CVE-2020-19143

NameCVE-2020-19143
DescriptionBuffer Overflow in LibTiff v4.0.10 allows attackers to cause a denial of service via the "TIFFVGetField" funtion in the component 'libtiff/tif_dir.c'.
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)
ReferencesDSA-4997-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tiff (PTS)stretch4.0.8-2+deb9u5fixed
stretch (security)4.0.8-2+deb9u7fixed
buster4.1.0+git191117-2~deb10u2vulnerable
buster (security)4.1.0+git191117-2~deb10u3fixed
bullseye4.2.0-1fixed
bookworm, sid4.3.0-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tiffsourcestretch(not affected)
tiffsourcebuster4.1.0+git191117-2~deb10u3DSA-4997-1
tiffsource(unstable)4.1.0+git201212-1

Notes

[stretch] - tiff <not-affected> (Vulnerable code introduced later)
http://bugzilla.maptools.org/show_bug.cgi?id=2851
https://gitlab.com/libtiff/libtiff/-/issues/158
Introduced with: https://gitlab.com/libtiff/libtiff/-/commit/9eacd59fecc4ef593ac17689bc530ab451c8ec14 (v4.0.10)
Fixed by: https://gitlab.com/libtiff/libtiff/-/commit/54ce8c522078cd0f39861df71db848648ec28ade (v4.2.0)

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