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Advisories

FFmpeg through 9.0.2 Heap Overflow via Nellymoser Encoder Trellis Search

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Severity
high
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-193 Off-by-one Error
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
Zheng Yu, Joshua Rogers (AISLE Research), Michael Niedermayer
Description
FFmpeg through 9.0.2 contains an off-by-one heap overflow vulnerability in get_exponent_dynamic() in libavcodec/nellymoserenc.c that allows writing one element past the opt and path allocations. Attackers can supply crafted audio to applications encoding Nellymoser with trellis enabled, causing idx to equal OPT_SIZE and overwrite adjacent heap memory.

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