tk security update

CentOS Errata and Security Advisory CESA-2008:0135

Tk is a graphical toolkit for the Tcl scripting language.

An input validation flaw was discovered in Tk’s GIF image handling. A
code-size value read from a GIF image was not properly validated before
being used, leading to a buffer overflow. A specially crafted GIF file
could use this to cause a crash or, potentially, execute code with the
privileges of the application using the Tk graphical toolkit.
(CVE-2008-0553)

A buffer overflow flaw was discovered in Tk’s animated GIF image handling.
An animated GIF containing an initial image smaller than subsequent images
could cause a crash or, potentially, execute code with the privileges of
the application using the Tk library. (CVE-2007-5378)

All users are advised to upgrade to these updated packages which contain a
backported patches to resolve these issues.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2008-February/076855.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076858.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076860.html
https://lists.centos.org/pipermail/centos-announce/2008-February/076861.html

Affected packages:
tk
tk-devel

Upstream details at:
https://access.redhat.com/errata/RHSA-2008:0135