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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2013.0347 Important: kvm security update 8 March 2013 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kvm Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux WS/Desktop 5 Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2012-6075 Reference: ESB-2013.0334 ESB-2013.0176 ESB-2013.0079 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2013-0608.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kvm security update Advisory ID: RHSA-2013:0608-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0608.html Issue date: 2013-03-07 CVE Names: CVE-2012-6075 ===================================================================== 1. Summary: Updated kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 5. 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: RHEL Desktop Multi OS (v. 5 client) - x86_64 RHEL Virtualization (v. 5 server) - x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. A flaw was found in the way QEMU-KVM emulated the e1000 network interface card when the host was configured to accept jumbo network frames, and a guest using the e1000 emulated driver was not. A remote attacker could use this flaw to crash the guest or, potentially, execute arbitrary code with root privileges in the guest. (CVE-2012-6075) All users of kvm are advised to upgrade to these updated packages, which contain backported patches to correct this issue. Note that the procedure in the Solution section must be performed before this update will 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 The following procedure must be performed before this update will take effect: 1) Stop all KVM guest virtual machines. 2) Either reboot the hypervisor machine or, as the root user, remove (using "modprobe -r [module]") and reload (using "modprobe [module]") all of the following modules which are currently running (determined using "lsmod"): kvm, ksm, kvm-intel or kvm-amd. 3) Restart the KVM guest virtual machines. 5. Bugs fixed (http://bugzilla.redhat.com/): 889301 - CVE-2012-6075 qemu: e1000 driver buffer overflow when processing large packets when SBP and LPE flags are disabled 6. Package List: RHEL Desktop Multi OS (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kvm-83-262.el5_9.1.src.rpm x86_64: kmod-kvm-83-262.el5_9.1.x86_64.rpm kmod-kvm-debug-83-262.el5_9.1.x86_64.rpm kvm-83-262.el5_9.1.x86_64.rpm kvm-debuginfo-83-262.el5_9.1.x86_64.rpm kvm-qemu-img-83-262.el5_9.1.x86_64.rpm kvm-tools-83-262.el5_9.1.x86_64.rpm RHEL Virtualization (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kvm-83-262.el5_9.1.src.rpm x86_64: kmod-kvm-83-262.el5_9.1.x86_64.rpm kmod-kvm-debug-83-262.el5_9.1.x86_64.rpm kvm-83-262.el5_9.1.x86_64.rpm kvm-debuginfo-83-262.el5_9.1.x86_64.rpm kvm-qemu-img-83-262.el5_9.1.x86_64.rpm kvm-tools-83-262.el5_9.1.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-2012-6075.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 2013 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFROOkWXlSAg2UNWIIRAjcfAJ0QgD1VleyOB+4UxDZAjSjYTVA9wwCglGi4 O4IzdGIyKRqVJxNg8OBd1yk= =+dhI - -----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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUTlieu4yVqjM2NGpAQKgnBAAvu5TNGQ4P7/fbHWCu/Mtlnl4K+r7u3xU 5YpbNSeTtXGYZUqyyvereM/AQ5m5Zb2mVFYL4WF0sYNXOu/BW0jFHMWgnEckMa4D I6B2/mwPmSuaiyPDVRqyXLn/p9u715vWZ9BkmqvPyltlzd6q8UC1cmafvYxa/vBx Tl5oAtg0l3LjpEkRhEIslCJhWtu/P6hVRA1b97FFzQ2pU+6NrRwO5oLkxieuOg/Z Edx6Ddofna2yaiPxVR+rxo6VbozSbervZFQeSFBZTBp7hAeJsTq//tgjEdby6zwu wuGWlwcB1Mf0ztlE3Jp/i263RBBYTWdHIbdYo72HprvF5H656A5WH2Zs5myECyDV lQU3Zv8LESdOeuBnK9mbuoCyZUVKya3Z5g0oTSnpxjuAhXNdDT/V5D2BQd+rbjSs RborFW10ePo3lmses0UsffRJU9S3K8YT8naIKPspDpXTp0kraplnAcMwU6IzFICf mblI7cxtuT6fMY7RYnMIP8zLUKsuZlzCRprJ/H+osi8pa8K8jYt71E57D8kg0y1z iNw8ev7NcBrP8qnI+0Jxc2KOyoKGFtL7LkZR/GCobfiDtB+IzL1E8roeg8pLdepM d711ShQ38bqkBBBI4j2nMhsqbhVYLIU1lAUQhQS/5gkfV45e4yxHutq+LJpiBlEs V7Ugxc0b8j8= =nO2u -----END PGP SIGNATURE-----