CyberRota Analysis
AI-GeneratedFFmpeg is vulnerable to an out-of-bounds read in the DASH demuxer, which occurs when a live DASH manifest is refreshed with a lower startNumber than the previous value, resulting in a negative index during fragment retrieval. This vulnerability can be exploited by a malicious or misconfigured DASH server, potentially leading to unauthorized access to sensitive data or application crashes. Organizations using FFmpeg for media processing or streaming should prioritize patching this vulnerability to mitigate the associated risks.
Original NVD Description
FFmpeg before commit 65b0dab contains an out-of-bounds read in the DASH demuxer (libavformat/dashdec.c). When a live DASH manifest is refreshed with a startNumber that is lower than the previous value, the current sequence number is driven negative. The fragment retrieval function checked only the upper bound before indexing the fragments array, allowing a negative index to be used and causing an out-of-bounds read. A malicious or misconfigured DASH server can trigger this by serving a live manifest with a decreasing startNumber across a manifest refresh.