CVE-2001-0719 in Windows Media Player
Summary
by MITRE
Buffer overflow in Microsoft Windows Media Player 6.4 allows remote attackers to execute arbitrary code via a malformed Advanced Streaming Format (ASF) file.
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Analysis
by VulDB Data Team • 07/10/2014
The vulnerability identified as CVE-2001-0719 represents a critical buffer overflow flaw in Microsoft Windows Media Player version 6.4 that fundamentally compromises system security through improper input validation. This vulnerability resides within the handling of Advanced Streaming Format files, which are multimedia container formats developed by Microsoft for streaming media content. The flaw occurs when the media player processes malformed ASF files, specifically during the parsing of header information and metadata structures that exceed allocated buffer boundaries. The buffer overflow vulnerability arises from insufficient bounds checking mechanisms within the player's ASF parser, allowing attackers to craft malicious files that trigger memory corruption when processed by the vulnerable software.
The technical implementation of this vulnerability follows the classic buffer overflow pattern where a fixed-size buffer receives more data than it can accommodate, leading to overwriting adjacent memory locations. In the context of Windows Media Player 6.4, the attacker crafts an ASF file containing oversized or malformed header fields that cause the application's internal buffers to overflow when parsing the file structure. This overflow can overwrite critical memory segments including return addresses, function pointers, or other control data structures, enabling arbitrary code execution with the privileges of the user running the vulnerable media player application. The vulnerability is particularly dangerous because it operates in a remote attack scenario, meaning attackers can deliver malicious ASF files through various vectors including email attachments, web downloads, or network shares without requiring local access to the target system.
The operational impact of CVE-2001-0719 extends beyond simple code execution to encompass complete system compromise and potential lateral movement within network environments. When successfully exploited, the vulnerability allows attackers to execute malicious code on vulnerable systems, potentially leading to full system takeover, data exfiltration, or establishment of persistent backdoors. The widespread adoption of Windows Media Player 6.4 across corporate and personal computing environments amplified the threat surface, as many systems were running the vulnerable software without proper patching or security updates. This vulnerability directly relates to CWE-121, which describes heap-based buffer overflow conditions, and aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as the exploitation enables attackers to execute arbitrary commands on compromised systems. The remote exploit nature of this vulnerability means that no user interaction is required beyond opening the malicious file, making it particularly dangerous in unpatched environments.
Mitigation strategies for CVE-2001-0719 primarily focus on immediate software patching and system hardening measures. Microsoft released security updates to address this vulnerability, and organizations should prioritize applying these patches to all affected systems running Windows Media Player 6.4. Network administrators should implement content filtering measures to block ASF files from untrusted sources and consider disabling automatic playback of multimedia content in web browsers and email clients. Additionally, system administrators should conduct comprehensive vulnerability assessments to identify all systems running vulnerable versions of Windows Media Player and ensure proper network segmentation to limit potential lateral movement if exploitation occurs. The vulnerability also highlights the importance of input validation and bounds checking in multimedia processing applications, reinforcing industry best practices for secure coding and defensive programming techniques that prevent similar buffer overflow conditions in future software development cycles.