Description
In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.
References (2)
Core 2
Core References
Patch x_refsource_misc
https://github.com/FFmpeg/FFmpeg/commit/d08d4a8c7387e758d439b0592782e4cfa2b4d6a4
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html
Scores
CVSS v3
8.1
EPSS
0.0040
EPSS Percentile
60.9%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (1)
ffmpeg/ffmpeg
4.0.1
Published
Jul 05, 2018
Tracked Since
Feb 18, 2026