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OS X update for Login Window (CVE-2011-2895)

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OS X update for Login Window (CVE-2011-2895)

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
08/19/2011
Created
07/25/2018
Added
08/28/2015
Modified
03/29/2016

Description

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.

Solution(s)

  • apple-osx-security-update-2012-002
  • apple-osx-upgrade-10_7_4

References

  • apple-osx-security-update-2012-002
  • apple-osx-upgrade-10_7_4

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