This script is Copyright (C) 2013-2015 Tenable Network Security, Inc.
The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2012:0523 :
Updated libpng packages that fix one security issue are now available
for Red Hat Enterprise Linux 5 and 6.
The Red Hat Security Response Team has rated this update as having
moderate security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from
the CVE link in the References section.
The libpng packages contain a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files.
A heap-based buffer overflow flaw was found in the way libpng
processed tEXt chunks in PNG image files. An attacker could create a
specially crafted PNG image file that, when opened, could cause an
application using libpng to crash or, possibly, execute arbitrary code
with the privileges of the user running the application.
Users of libpng should upgrade to these updated packages, which
correct this issue. For Red Hat Enterprise Linux 5, they contain a
backported patch. For Red Hat Enterprise Linux 6, they upgrade libpng
to version 1.2.49. All running applications using libpng must be
restarted for the update to take effect.
See also :
Update the affected libpng packages.
Risk factor :
Medium / CVSS Base Score : 6.8
CVSS Temporal Score : 5.0
Public Exploit Available : false