CVE-2016-7449

NameCVE-2016-7449
DescriptionThe TIFFGetField function in coders/tiff.c in GraphicsMagick 1.3.24 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a file containing an "unterminated" string.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-651-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
graphicsmagick (PTS)wheezy1.3.16-1.1vulnerable
wheezy (security)1.3.16-1.1+deb7u9fixed
jessie1.3.20-3+deb8u1vulnerable
jessie (security)1.3.20-3+deb8u2vulnerable
stretch1.3.25-8fixed
buster1.3.26-11fixed
sid1.3.26-12fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
graphicsmagicksource(unstable)1.3.25-1medium
graphicsmagicksourcewheezy1.3.16-1.1+deb7u4mediumDLA-651-1

Notes

The scope of the CVE is for all of these reported TIFF problems.
The ultimate vulnerability was use of:
strlcpy(attribute,text,Min(sizeof(attribute),(count+1)));
three times in coders/tiff.c, where strlcpy is not an appropriate
function choice for this type of scenario of untrusted-data copying.
http://hg.code.sf.net/p/graphicsmagick/code/rev/eb58028dacf5
https://blogs.gentoo.org/ago/2016/08/23/graphicsmagick-two-heap-based-buffer-overflow-in-readtiffimage-tiff-c/
https://blogs.gentoo.org/ago/2016/09/07/graphicsmagick-null-pointer-dereference-in-magickstrlcpy-utility-c/
Fixed by http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/eb58028dacf5

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