CVE-2009-1045 in VLC Media Player
Summary
by MITRE
requests/status.xml in VLC 0.9.8a allows remote attackers to cause a denial of service (stack consumption and crash) via a long input argument in an in_play action.
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Analysis
by VulDB Data Team • 11/24/2024
The vulnerability identified as CVE-2009-1045 resides within the VLC media player version 0.9.8a and specifically affects the requests/status.xml component. This flaw manifests as a stack-based buffer overflow condition that occurs when processing maliciously crafted input arguments within the in_play action parameter. The vulnerability represents a classic denial of service vector that exploits improper input validation mechanisms within the media player's web interface subsystem.
The technical implementation of this vulnerability involves the exploitation of insufficient bounds checking during the processing of XML requests sent to VLC's embedded web server. When a remote attacker crafts a malicious HTTP request containing an excessively long input argument within the in_play action, the application fails to properly validate the length of the input before processing it. This lack of input sanitization allows the attacker to consume excessive stack memory resources, ultimately leading to a stack overflow condition that terminates the application process. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, where insufficient boundary checking permits the writing of data beyond the allocated stack buffer space.
The operational impact of this vulnerability extends beyond simple service disruption to encompass potential system stability issues within environments where VLC is deployed as a media server or streaming component. Remote attackers can leverage this weakness to repeatedly crash the VLC application, effectively denying legitimate users access to media playback functionality. The vulnerability is particularly concerning in scenarios where VLC operates as a background service or is integrated into larger media processing systems, as it could be exploited to disrupt automated media handling workflows. This type of denial of service attack aligns with ATT&CK technique T1499.004 for network denial of service and represents a fundamental weakness in input validation controls.
Mitigation strategies for this vulnerability involve immediate application of the vendor-provided patch that addresses the buffer overflow condition through proper input length validation and bounds checking. System administrators should ensure that all instances of VLC media player are updated to versions that contain the necessary security fixes. Additionally, network-level defenses such as intrusion prevention systems can be configured to monitor for suspicious XML request patterns that may indicate exploitation attempts. The vulnerability highlights the importance of implementing robust input validation controls and adhering to secure coding practices that prevent buffer overflow conditions. Organizations should also consider implementing network segmentation and access controls to limit exposure of VLC instances to untrusted networks, thereby reducing the attack surface for such remote exploitation scenarios.