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Advisories

FFmpeg through 9.0.2 Out-of-Bounds Read via prores_ks Interlaced Alpha Encoding

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Severity
low
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-127 Buffer Under-read
CVSS
2.0
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Zheng Yu @ Depthfirst, Joshua Rogers (AISLE Research), Michael Niedermayer
Description
FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in the prores_ks encoder's get_alpha_data() that reads before the blocks buffer for interlaced frames with odd heights. Attackers can supply video with alpha and odd height encoded to interlaced ProRes 4444, causing out-of-bounds memory to be encoded into the output alpha plane.

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