CVE-2020-25664

NameCVE-2020-25664
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
imagemagick (PTS)stretch8:6.9.7.4+dfsg-11+deb9u8vulnerable
stretch (security)8:6.9.7.4+dfsg-11+deb9u12vulnerable
buster, buster (security)8:6.9.10.23+dfsg-2.1+deb10u1vulnerable
bullseye, sid8:6.9.11.60+dfsg-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
imagemagicksource(unstable)8:6.9.11.24+dfsg-1

Notes

[stretch] - imagemagick <ignored> (Minor issue)
https://github.com/ImageMagick/ImageMagick/issues/1716
ImageMagick: https://github.com/ImageMagick/ImageMagick/commit/1f450bb5ba53d275de6d1cd086c98a0b549ad393
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/27d3ddedb73f63fa984ff5b4d66e07eef654070f
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/e16a98540228f707a718dd09ac0b8cacd2a25d49 (revert)
possible incomplete/invalid fix, cf. CVE-2020-27752 that occurs after the fix

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