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Family: Red Hat Local Security Checks --> Category: infos

RHSA-2002-152: libpng Vulnerability Scan

Vulnerability Scan Summary
Check for the version of the libpng packages

Detailed Explanation for this Vulnerability Test

Updated libpng packages are available that fix a buffer overflow

The libpng package contains a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files. PNG
is a bit-mapped graphics format similar to the GIF format.

Versions of libpng prior to 1.0.14 contain a buffer overflow in the
progressive reader when the PNG datastream contains more IDAT data than
indicated by the IHDR chunk. Such deliberately malformed datastreams would
crash applications linked to libpng such as Mozilla that use the
progressive reading feature.

Packages within Red Hat Linux Advanced Server , such as Mozilla, make use
of the shared libpng library, therefore all users are advised to upgrade to
the errata packages which contain libpng 1.0.14. Libpng 1.0.14 is not
vulnerable to this issue and contains fixes for other bugs including a
number of memory leaks.

Solution :
Threat Level: High

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