-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: libpng security update Advisory ID: RHSA-2011:1105-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1105.html Issue date: 2011-07-28 CVE Names: CVE-2011-2501 CVE-2011-2690 CVE-2011-2692 ===================================================================== 1. Summary: Updated libpng packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. 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 Red Hat Enterprise 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. 4. 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/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 717084 - CVE-2011-2501 libpng: regression of CVE-2004-0421 in 1.2.23+ 720607 - CVE-2011-2690 libpng: buffer overwrite in png_rgb_to_gray 720612 - CVE-2011-2692 libpng: Invalid read when handling empty sCAL chunks 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm i386: libpng-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm x86_64: libpng-1.2.46-1.el6_1.i686.rpm libpng-1.2.46-1.el6_1.x86_64.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm i386: libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm libpng-static-1.2.46-1.el6_1.i686.rpm x86_64: libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.x86_64.rpm libpng-static-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm x86_64: libpng-1.2.46-1.el6_1.i686.rpm libpng-1.2.46-1.el6_1.x86_64.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm x86_64: libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.x86_64.rpm libpng-static-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm i386: libpng-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm ppc64: libpng-1.2.46-1.el6_1.ppc.rpm libpng-1.2.46-1.el6_1.ppc64.rpm libpng-debuginfo-1.2.46-1.el6_1.ppc.rpm libpng-debuginfo-1.2.46-1.el6_1.ppc64.rpm libpng-devel-1.2.46-1.el6_1.ppc.rpm libpng-devel-1.2.46-1.el6_1.ppc64.rpm s390x: libpng-1.2.46-1.el6_1.s390.rpm libpng-1.2.46-1.el6_1.s390x.rpm libpng-debuginfo-1.2.46-1.el6_1.s390.rpm libpng-debuginfo-1.2.46-1.el6_1.s390x.rpm libpng-devel-1.2.46-1.el6_1.s390.rpm libpng-devel-1.2.46-1.el6_1.s390x.rpm x86_64: libpng-1.2.46-1.el6_1.i686.rpm libpng-1.2.46-1.el6_1.x86_64.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm i386: libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-static-1.2.46-1.el6_1.i686.rpm ppc64: libpng-debuginfo-1.2.46-1.el6_1.ppc64.rpm libpng-static-1.2.46-1.el6_1.ppc64.rpm s390x: libpng-debuginfo-1.2.46-1.el6_1.s390x.rpm libpng-static-1.2.46-1.el6_1.s390x.rpm x86_64: libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm libpng-static-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm i386: libpng-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm x86_64: libpng-1.2.46-1.el6_1.i686.rpm libpng-1.2.46-1.el6_1.x86_64.rpm libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm libpng-devel-1.2.46-1.el6_1.i686.rpm libpng-devel-1.2.46-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libpng-1.2.46-1.el6_1.src.rpm i386: libpng-debuginfo-1.2.46-1.el6_1.i686.rpm libpng-static-1.2.46-1.el6_1.i686.rpm x86_64: libpng-debuginfo-1.2.46-1.el6_1.x86_64.rpm libpng-static-1.2.46-1.el6_1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-2501.html https://www.redhat.com/security/data/cve/CVE-2011-2690.html https://www.redhat.com/security/data/cve/CVE-2011-2692.html https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFOManQXlSAg2UNWIIRAuaqAJ0Sn+1OeUAX7QhB2Kk/SKNByAhTugCgofrB 950xRIwxHo1aClHvqeU93+Y= =APX+ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce