and Server 2003 made this vulnerability particularly dangerous as it affected millions of systems across enterprise and consumer environments. Attackers could leverage this vulnerability to establish backdoors, escalate privileges, or deploy additional malware payloads. The vulnerability's impact is amplified by the fact that COM structured storage is used extensively in Microsoft Office applications, making it possible for attackers to exploit this through seemingly benign document operations. Organizations running these affected operating systems faced significant risk of unauthorized access and data breaches, as the vulnerability could be exploited without user interaction in many scenarios.
Mitigation strategies for CVE-2005-0047 focus on both immediate patching and operational security measures. Microsoft released security updates that addressed the memory validation issues in COM structured storage components, requiring administrators to deploy these patches promptly across all affected systems. The vulnerability highlights the importance of proper memory management practices and input validation in software development, particularly for system-critical components. Organizations should implement network segmentation and access controls to limit the potential impact of successful exploitation, while also monitoring for suspicious file operations and process behaviors. Security professionals should consider implementing application whitelisting policies that restrict execution of untrusted COM structured storage files. Additionally, regular system updates and vulnerability assessments become critical for maintaining security posture, as this vulnerability demonstrates the ongoing need for proper software lifecycle management and security testing. The incident underscored the necessity of robust software quality assurance processes and memory safety practices in operating system development, aligning with industry standards for secure coding practices and vulnerability management.