Scientific Linux Security Update : libpng on SL6.x i386/x86_64

This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

The libpng packages contain a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files.

A buffer overflow flaw was found in the way libpng processed certain
PNG image files. An attacker could create a specially crafted PNG
image that, when opened, could cause an application using libpng to
crash or, potentially, execute arbitrary code with the privileges of
the user running the application. (CVE-2011-2690)

Note: The application behavior required to exploit CVE-2011-2690 is
rarely used. No application shipped with Scientific Linux behaves this
way, for example.

An out-of-bounds memory read flaw was found in the way libpng
processed certain PNG image files. An attacker could create a
specially crafted PNG image that, when opened, could cause an
application using libpng to crash. (CVE-2011-2501)

An uninitialized memory read issue was found in the way libpng
processed certain PNG images that use the Physical Scale (sCAL)
extension. An attacker could create a specially crafted PNG image
that, when opened, could cause an application using libpng to crash.
(CVE-2011-2692)

Users of libpng should upgrade to these updated packages, which
upgrade libpng to version 1.2.46 to correct these issues. All running
applications using libpng must be restarted for the update to take
effect.

See also :

http://www.nessus.org/u?0825dab6

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 61101 ()

Bugtraq ID:

CVE ID: CVE-2011-2501
CVE-2011-2690
CVE-2011-2692