CVE-2020-27754 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1894231 https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

3.3