CVE-2007-3035 in Media Player
Summary
by MITRE
Unspecified vulnerability in Microsoft Windows Media Player 7.1, 9, 10, and 11 allows remote attackers to execute arbitrary code via a skin file (WMZ or WMD) with crafted header information that is not properly handled during decompression, aka "Windows Media Player Code Execution Vulnerability Decompressing Skins."
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Analysis
by VulDB Data Team • 06/08/2025
This vulnerability resides in Microsoft Windows Media Player versions 7.1, 9, 10, and 11 where crafted skin files with malicious header information can trigger arbitrary code execution on affected systems. The flaw occurs during the decompression process of WMZ or WMD skin files, which are used to customize the player interface. When these files are processed, the application fails to properly validate or sanitize the header information, creating a potential code execution vector that remote attackers can leverage. The vulnerability is classified under CWE-129 Input Validation and CWE-787 Out-of-bounds Write, representing weaknesses in input validation and memory handling during file decompression operations.
The technical exploitation of this vulnerability involves crafting malicious skin files that contain specially formatted header data designed to trigger buffer overflows or memory corruption during decompression. When Windows Media Player attempts to decompress these malformed skin files, the improper handling of the crafted header information causes the application to execute unintended code within the context of the user running the player. This represents a classic code execution vulnerability that can be remotely triggered through web-based or network-delivered malicious files, aligning with ATT&CK technique T1203 Exploitation for Client Execution. The attack surface is particularly concerning as Windows Media Player was widely distributed and often executed with elevated privileges, potentially allowing for privilege escalation or system compromise.
The operational impact of this vulnerability extends beyond simple code execution, as it represents a significant security risk for enterprise environments where Windows Media Player remains installed on numerous systems. Attackers can leverage this vulnerability to deploy malware, establish persistence, or conduct further exploitation attempts once initial access is achieved. The remote nature of the attack means that users need only to view or interact with malicious skin files, which could be embedded in web pages, email attachments, or downloaded from compromised websites. This vulnerability demonstrates the importance of proper input validation and secure decompression handling, particularly for applications that process third-party content files. Organizations should consider implementing network segmentation, application whitelisting, and regular patch management to mitigate exposure to this type of vulnerability.
Microsoft addressed this issue through security updates that improved input validation and secure handling of skin file headers during decompression processes. The vulnerability highlights the broader challenge of maintaining secure file processing in media applications and underscores the need for robust validation mechanisms. This type of vulnerability represents a common pattern in multimedia processing applications where decompression routines are not adequately hardened against malformed input data, making it a relevant case study for understanding secure coding practices in media processing software. The vulnerability also demonstrates how seemingly benign user interface customization features can become attack vectors when proper security controls are not implemented during file processing operations.