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Advisories

FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer

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severity
high
date
Affecting

  • FFmpeg < 1cdeb3c4e7f1f8566d846b9b451e01c376398818

CWE
  • CWE-122 Heap-based Buffer Overflow
CVSS
8.5
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Joshua Rogers (AISLE Research)
Description
FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.

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