CVE-2008-3732 in VLC Media Player
Summary
by MITRE
Integer overflow in the Open function in modules/demux/tta.c in VLC Media Player 0.8.6i allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted TTA file, which triggers a heap-based buffer overflow. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 11/03/2024
The vulnerability identified as CVE-2008-3732 represents a critical integer overflow condition within the VLC Media Player software ecosystem, specifically within the TTA (True Audio) demultiplexer module. This flaw exists in the Open function located in modules/demux/tta.c file of VLC version 0.8.6i, creating a pathway for malicious actors to exploit the application's handling of specially crafted TTA audio files. The vulnerability stems from inadequate input validation and arithmetic overflow handling when processing file headers, particularly in the calculation of buffer sizes required for audio data processing. The integer overflow occurs during the parsing of TTA file metadata, where maliciously constructed values cause the application to allocate insufficient memory buffers, leading to heap-based buffer overflow conditions.
The technical exploitation of this vulnerability leverages the fundamental weakness in how VLC processes TTA file structures, where the application fails to properly validate integer values during the file parsing phase. When a malicious TTA file is presented to the vulnerable VLC version, the integer overflow results in the allocation of a buffer that is significantly smaller than the actual data that needs to be processed. This misalignment between allocated buffer size and required data size creates a condition where subsequent memory operations overwrite adjacent memory regions, potentially leading to application crashes or more severe consequences. The vulnerability operates under the Common Weakness Enumeration framework as CWE-190, which specifically addresses integer overflow conditions, and aligns with ATT&CK technique T1203 for exploitation of memory corruption vulnerabilities. The heap-based nature of the overflow means that attackers can manipulate memory layout to achieve arbitrary code execution, though the primary impact documented is denial of service through application crashes.
The operational impact of this vulnerability extends beyond simple service disruption, as it presents a potential vector for remote code execution in the context of VLC Media Player installations. Attackers can craft malicious TTA files that, when opened by vulnerable VLC versions, trigger the exploitable condition and potentially allow remote code execution on target systems. The attack surface includes any system running VLC 0.8.6i or earlier versions that processes TTA files, making this vulnerability particularly dangerous in environments where users might encounter untrusted media files. The vulnerability's remote exploitation capability means that attackers do not need local access to compromise systems, as simply opening a malicious file within the VLC application environment is sufficient to trigger the exploit. This characteristic places the vulnerability in the ATT&CK matrix under techniques involving remote code execution and privilege escalation, as successful exploitation could allow attackers to execute arbitrary code with the privileges of the VLC application user.
Mitigation strategies for CVE-2008-3732 focus on immediate software updates and security configuration measures to prevent exploitation. The primary and most effective mitigation is upgrading to VLC Media Player version 0.8.7 or later, where the integer overflow vulnerability has been patched through improved input validation and buffer size calculations. Organizations should implement comprehensive patch management procedures to ensure all VLC installations are updated to secure versions, particularly in enterprise environments where media playback applications are widely used. Additional defensive measures include implementing file type restrictions and content filtering mechanisms that prevent automatic execution of potentially malicious media files, especially in high-risk environments such as email gateways, web applications, and file sharing systems. Network-based intrusion detection systems should be configured to monitor for TTA file processing activities that might indicate exploitation attempts, while application whitelisting policies can restrict VLC execution to trusted environments only. Security teams should also consider implementing sandboxing techniques for media processing applications to limit the potential impact of successful exploitation attempts. The vulnerability demonstrates the critical importance of input validation in multimedia processing applications and highlights the necessity of robust memory management practices in software development to prevent similar integer overflow conditions from occurring in other media handling components.