CVE-2020-27754

LOW

ImageMagick < 6.9.10-69 - Integer Overflow in IntensityCompare

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
Exploit, Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1894231

Scores

CVSS v3 3.3
EPSS 0.0009
EPSS Percentile 25.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Details

CWE
CWE-190
Status published
Products (2)
debian/debian_linux 9.0
imagemagick/imagemagick < 6.9.10-69
Published Dec 08, 2020
Tracked Since Feb 18, 2026