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Advisories

FFmpeg through 9.0.2 Stack Exhaustion via Recursive Free of pssh Boxes

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severity
medium
date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-674 Uncontrolled Recursion
CVSS
5.7
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Joshua Rogers (AISLE Research)
Description
FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncryptionInitInfo linked lists built by the MOV demuxer's mov_read_pssh(). Attackers can supply a crafted MP4 file with tens of thousands of small pssh boxes to exhaust the stack and crash the process, while also causing quadratic CPU consumption.

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