Description
In WriteOnePNGImage() of the PNG coder at coders/png.c, an improper call to AcquireVirtualMemory() and memset() allows for an out-of-bounds write later when PopShortPixel() from MagickCore/quantum-private.h is called. The patch fixes the calls by adding 256 to rowbytes. An attacker who is able to supply a specially crafted image could affect availability with a low impact to data integrity. This flaw affects ImageMagick versions prior to 6.9.10-68 and 7.0.8-68.
References (2)
Core 2
Core References
Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1891605
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z3J6D7POCQYQKNVRDYLTTPM5SQC3WVTR/
Scores
CVSS v3
6.1
EPSS
0.0007
EPSS Percentile
20.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Details
CWE
CWE-122
Status
published
Products (2)
fedoraproject/fedora
34
imagemagick/imagemagick
< 6.9.10-68
Published
Dec 08, 2020
Tracked Since
Feb 18, 2026