CVE-2006-4702 in Windows Media Player
Summary
by MITRE
Buffer overflow in the Windows Media Format Runtime in Microsoft Windows Media Player (WMP) 6.4 and Windows XP SP2, Server 2003, and Server 2003 SP1 allows remote attackers to execute arbitrary code via a crafted Advanced Systems Format (ASF) file.
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Analysis
by VulDB Data Team • 07/11/2019
The vulnerability identified as CVE-2006-4702 represents a critical buffer overflow flaw within the Windows Media Format Runtime component of Microsoft Windows Media Player version 6.4 and various Windows operating systems including Windows XP Service Pack 2 and Windows Server 2003 with their respective service packs. This issue stems from insufficient input validation mechanisms when processing Advanced Systems Format files, which are commonly used multimedia containers that can contain audio, video, and other data streams. The flaw manifests when the affected software attempts to handle maliciously crafted ASF files that contain oversized data structures exceeding the allocated buffer space, creating conditions ripe for exploitation by remote attackers.
The technical implementation of this vulnerability falls under CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. When a victim system processes a specially crafted ASF file, the Windows Media Format Runtime fails to properly validate the size of data structures within the file, particularly those related to metadata and stream information. This lack of proper boundary checking enables an attacker to overflow a buffer located on the stack or heap, potentially allowing arbitrary code execution with the privileges of the compromised user. The vulnerability is particularly dangerous because it can be triggered remotely through web-based attacks, email attachments, or any method that delivers the malicious ASF file to an affected system.
The operational impact of CVE-2006-4702 extends beyond simple remote code execution to encompass a comprehensive compromise of affected systems. Attackers can leverage this vulnerability to gain unauthorized access to systems, install backdoors, steal sensitive information, or establish persistent access for further exploitation. The vulnerability affects a wide range of Microsoft Windows operating systems, making it particularly attractive to threat actors seeking maximum impact. The attack vector is particularly concerning as it requires minimal user interaction beyond opening the malicious file, which could occur through automated downloads or social engineering tactics. This vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1068 for exploit for privilege escalation, as successful exploitation can lead to elevated system privileges and further network compromise.
Mitigation strategies for CVE-2006-4702 must address both immediate remediation and long-term security posture improvements. Microsoft released security patches through Windows Update and Windows Server Update Services to address this vulnerability, requiring system administrators to apply these updates promptly across all affected systems. Organizations should implement network segmentation and firewall rules to prevent unauthorized access to systems running vulnerable versions of Windows Media Player. Additionally, security awareness training should emphasize the dangers of opening unknown or untrusted multimedia files, as user behavior remains a critical factor in successful exploitation. The vulnerability highlights the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies including application whitelisting and sandboxing techniques to limit the potential impact of similar future vulnerabilities. System administrators should also consider disabling Windows Media Player or implementing strict file type validation for multimedia content to reduce attack surface.