This script is Copyright (C) 2006-2016 Tenable Network Security, Inc.
The remote Red Hat host is missing one or more security updates.
Updated libpng packages that fix a security issue are now available
for Red Hat Enterprise Linux 4.
This update has been rated as having moderate security impact by the
Red Hat Security Response Team.
The libpng package contains a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files.
A heap based buffer overflow bug was found in the way libpng strips
alpha channels from a PNG image. An attacker could create a carefully
crafted PNG image file in such a way that it could cause an
application linked with libpng to crash or execute arbitrary code when
the file is opened by a victim. The Common Vulnerabilities and
Exposures project has assigned the name CVE-2006-0481 to this issue.
Please note that the vunerable libpng function is only used by TeTeX
and XEmacs on Red Hat Enterprise Linux 4.
All users of libpng are advised to update to these updated packages
which contain a backported patch that is not vulnerable to this issue.
See also :
Update the affected libpng and / or libpng-devel packages.
Risk factor :
Medium / CVSS Base Score : 5.0