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Advisories

FFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC Muxing

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severity
high
date
Affecting

  • FFmpeg < acf5d7cdc1f9ae8752c23e1ea8d7f355ed780781

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 acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers the overflow during muxing.

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