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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0698 Important: kernel security update 25 July 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-2744 Reference: ESB-2012.0667 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-1114.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2012:1114-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1114.html Issue date: 2012-07-24 CVE Names: CVE-2012-2744 ===================================================================== 1. Summary: Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.0 Extended Update Support. The Red Hat Security Response Team has rated this update as having important 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server EUS (v. 6.0) - i386, noarch, ppc64, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: * A NULL pointer dereference flaw was found in the nf_ct_frag6_reasm() function in the Linux kernel's netfilter IPv6 connection tracking implementation. A remote attacker could use this flaw to send specially-crafted packets to a target system that is using IPv6 and also has the nf_conntrack_ipv6 kernel module loaded, causing it to crash. (CVE-2012-2744, Important) Red Hat would like to thank an anonymous contributor working with the Beyond Security SecuriTeam Secure Disclosure program for reporting this issue. Users should upgrade to these updated packages, which contain a backported patch to resolve this issue. The system must be rebooted for this 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/knowledge/articles/11258 To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system. 5. Bugs fixed (http://bugzilla.redhat.com/): 833402 - CVE-2012-2744 kernel: netfilter: null pointer dereference in nf_ct_frag6_reasm() 6. Package List: Red Hat Enterprise Linux Server EUS (v. 6.0): Source: kernel-2.6.32-71.40.1.el6.src.rpm i386: kernel-2.6.32-71.40.1.el6.i686.rpm kernel-debug-2.6.32-71.40.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-71.40.1.el6.i686.rpm kernel-debug-devel-2.6.32-71.40.1.el6.i686.rpm kernel-debuginfo-2.6.32-71.40.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-71.40.1.el6.i686.rpm kernel-devel-2.6.32-71.40.1.el6.i686.rpm kernel-headers-2.6.32-71.40.1.el6.i686.rpm noarch: kernel-doc-2.6.32-71.40.1.el6.noarch.rpm kernel-firmware-2.6.32-71.40.1.el6.noarch.rpm perf-2.6.32-71.40.1.el6.noarch.rpm ppc64: kernel-2.6.32-71.40.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-71.40.1.el6.ppc64.rpm kernel-debug-2.6.32-71.40.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-71.40.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-71.40.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-71.40.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-71.40.1.el6.ppc64.rpm kernel-devel-2.6.32-71.40.1.el6.ppc64.rpm kernel-headers-2.6.32-71.40.1.el6.ppc64.rpm s390x: kernel-2.6.32-71.40.1.el6.s390x.rpm kernel-debug-2.6.32-71.40.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-71.40.1.el6.s390x.rpm kernel-debug-devel-2.6.32-71.40.1.el6.s390x.rpm kernel-debuginfo-2.6.32-71.40.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-71.40.1.el6.s390x.rpm kernel-devel-2.6.32-71.40.1.el6.s390x.rpm kernel-headers-2.6.32-71.40.1.el6.s390x.rpm kernel-kdump-2.6.32-71.40.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-71.40.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-71.40.1.el6.s390x.rpm x86_64: kernel-2.6.32-71.40.1.el6.x86_64.rpm kernel-debug-2.6.32-71.40.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-71.40.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-71.40.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-71.40.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-71.40.1.el6.x86_64.rpm kernel-devel-2.6.32-71.40.1.el6.x86_64.rpm kernel-headers-2.6.32-71.40.1.el6.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-2012-2744.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFQDu8hXlSAg2UNWIIRAgJLAKCkd513kkX2nDKvQ+3L0Uy4qKyNWACgvmFP CZzwFvZos4XWCu/2UPV1mD8= =h7pW - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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