CVE-2008-1769 in VLC
Summary
by MITRE
VLC before 0.8.6f allow remote attackers to cause a denial of service (crash) via a crafted Cinepak file that triggers an out-of-bounds array access and memory corruption.
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Analysis
by VulDB Data Team • 06/01/2025
The vulnerability identified as CVE-2008-1769 represents a critical denial of service flaw within the VLC media player software ecosystem. This vulnerability specifically affects VLC versions prior to 0.8.6f and stems from improper handling of Cinepak video files during the decoding process. The flaw manifests when a maliciously crafted Cinepak file is processed by the media player, leading to a crash that disrupts normal operation and potentially renders the application unusable. The vulnerability operates through a classic buffer overflow mechanism where the software attempts to access memory locations beyond the allocated array boundaries, resulting in memory corruption that terminates the application.
The technical exploitation of this vulnerability follows a well-documented pattern that aligns with CWE-125, which describes out-of-bounds read conditions in software systems. When VLC encounters the malformed Cinepak file, the decoder fails to properly validate the file structure and subsequently attempts to access array elements that do not exist within the allocated memory space. This memory access violation triggers a segmentation fault or similar system-level exception that causes the application to terminate abruptly. The vulnerability demonstrates characteristics consistent with the ATT&CK framework's technique T1499, which encompasses denial of service attacks that compromise system availability through application-level crashes and memory corruption.
The operational impact of this vulnerability extends beyond simple service disruption, as it creates potential attack vectors for malicious actors seeking to compromise user systems. An attacker could deliver a crafted Cinepak file through various means including email attachments, malicious websites, or peer-to-peer file sharing networks. Once executed by a victim's system, the vulnerability would cause VLC to crash, potentially interrupting legitimate media playback activities and creating opportunities for more sophisticated attacks. The vulnerability's remote nature means that exploitation does not require physical access to the target system, making it particularly dangerous in enterprise environments where media files are frequently shared and processed.
Mitigation strategies for CVE-2008-1769 primarily focus on software updates and input validation measures. The most effective immediate solution involves upgrading to VLC version 0.8.6f or later, where the developers implemented proper bounds checking and input validation for Cinepak file processing. Organizations should also consider implementing file type restrictions and content filtering mechanisms to prevent automatic execution of potentially malicious media files. Network administrators can deploy intrusion prevention systems that monitor for suspicious file patterns and implement sandboxing techniques for media file handling. Additionally, user education regarding the risks of opening unknown media files and the importance of keeping software updated remains crucial in preventing successful exploitation of this vulnerability. The remediation process should include comprehensive testing to ensure that the update does not introduce compatibility issues with legitimate media files while effectively addressing the memory corruption vulnerability.