Out-of-bounds Read Affecting ffmpeg package, versions <4.1-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.25% (66th percentile)

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  • Snyk IDSNYK-ALPINE312-FFMPEG-589568
  • published13 Nov 2019
  • disclosed5 Jul 2018

Introduced: 5 Jul 2018

CVE-2018-13305  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Alpine:3.12 ffmpeg to version 4.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg package and not the ffmpeg package as distributed by Alpine. See How to fix? for Alpine:3.12 relevant fixed versions and status.

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.