Out-of-Bounds Affecting libxfont package, versions <1:1.4.4-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
8.36% (95th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBXFONT-313151
  • published19 Aug 2011
  • disclosed19 Aug 2011

Introduced: 19 Aug 2011

CVE-2011-2895  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libxfont to version 1:1.4.4-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxfont package and not the libxfont package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

The 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.

References

CVSS Base Scores

version 3.1