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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.0100 Moderate: kernel security and bug fix update 23 January 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux WS/Desktop 5 Impact/Access: Denial of Service -- Existing Account Unauthorised Access -- Remote/Unauthenticated Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2012-5515 CVE-2012-4444 CVE-2012-1568 Reference: ESB-2012.1201 ESB-2012.1155 ESB-2012.1150 ESB-2012.1059 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2013-0168.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security and bug fix update Advisory ID: RHSA-2013:0168-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0168.html Issue date: 2013-01-22 CVE Names: CVE-2012-1568 CVE-2012-4444 CVE-2012-5515 ===================================================================== 1. Summary: Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 5. 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 (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * It was found that the Xen hypervisor implementation did not perform range checking on the guest provided values in multiple hypercalls. A privileged guest user could use this flaw to trigger long loops, leading to a denial of service (Xen hypervisor hang). (CVE-2012-5515, Moderate) * It was found that when running a 32-bit binary that uses a large number of shared libraries, one of the libraries would always be loaded at a predictable address in memory. An attacker could use this flaw to bypass the Address Space Layout Randomization (ASLR) security feature. (CVE-2012-1568, Low) * A flaw was found in the way the Linux kernel's IPv6 implementation handled overlapping, fragmented IPv6 packets. A remote attacker could potentially use this flaw to bypass protection mechanisms (such as a firewall or intrusion detection system (IDS)) when sending network packets to a target system. (CVE-2012-4444, Low) Red Hat would like to thank the Xen project for reporting CVE-2012-5515, and Antonios Atlasis working with Beyond Security's SecuriTeam Secure Disclosure program and Loganaden Velvindron of AFRINIC for reporting CVE-2012-4444. This update also fixes several bugs. Space precludes documenting all of these changes in this advisory. Documentation for these changes will be available shortly from the Red Hat Enterprise Linux 5.9 Technical Notes document linked to in the References section. Users should upgrade to these updated packages, which contain backported patches to correct these issues. 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/): 804947 - CVE-2012-1568 kernel: execshield: predictable ascii armour base address 874835 - CVE-2012-4444 kernel: net: acceptation of overlapping ipv6 fragments 877397 - CVE-2012-5515 kernel: xen: Several memory hypercall operations allow invalid extent order values 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-348.1.1.el5.src.rpm i386: kernel-2.6.18-348.1.1.el5.i686.rpm kernel-PAE-2.6.18-348.1.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-PAE-devel-2.6.18-348.1.1.el5.i686.rpm kernel-debug-2.6.18-348.1.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-debug-devel-2.6.18-348.1.1.el5.i686.rpm kernel-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.i686.rpm kernel-devel-2.6.18-348.1.1.el5.i686.rpm kernel-headers-2.6.18-348.1.1.el5.i386.rpm kernel-xen-2.6.18-348.1.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-xen-devel-2.6.18-348.1.1.el5.i686.rpm noarch: kernel-doc-2.6.18-348.1.1.el5.noarch.rpm x86_64: kernel-2.6.18-348.1.1.el5.x86_64.rpm kernel-debug-2.6.18-348.1.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-348.1.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.x86_64.rpm kernel-devel-2.6.18-348.1.1.el5.x86_64.rpm kernel-headers-2.6.18-348.1.1.el5.x86_64.rpm kernel-xen-2.6.18-348.1.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-348.1.1.el5.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-348.1.1.el5.src.rpm i386: kernel-2.6.18-348.1.1.el5.i686.rpm kernel-PAE-2.6.18-348.1.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-PAE-devel-2.6.18-348.1.1.el5.i686.rpm kernel-debug-2.6.18-348.1.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-debug-devel-2.6.18-348.1.1.el5.i686.rpm kernel-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.i686.rpm kernel-devel-2.6.18-348.1.1.el5.i686.rpm kernel-headers-2.6.18-348.1.1.el5.i386.rpm kernel-xen-2.6.18-348.1.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-348.1.1.el5.i686.rpm kernel-xen-devel-2.6.18-348.1.1.el5.i686.rpm ia64: kernel-2.6.18-348.1.1.el5.ia64.rpm kernel-debug-2.6.18-348.1.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.ia64.rpm kernel-debug-devel-2.6.18-348.1.1.el5.ia64.rpm kernel-debuginfo-2.6.18-348.1.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.ia64.rpm kernel-devel-2.6.18-348.1.1.el5.ia64.rpm kernel-headers-2.6.18-348.1.1.el5.ia64.rpm kernel-xen-2.6.18-348.1.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-348.1.1.el5.ia64.rpm kernel-xen-devel-2.6.18-348.1.1.el5.ia64.rpm noarch: kernel-doc-2.6.18-348.1.1.el5.noarch.rpm ppc: kernel-2.6.18-348.1.1.el5.ppc64.rpm kernel-debug-2.6.18-348.1.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-348.1.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-348.1.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.ppc64.rpm kernel-devel-2.6.18-348.1.1.el5.ppc64.rpm kernel-headers-2.6.18-348.1.1.el5.ppc.rpm kernel-headers-2.6.18-348.1.1.el5.ppc64.rpm kernel-kdump-2.6.18-348.1.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-348.1.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-348.1.1.el5.ppc64.rpm s390x: kernel-2.6.18-348.1.1.el5.s390x.rpm kernel-debug-2.6.18-348.1.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.s390x.rpm kernel-debug-devel-2.6.18-348.1.1.el5.s390x.rpm kernel-debuginfo-2.6.18-348.1.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.s390x.rpm kernel-devel-2.6.18-348.1.1.el5.s390x.rpm kernel-headers-2.6.18-348.1.1.el5.s390x.rpm kernel-kdump-2.6.18-348.1.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-348.1.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-348.1.1.el5.s390x.rpm x86_64: kernel-2.6.18-348.1.1.el5.x86_64.rpm kernel-debug-2.6.18-348.1.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-348.1.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-348.1.1.el5.x86_64.rpm kernel-devel-2.6.18-348.1.1.el5.x86_64.rpm kernel-headers-2.6.18-348.1.1.el5.x86_64.rpm kernel-xen-2.6.18-348.1.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-348.1.1.el5.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-2012-1568.html https://www.redhat.com/security/data/cve/CVE-2012-4444.html https://www.redhat.com/security/data/cve/CVE-2012-5515.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.9_Technical_Notes/kernel.html#RHSA-2013-0168 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2013 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD4DBQFQ/u8hXlSAg2UNWIIRApEXAJ0b2CjrKygVjA0hPpPDhH9uMUMMRACXc6Fv QrIwgNIlVkxL5UEujHZ/+A== =Tgfp - -----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. 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