CVE-2003-0004 in Windows
Summary
by MITRE
Buffer overflow in the Windows Redirector function in Microsoft Windows XP allows local users to execute arbitrary code via a long parameter.
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Analysis
by VulDB Data Team • 08/26/2025
The vulnerability described in CVE-2003-0004 represents a critical buffer overflow flaw within the Windows Redirector function of Microsoft Windows XP operating systems. This issue specifically affects the server message block smb protocol implementation that handles network file sharing operations. The Windows Redirector component serves as a crucial interface between local applications and remote file servers, making it a prime target for exploitation. The vulnerability stems from inadequate input validation within the redirector service when processing network share parameters, creating a condition where maliciously crafted long parameter strings can overwrite adjacent memory locations.
This buffer overflow occurs when the Windows Redirector function receives a parameter string that exceeds the allocated buffer space, typically due to insufficient bounds checking mechanisms. The flaw allows an attacker to manipulate memory layout by providing an excessively long parameter value, which can overwrite critical program variables, return addresses, or function pointers. When the vulnerable function attempts to process this oversized parameter, it writes data beyond the intended buffer boundaries, potentially corrupting the program's execution flow. The vulnerability is particularly dangerous because it operates within the kernel-level components of the operating system, enabling local users to escalate privileges and execute arbitrary code with the highest system privileges.
The operational impact of this vulnerability extends beyond simple code execution, as it can be leveraged for privilege escalation attacks and persistent system compromise. Attackers can exploit this flaw to gain unauthorized access to system resources, modify critical files, or establish backdoor access points within the network infrastructure. The Windows Redirector function's role in handling network shares makes this vulnerability particularly concerning for enterprise environments where multiple users access shared resources. Local users who can submit malicious parameters through network operations or file sharing protocols can potentially exploit this weakness to gain elevated system privileges.
Mitigation strategies for CVE-2003-0004 require immediate implementation of security patches from Microsoft, specifically targeting the Windows XP operating system updates. System administrators should disable unnecessary network file sharing functionality and implement strict network access controls to limit potential attack vectors. The vulnerability aligns with CWE-121, which categorizes buffer overflow conditions as critical security weaknesses, and maps to ATT&CK technique T1068, which covers privilege escalation through local exploits. Additional protective measures include implementing application whitelisting policies, monitoring network traffic for suspicious parameter patterns, and conducting regular vulnerability assessments to identify similar buffer overflow conditions. Organizations should also consider implementing network segmentation and privilege separation to minimize the potential impact of successful exploitation attempts.