[ MDVSA-2010:064 ] libpng

[dude67]

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Package : libpng
Date : March 23, 2010
Affected: 2009.0, 2009.1, 2010.0, Enterprise Server 5.0
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Problem Description:

A vulnerability has been found and corrected in libpng:

The png_decompress_chunk function in pngrutil.c in libpng 1.0.x before
1.0.53, 1.2.x before 1.2.43, and 1.4.x before 1.4.1 does not properly
handle compressed ancillary-chunk data that has a disproportionately
large uncompressed representation, which allows remote attackers to
cause a denial of service (memory and CPU consumption, and application
hang) via a crafted PNG file, as demonstrated by use of the deflate
compression method on data composed of many occurrences of the same
character, related to a decompression bomb attack (CVE-2010-0205).

The updated packages have been patched to correct this issue.
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References:

http://cve.mitre.org/cgi-bin/cvename.cg ... -2010-0205
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