CVE-2020-27754

NameCVE-2020-27754
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2602-1, DLA-3357-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
imagemagick (PTS)buster8:6.9.10.23+dfsg-2.1+deb10u1vulnerable
buster (security)8:6.9.10.23+dfsg-2.1+deb10u6fixed
bullseye8:6.9.11.60+dfsg-1.3+deb11u2fixed
bullseye (security)8:6.9.11.60+dfsg-1.3+deb11u3fixed
bookworm8:6.9.11.60+dfsg-1.6fixed
bookworm (security)8:6.9.11.60+dfsg-1.6+deb12u1fixed
trixie, sid8:6.9.12.98+dfsg1-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
imagemagicksourcestretch8:6.9.7.4+dfsg-11+deb9u12DLA-2602-1
imagemagicksourcebuster8:6.9.10.23+dfsg-2.1+deb10u2DLA-3357-1
imagemagicksource(unstable)8:6.9.11.24+dfsg-1

Notes

https://github.com/ImageMagick/ImageMagick/issues/1754
ImageMagick: https://github.com/ImageMagick/ImageMagick6/commit/d5df600d43c8706df513a3273d09aee6f54a9233
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/d5df600d43c8706df513a3273d09aee6f54a9233

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