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Advisories

FFmpeg 2.0 through 9.0.2 Information Disclosure via G2M Kempf Palette

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Severity
medium
Date
Affecting

  • FFmpeg >= 2.0, <= 9.0.2

CWE
  • CWE-457 Use of Uninitialized Variable
CVSS
6.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Adrian Junge (vurlo)
Description
FFmpeg 2.0 through 9.0.2 contains a use of uninitialized variable vulnerability in the Go2Meeting decoder that allows attackers to leak stack memory through out-of-range palette indices. Attackers can craft a G2M3/G2M4 stream with a short Kempf palette so kempf_restore_buf() copies uninitialized stack bytes, including pointers or stack guards, into decoded output.

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