Synopsis
Moderate: libpng security update
Type/Severity
Security Advisory: Moderate
Topic
Updated libpng and libpng10 packages that fix a couple of security issues
are now available for Red Hat Enterprise Linux 2.1, 4, and 5.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
Description
The libpng packages contain a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files.
A flaw was discovered in libpng that could result in libpng trying to
free() random memory if certain, unlikely error conditions occurred. If a
carefully-crafted PNG file was loaded by an application linked against
libpng, it could cause the application to crash or, potentially, execute
arbitrary code with the privileges of the user running the application.
(CVE-2009-0040)
A flaw was discovered in the way libpng handled PNG images containing
"unknown" chunks. If an application linked against libpng attempted to
process a malformed, unknown chunk in a malicious PNG image, it could cause
the application to crash. (CVE-2008-1382)
Users of libpng and libpng10 should upgrade to these updated packages,
which contain backported patches to correct these issues. All running
applications using libpng or libpng10 must be restarted for the update to
take effect.
Solution
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259
Affected Products
-
Red Hat Enterprise Linux Server 5 x86_64
-
Red Hat Enterprise Linux Server 5 ia64
-
Red Hat Enterprise Linux Server 5 i386
-
Red Hat Enterprise Linux Server 4 x86_64
-
Red Hat Enterprise Linux Server 4 ia64
-
Red Hat Enterprise Linux Server 4 i386
-
Red Hat Enterprise Linux Server 2 ia64
-
Red Hat Enterprise Linux Server 2 i386
-
Red Hat Enterprise Linux Server - Extended Update Support 5.3 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 5.3 ia64
-
Red Hat Enterprise Linux Server - Extended Update Support 5.3 i386
-
Red Hat Enterprise Linux Server - Extended Update Support 4.7 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 4.7 ia64
-
Red Hat Enterprise Linux Server - Extended Update Support 4.7 i386
-
Red Hat Enterprise Linux Server - AUS 5.3 x86_64
-
Red Hat Enterprise Linux Server - AUS 5.3 ia64
-
Red Hat Enterprise Linux Server - AUS 5.3 i386
-
Red Hat Enterprise Linux Workstation 5 x86_64
-
Red Hat Enterprise Linux Workstation 5 i386
-
Red Hat Enterprise Linux Workstation 4 x86_64
-
Red Hat Enterprise Linux Workstation 4 ia64
-
Red Hat Enterprise Linux Workstation 4 i386
-
Red Hat Enterprise Linux Workstation 2 ia64
-
Red Hat Enterprise Linux Workstation 2 i386
-
Red Hat Enterprise Linux Desktop 5 x86_64
-
Red Hat Enterprise Linux Desktop 5 i386
-
Red Hat Enterprise Linux Desktop 4 x86_64
-
Red Hat Enterprise Linux Desktop 4 i386
-
Red Hat Enterprise Linux for IBM z Systems 5 s390x
-
Red Hat Enterprise Linux for IBM z Systems 4 s390x
-
Red Hat Enterprise Linux for IBM z Systems 4 s390
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 5.3 s390x
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.7 s390x
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.7 s390
-
Red Hat Enterprise Linux for Power, big endian 5 ppc
-
Red Hat Enterprise Linux for Power, big endian 4 ppc
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.3 ppc
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.7 ppc
-
Red Hat Enterprise Linux Server from RHUI 5 x86_64
-
Red Hat Enterprise Linux Server from RHUI 5 i386
Fixes
- BZ - 486355 - CVE-2009-0040 libpng arbitrary free() flaw
- BZ - 441839 - CVE-2008-1382 libpng unknown chunk handling flaw
CVEs
References
Vulmon