Heap Memory Disclosure in FFmpeg CineForm HD Decoder

Executive Summary

This vulnerability is an uninitialized memory disclosure issue in FFmpeg through version 9.0.2. It occurs in the CineForm HD decoder where unzeroed idwt_tmp buffers in libavcodec/cfhd.c leak heap memory. Attackers can exploit this by providing a crafted CFHD file with an ImageHeight tag that exceeds coded band heights, causing uninitialized heap bytes to appear in decoded video output.

Useful 0 Not Useful 0

Detection Guidance

This vulnerability involves uninitialized memory disclosure in FFmpeg's CineForm HD decoder. Detection requires analyzing FFmpeg versions and processing suspicious media files. Check FFmpeg version with 'ffmpeg -version' and inspect for version 9.0.2 or earlier. Monitor for unexpected memory leaks during video decoding operations.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability may allow attackers to access sensitive information from memory, such as passwords or encryption keys, if they can trick a user into processing a malicious CFHD file. It primarily affects systems using FFmpeg to decode CineForm HD video files.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability involves uninitialized memory disclosure in FFmpeg's CineForm HD decoder, which could lead to exposure of sensitive data in decoded video output. For GDPR, this may violate principles of data protection and confidentiality (Article 5). For HIPAA, it could compromise protected health information if video data contains such details.

Useful 0 Not Useful 0

Mitigation Strategies

Immediately update FFmpeg to the latest version beyond 9.0.2. Avoid processing untrusted CFHD files until patched. Implement network monitoring for suspicious media file transfers. Restrict access to media processing tools to trusted users only.

Useful 0 Not Useful 0