CyberRota Analysis
AI-GeneratedA heap buffer overflow vulnerability exists in the RIST protocol reader of FFmpeg, allowing a remote attacker to exploit the async:rist:// URL scheme to send oversized packets that exceed the allocated buffer size. This can lead to potential arbitrary code execution or crashes, posing a significant risk to systems utilizing affected versions of FFmpeg. Organizations using FFmpeg for media processing, especially those implementing RIST protocol, should prioritize patching this critical vulnerability immediately.
Original NVD Description
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.