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CVE-2020-25664

Published: 8 December 2020

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.

Notes

AuthorNote
mdeslaur
fix attempt was reverted
unclear what the fix for this issue is as of 2021-06-10
Priority

Medium

CVSS 3 base score: 6.1

Status

Package Release Status
imagemagick
Launchpad, Ubuntu, Debian
bionic Deferred

focal Deferred

groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Deferred

kinetic Deferred

precise Does not exist

trusty Needs triage

upstream
Released (8:6.9.11.24+dfsg-1)
xenial
Released (8:6.8.9.9-7ubuntu5.16+esm2)
Patches:
upstream: https://github.com/ImageMagick/ImageMagick6/commit/27d3ddedb73f63fa984ff5b4d66e07eef654070f
upstream: https://github.com/ImageMagick/ImageMagick6/commit/e16a98540228f707a718dd09ac0b8cacd2a25d49 (revert)