CVE-2009-1331 in Windows Media Player
Summary
by MITRE
Integer overflow in Microsoft Windows Media Player (WMP) 11.0.5721.5260 allows remote attackers to cause a denial of service (application crash) via a crafted .mid file, as demonstrated by crash.mid.
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Analysis
by VulDB Data Team • 11/27/2024
The vulnerability identified as CVE-2009-1331 represents a critical integer overflow flaw within Microsoft Windows Media Player version 11.0.5721.5260 that fundamentally compromises system stability through malicious media file manipulation. This issue specifically affects the handling of MIDI files and demonstrates how seemingly benign media formats can be weaponized to disrupt system operations. The vulnerability resides in the application's inability to properly validate integer values during the processing of crafted .mid files, creating a condition where arithmetic operations exceed maximum allowable values and result in unpredictable behavior.
The technical exploitation of this vulnerability occurs when Windows Media Player attempts to parse a specially crafted MIDI file that contains malformed integer values within its data structures. When the player processes these invalid values, the integer overflow causes memory corruption that ultimately leads to application termination. This type of flaw falls under the CWE-190 category of Integer Overflow or Wraparound, which is classified as a fundamental weakness in software design that allows attackers to manipulate integer arithmetic operations beyond their intended bounds. The vulnerability demonstrates how improper input validation in multimedia processing libraries can create exploitable conditions that bypass normal security controls.
From an operational perspective, this vulnerability presents significant risk to end-user systems as it enables remote attackers to execute denial of service attacks without requiring elevated privileges or specialized access. The attack vector is particularly concerning because it leverages common media file formats that users frequently encounter through email attachments, web downloads, or peer-to-peer networks. The demonstrated exploit using crash.mid file illustrates how attackers can create simple yet effective malicious payloads that trigger the overflow condition. This vulnerability aligns with ATT&CK technique T1499.004 which describes the use of application or system exploitation to cause denial of service, representing a common attack pattern that targets application stability rather than data exfiltration.
The impact of this vulnerability extends beyond simple application crashes to potentially disrupt user productivity and create opportunities for more sophisticated attacks. When Windows Media Player crashes, users may lose unsaved work or be unable to access multimedia content until the application is restarted, creating operational disruption in business environments. Organizations running older versions of Windows Media Player may face increased risk of service interruption across their networks, particularly in environments where users frequently interact with external media sources. The vulnerability also highlights the importance of proper software patch management, as Microsoft would have addressed this issue through security updates that correct the integer overflow handling in the media processing code.
Mitigation strategies for CVE-2009-1331 should include immediate deployment of Microsoft security patches that address the integer overflow in Windows Media Player's MIDI processing functionality. System administrators should implement network-based controls to restrict access to potentially malicious media files through content filtering solutions that can identify and block suspicious .mid file attachments. Additionally, users should be educated about the risks of opening media files from untrusted sources and encouraged to keep their media player software updated. The vulnerability serves as a reminder of the importance of input validation in multimedia processing libraries and demonstrates how seemingly simple integer arithmetic can create complex security issues. Organizations should also consider implementing application whitelisting policies that restrict execution of untrusted media players or disable unnecessary media playback capabilities in user environments to reduce attack surface exposure.