CVE-2019-7663

NameCVE-2019-7663
DescriptionAn Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.
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)
ReferencesDLA-1680-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tiff (PTS)jessie4.0.3-12.3+deb8u5vulnerable
jessie (security)4.0.3-12.3+deb8u8fixed
stretch (security), stretch4.0.8-2+deb9u4vulnerable
buster, sid4.0.10-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tiffsource(unstable)4.0.10-4medium
tiffsourcejessie4.0.3-12.3+deb8u8mediumDLA-1680-1
tiff3source(unstable)(unfixed)medium

Notes

[stretch] - tiff <postponed> (Minor issue)
http://bugzilla.maptools.org/show_bug.cgi?id=2833
Fixed by: https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39
Same patch as CVE-2018-17000 but different issue. As well different
issue than CVE-2018-12900.

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