netpbm security update

CentOS Errata and Security Advisory CESA-2008:0131

The netpbm package contains a library of functions for editing and
converting between various graphics file formats, including .pbm (portable
bitmaps), .pgm (portable graymaps), .pnm (portable anymaps), .ppm (portable
pixmaps) and others. The package includes no interactive tools and is
primarily used by other programs (eg CGI scripts that manage web-site
images).

An input validation flaw was discovered in the GIF-to-PNM converter
(giftopnm) shipped with the netpbm package. An attacker could create a
carefully crafted GIF file which could cause giftopnm to crash or possibly
execute arbitrary code as the user running giftopnm. (CVE-2008-0554)

All users are advised to upgrade to these updated packages which contain a
backported patch which resolves this issue.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2008-February/076880.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076881.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076884.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076885.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076889.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076890.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076896.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076897.html

Affected packages:
netpbm
netpbm-devel
netpbm-progs

Upstream details at:
https://access.redhat.com/errata/RHSA-2008:0131