CVE-2020-25676

Name	CVE-2020-25676
Description	In CatromWeights(), MeshInterpolate(), InterpolatePixelChannel(), InterpolatePixelChannels(), and InterpolatePixelInfo(), which are all functions in /MagickCore/pixel.c, there were multiple unconstrained pixel offset calculations which were being used with the floor() function. These calculations produced undefined behavior in the form of out-of-range and integer overflows, as identified by UndefinedBehaviorSanitizer. These instances of undefined behavior could be triggered by an attacker who is able to supply a crafted input file to be processed by ImageMagick. These issues could impact application availability or potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-2602-1
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
imagemagick (PTS)	stretch	8:6.9.7.4+dfsg-11+deb9u8	vulnerable
	stretch (security)	8:6.9.7.4+dfsg-11+deb9u12	fixed
	buster, buster (security)	8:6.9.10.23+dfsg-2.1+deb10u1	vulnerable
	bullseye, sid	8:6.9.11.60+dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
imagemagick	source	stretch	8:6.9.7.4+dfsg-11+deb9u12		DLA-2602-1
imagemagick	source	(unstable)	8:6.9.11.24+dfsg-1

Notes

https://github.com/ImageMagick/ImageMagick/issues/1732
ImageMagick: https://github.com/ImageMagick/ImageMagick/commit/406da3af9e09649cda152663c179902edf5ab3ac
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/94aeb3c40d25aee1051ba8eb3a31601558ef2506