CVE-2004-1244 in Windows Media Player
Summary
by MITRE
Windows Media Player 9 allows remote attackers to execute arbitrary code via a PNG file containing large (1) width or (2) height values, aka the "PNG Processing Vulnerability."
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 01/03/2025
The vulnerability identified as CVE-2004-1244 represents a critical buffer overflow flaw in Windows Media Player 9 that arises during the processing of Portable Network Graphics files. This vulnerability specifically targets the image parsing functionality within the media player's handling of PNG metadata, creating an exploitable condition that can be leveraged by remote attackers to execute arbitrary code on affected systems. The flaw manifests when the player encounters PNG files containing malformed width or height values that exceed normal processing limits, triggering memory corruption that can be manipulated for malicious purposes.
The technical nature of this vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking occurs during memory allocation and data processing. When Windows Media Player 9 processes a specially crafted PNG file with excessive width or height parameters, the application fails to properly validate these values before allocating memory buffers. This validation failure allows attackers to craft malicious PNG files that, when opened by the vulnerable media player, cause stack or heap corruption. The vulnerability operates through the media player's image decoding pipeline where PNG metadata is parsed and converted into internal data structures, creating a direct path for code execution through memory corruption techniques.
The operational impact of this vulnerability extends beyond simple remote code execution, as it provides attackers with a vector to compromise Windows systems without requiring user interaction beyond opening a malicious file. The vulnerability affects systems running Windows Media Player 9, which was widely distributed across enterprise and consumer environments during the early 2000s, making it particularly dangerous for organizations with legacy systems. Attackers can leverage this vulnerability through various delivery mechanisms including email attachments, web downloads, or malicious websites, as the media player's automatic preview feature can trigger the vulnerability when users view infected PNG files. The exploitation process typically involves crafting a PNG file with carefully calculated width and height values that cause integer overflow conditions during buffer allocation, resulting in memory corruption that can be controlled to redirect program execution flow.
From a cybersecurity perspective, this vulnerability demonstrates the importance of proper input validation and bounds checking in multimedia processing libraries. The ATT&CK framework categorizes this as a technique involving code injection through file format manipulation, specifically falling under the category of "Exploitation for Client Execution." Organizations affected by this vulnerability should implement immediate mitigations including disabling automatic preview of file attachments, updating to patched versions of Windows Media Player, and deploying network-based intrusion detection systems to monitor for exploitation attempts. The vulnerability also highlights the risks associated with legacy software components and underscores the necessity of regular security updates and patch management programs to protect against known vulnerabilities that may be exploited by threat actors.