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CVE-2020-27754

Published: 8 December 2020

In IntensityCompare() of /magick/quantize.c, there are calls to PixelPacketIntensity() which could return overflowed values to the caller when ImageMagick processes a crafted input file. To mitigate this, the patch introduces and uses the ConstrainPixelIntensity() function, which forces the pixel intensities to be within the proper bounds in the event of an overflow. This flaw affects ImageMagick versions prior to 6.9.10-69 and 7.0.8-69.

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)
focal
Released (8:6.9.10.23+dfsg-2.1ubuntu11.4)
groovy
Released (8:6.9.10.23+dfsg-2.1ubuntu13.3)
upstream
Released (8:6.9.11.24+dfsg-1)
bionic
Released (8:6.9.7.4+dfsg-16ubuntu6.11)
trusty Needed

xenial Needed

kinetic Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
impish Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
jammy Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
lunar Not vulnerable
(8:6.9.11.60+dfsg-1ubuntu1)
Patches:
upstream: https://github.com/ImageMagick/ImageMagick6/commit/d5df600d43c8706df513a3273d09aee6f54a9233

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