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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.1002 Important: rhev-hypervisor6 security and bug fix update 19 October 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rhev-hypervisor6 Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-4423 CVE-2012-3412 Reference: ESB-2012.0993 ESB-2012.0983 ESB-2012.0971 ESB-2012.0939 ESB-2012.0938 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-1375.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: rhev-hypervisor6 security and bug fix update Advisory ID: RHSA-2012:1375-01 Product: Red Hat Enterprise Virtualization Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1375.html Issue date: 2012-10-18 CVE Names: CVE-2012-3412 ===================================================================== 1. Summary: An updated rhev-hypervisor6 package that fixes one security issue and one bug is now available. 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: RHEV Hypervisor for RHEL-6 - noarch 3. Description: The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the way socket buffers (skb) requiring TSO (TCP segment offloading) were handled by the sfc driver. If the skb did not fit within the minimum-size of the transmission queue, the network card could repeatedly reset itself. A remote attacker could use this flaw to cause a denial of service. (CVE-2012-3412) Red Hat would like to thank Ben Hutchings of Solarflare (tm) for reporting this issue. This updated package provides updated components that include a fix for one security issue. This issue had no security impact on Red Hat Enterprise Virtualization Hypervisor itself, however. The security fix included in this update addresses the following CVE number: CVE-2012-4423 (libvirt issue) This update also fixes the following bug: * A dependency issue was found between the rhev-hypervisor-tools and rhev-hypervisor6-tools packages. Every time a user with one of the -tools packages installed ran "yum update", the -tools package they had installed was removed and the other one installed. Even though rhev-hypervisor-tools obsoleted rhev-hypervisor6-tools, this update includes an updated rhev-hypervisor6-tools package that corrects this issue. Note that the package does not have meaningful content, is only here to fix the dependency issue, and may be removed by a future update. (BZ#855391) This update includes the ovirt-node build from RHBA-2012:1374: https://rhn.redhat.com/errata/RHBA-2012-1374.html Users of the Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to this updated package, which fixes these issues. 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 upgrade Hypervisors in Red Hat Enterprise Virtualization 2.2 environments using the disk image provided by this package, refer to: https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/h tml/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Ent erprise_Virtualization_Hypervisors.html To upgrade Hypervisors in Red Hat Enterprise Virtualization 3.0 environments using the disk image provided by this package, refer to: https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/h tml/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Ent erprise_Virtualization_Hypervisors.html 5. Bugs fixed (http://bugzilla.redhat.com/): 844714 - CVE-2012-3412 kernel: sfc: potential remote denial of service through TCP MSS option 855391 - rhev-hypervisor6-tools and rhev-hypervisor-tools obselete each other 863163 - rhev-hypervisor 6.3 Update 5 release 6. Package List: RHEV Hypervisor for RHEL-6: noarch: rhev-hypervisor6-6.3-20121012.0.el6_3.noarch.rpm rhev-hypervisor6-tools-6.3-20121012.0.el6_3.noarch.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-2012-3412.html https://access.redhat.com/security/updates/classification/#important https://rhn.redhat.com/errata/RHBA-2012-1374.html https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Enterprise_Virtualization_Hypervisors.html 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) iD8DBQFQgDUZXlSAg2UNWIIRAr9WAJ419XMNWqyJEU8GPHcRu50Im+zcSwCfVC5P CRvG8wissLVwzp6lSbwgA10= =FQ+a - -----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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