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CVE-2020-27756

Published: 8 December 2020

In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero conditions which also lead to undefined behavior. This flaw can be triggered by a crafted input file processed by ImageMagick and could impact application availability. The patch uses multiplication in addition to the function `PerceptibleReciprocal()` in order to prevent such divide-by-zero conditions. This flaw affects ImageMagick versions prior to 7.0.9-0.

Priority

Low

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
imagemagick
Launchpad, Ubuntu, Debian
impish Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
xenial Not vulnerable
(code not present)
bionic Not vulnerable
(code not present)
focal
Released (8:6.9.10.23+dfsg-2.1ubuntu11.4)
groovy
Released (8:6.9.10.23+dfsg-2.1ubuntu13.3)
hirsute Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
jammy Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
kinetic Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
lunar Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
trusty Not vulnerable
(code not present)
upstream
Released (8:6.9.11.24+dfsg-1)
Patches:
upstream: https://github.com/ImageMagick/ImageMagick6/commit/d3d96f05950275b916207bf9df03640ef3e9fd6e

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H