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Advisories

FFmpeg through 9.0.2 Uninitialized Heap Memory Disclosure via MSCC/SRGC Decoder

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Severity
medium
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-908 Use of Uninitialized Resource
CVSS
4.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Umar Pathan (Umar0x), Joshua Rogers (AISLE Research), Umar Pathan
Description
FFmpeg through 9.0.2 contains an information disclosure vulnerability in the MSCC/SRGC decoder in libavcodec/mscc.c that outputs uninitialized heap bytes when RLE data ends early. Attackers can craft an MSCC or SRGC stream, such as in AVI, whose RLE data terminates early so the decoded frame exposes leftover heap memory to viewers of the output.

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