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Advisories

FFmpeg through 9.0.2 FLIC Decoder Out-of-Bounds Write via FLI_BRUN Byte Swap

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Severity
high
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-787 Out-of-bounds Write
CVSS
7.3
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Joey Tang, Joshua Rogers (AISLE Research), Michael Niedermayer
Description
FFmpeg through 9.0.2 contains an out-of-bounds write vulnerability in flic_decode_frame_15_16BPP() in libavcodec/flicvideo.c that allows attackers to corrupt heap memory on big-endian builds. Attackers can supply a crafted 15/16 bpp FLIC/FLX file with an FLI_BRUN chunk whose non-terminating byte-swap loop writes packet-derived data past the frame buffer, crashing the process.

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