Scientific Linux SL5: CVE-2011-2690 Moderate: libpng Buffer Overflow

Date: Tue, 2 Aug 2011 11:11:54 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: libpng on SL5.x i386/x86_64
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Synopsis: Moderate: libpng security update
Issue Date: 2011-07-28
CVE Numbers: CVE-2011-2690
 CVE-2011-2692

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 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 contain
backported patches to correct these issues. All running applications
using libpng must be restarted for the update to take effect.

SL5:
 i386
 libpng-1.2.10-7.1.el5_7.5.i386.rpm
 libpng-devel-1.2.10-7.1.el5_7.5.i386.rpm
 x86_64
 libpng-1.2.10-7.1.el5_7.5.i386.rpm
 libpng-1.2.10-7.1.el5_7.5.x86_64.rpm
 libpng-devel-1.2.10-7.1.el5_7.5.i386.rpm
 libpng-devel-1.2.10-7.1.el5_7.5.x86_64.rpm

- Scientific Linux Development Team