CVE-2011-2895

NameCVE-2011-2895
DescriptionThe LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2293-1
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxfont (PTS)wheezy1:1.4.5-5fixed
wheezy (security)1:1.4.5-5+deb7u1fixed
jessie (security), jessie1:1.5.1-1+deb8u1fixed
stretch (security), stretch1:2.0.1-3+deb9u1fixed
buster, sid1:2.0.1-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxfontsource(unstable)1:1.4.4-1high
libxfontsourcelenny1:1.3.3-2highDSA-2293-1
libxfontsourcesqueeze1:1.4.1-3highDSA-2293-1

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