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CVE-2020-27761

Published: 3 December 2020

WritePALMImage() in /coders/palm.c used size_t casts in several areas of a calculation which could lead to values outside the range of representable type `unsigned long` undefined behavior when a crafted input file was processed by ImageMagick. The patch casts to `ssize_t` instead to avoid this issue. Red Hat Product Security marked the Severity as Low because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to ImageMagick 7.0.9-0.

Priority

Low

Cvss 3 Severity Score

3.3

Score breakdown

Status

Package Release Status
imagemagick
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
impish Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
bionic
Released (8:6.9.7.4+dfsg-16ubuntu6.11)
trusty Needed

jammy Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
kinetic Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
xenial Needed

focal
Released (8:6.9.10.23+dfsg-2.1ubuntu11.4)
groovy
Released (8:6.9.10.23+dfsg-2.1ubuntu13.3)
lunar Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
upstream
Released (8:6.9.11.24+dfsg-1)
mantic Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
Patches:
upstream: https://github.com/ImageMagick/ImageMagick6/commit/14c90fb315eb3666a4cf6d784cbde74c69c934ec

Severity score breakdown

Parameter Value
Base score 3.3
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L