Issued:

2012-04-25

Updated:

2012-04-25

RHSA-2012:0523 - Moderate: libpng security update

Synopsis

Moderate: libpng security update

Type/Severity

Security Advisory Moderate

Topic

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.

Description

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. (CVE-2011-3048)

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.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

Updated Packages

• libpng-devel-1.2.49-1.el6_2.i686.rpm
• libpng-1.2.49-1.el6_2.i686.rpm
• libpng-1.2.10-17.el5_8.src.rpm
• libpng-devel-1.2.49-1.el6_2.s390.rpm
• libpng-debuginfo-1.2.49-1.el6_2.s390x.rpm
• libpng-1.2.49-1.el6_2.src.rpm
• libpng-devel-1.2.49-1.el6_2.ppc.rpm
• libpng-1.2.10-17.el5_8.s390.rpm
• libpng-static-1.2.49-1.el6_2.ppc64.rpm
• libpng-devel-1.2.10-17.el5_8.x86_64.rpm
• libpng-1.2.10-17.el5_8.i386.rpm
• libpng-devel-1.2.10-17.el5_8.i386.rpm
• libpng-1.2.10-17.el5_8.ppc64.rpm
• libpng-debuginfo-1.2.49-1.el6_2.x86_64.rpm
• libpng-1.2.49-1.el6_2.s390x.rpm
• libpng-devel-1.2.49-1.el6_2.ppc64.rpm
• libpng-devel-1.2.10-17.el5_8.s390x.rpm
• libpng-static-1.2.49-1.el6_2.x86_64.rpm
• libpng-devel-1.2.10-17.el5_8.ia64.rpm
• libpng-1.2.10-17.el5_8.ppc.rpm
• libpng-1.2.49-1.el6_2.x86_64.rpm
• libpng-debuginfo-1.2.49-1.el6_2.ppc64.rpm
• libpng-static-1.2.49-1.el6_2.s390x.rpm
• libpng-1.2.10-17.el5_8.s390x.rpm
• libpng-devel-1.2.10-17.el5_8.s390.rpm
• libpng-1.2.10-17.el5_8.x86_64.rpm
• libpng-1.2.49-1.el6_2.ppc64.rpm
• libpng-static-1.2.49-1.el6_2.i686.rpm
• libpng-devel-1.2.49-1.el6_2.x86_64.rpm
• libpng-debuginfo-1.2.49-1.el6_2.s390.rpm
• libpng-devel-1.2.10-17.el5_8.ppc64.rpm
• libpng-debuginfo-1.2.49-1.el6_2.i686.rpm
• libpng-1.2.10-17.el5_8.ia64.rpm
• libpng-1.2.49-1.el6_2.s390.rpm
• libpng-debuginfo-1.2.49-1.el6_2.ppc.rpm
• libpng-1.2.49-1.el6_2.ppc.rpm
• libpng-devel-1.2.10-17.el5_8.ppc.rpm
• libpng-devel-1.2.49-1.el6_2.s390x.rpm

Fixes

• This content is not included.BZ - 808139

CVEs

• CVE-2011-3048

References

• https://access.redhat.com/security/updates/classification/#moderate

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.