Divide By Zero Affecting imagemagick package, versions <8:6.9.10.23+dfsg-2.1ubuntu11.4


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-UBUNTU2004-IMAGEMAGICK-1133937
  • published11 Jun 2021
  • disclosed3 Dec 2020

Introduced: 3 Dec 2020

CVE-2020-27760  (opens in a new tab)
CWE-369  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 imagemagick to version 8:6.9.10.23+dfsg-2.1ubuntu11.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream imagemagick package and not the imagemagick package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

In GammaImage() of /MagickCore/enhance.c, depending on the gamma value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the PerceptibleReciprocal() to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.

CVSS Scores

version 3.1