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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0940 Important: rhev-hypervisor6 security and bug fix update 3 October 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rhev-hypervisor6 Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2012-3515 CVE-2012-3480 Reference: ESB-2012.0879 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-1325.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-2012:1325-01 Product: Red Hat Enterprise Virtualization Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1325.html Issue date: 2012-10-02 CVE Names: CVE-2012-3480 CVE-2012-3515 ===================================================================== 1. Summary: An updated rhev-hypervisor6 package that fixes multiple security issues and one bug is now available. The Red Hat Security Response Team has rated this update as having important 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: 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 QEMU handled VT100 terminal escape sequences when emulating certain character devices. A guest user with privileges to write to a character device that is emulated on the host using a virtual console back-end could use this flaw to crash the qemu-kvm process on the host or, possibly, escalate their privileges on the host. (CVE-2012-3515) This flaw did not affect the default use of Red Hat Enterprise Virtualization Hypervisor: it is not possible to add a device that uses a virtual console back-end via Red Hat Enterprise Virtualization Manager. To specify a virtual console back-end for a device and therefore be vulnerable to this issue, the device would have to be created another way, for example, by using a VDSM hook. Note that at this time hooks can only be used on Red Hat Enterprise Linux hosts, not Red Hat Enterprise Virtualization Hypervisor. Multiple integer overflow flaws, leading to stack-based buffer overflows, were found in glibc's functions for converting a string to a numeric representation (strtod(), strtof(), and strtold()). If an application used such a function on attacker controlled input, it could cause the application to crash or, potentially, execute arbitrary code. (CVE-2012-3480) Red Hat would like to thank the Xen project for reporting the CVE-2012-3515 issue. This updated package provides updated components that include fixes for various security issues. These issues have no security impact on Red Hat Enterprise Virtualization Hypervisor itself, however. The security fixes included in this update address the following CVE numbers: CVE-2012-4244 (bind issue) CVE-2012-3524 (dbus issue) CVE-2012-2313, CVE-2012-2384, CVE-2012-2390, CVE-2012-3430, and CVE-2012-3552 (kernel issues) CVE-2012-3445 (libvirt issue) CVE-2011-3102 and CVE-2012-2807 (libxml2 issues) CVE-2011-1202, CVE-2011-3970, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871, and CVE-2012-2893 (libxslt issues) This updated Red Hat Enterprise Virtualization Hypervisor package also fixes the following bug: * Previously, the Manager listed all installed Hypervisor ISO images as available even when they did not support the VDSM compatibility version required by the selected host. The rhev-hypervisor6 package now maintains a text file for each installed ISO image. The file lists the VDSM compatibility versions supported by the relevant ISO image. The Manager uses this information to ensure that only those Hypervisor ISO images that are relevant to the selected host are listed. (BZ#856827) 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/): 847715 - CVE-2012-3480 glibc: Integer overflows, leading to stack-based buffer overflows in strto* related routines 851252 - CVE-2012-3515 qemu: VT100 emulation vulnerability 856827 - rhev-h: supported vdsm compatibility versions should be supplied along with rhev-h ISOs 856830 - rhev-hypervisor 6.3 Update 4 release 6. Package List: RHEV Hypervisor for RHEL-6: noarch: rhev-hypervisor6-6.3-20120926.0.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-2012-3480.html https://www.redhat.com/security/data/cve/CVE-2012-3515.html https://access.redhat.com/security/updates/classification/#important 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) iD8DBQFQaykhXlSAg2UNWIIRAl/dAJ99Fo/o53g99bHO5C5K0hx2DTomGACdGUbb I05MNTGHr0IuKq6cR1RK8K8= =Jdju - -----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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUGuGHe4yVqjM2NGpAQLNoA/+NVu9lw2O574P14P4fcmz3m+yMJt6CmLE rsWzLUVJIUB++1o4peO8dtgq3KqljyVo1rhVkSpcPbh8JPslQMVl8o2D+CFdLz6Z bF8F1ezmrqNwmGOcrZhMHLBGdiy1Bf+Ktt6D2KdwjVQ6fBB7chrA8Q4ich30ZUfb l89rXx4fynYowASS3+jynZ3pdKac2R6bfIB9Pn0vbNuON4pfeF+QUqqcSohEh7b0 6daHD9CgrxOAXU511/2gUsxQ21F2cPk+wdYmS823Be+iPTZgvZEpMAIVeGDm/Spm 7vRyn/4sHB8vXVZFZ18JX0d/jgq4CHJLvmD8Awosj+FlgRf94l6S0pCFutOA4FBT OBlyQV89kr+vsYDvsUkUF6nq7mWHF6NCssLGOhpEs9T6N6EEXLc9Ly+18VM+xRTO JURSvJVyc31VhI8E+XBXb+CEkmkEJQOJeu3frfbTmxW55CyVuQdwnMQ5t5zX6DAr KkfUspX4J9Bd9o4AQF2DrQKQvhHJzDfWcBqiZmYnDbKLBFqbqIf1RXOiNj6llETN 9ik4geRZvTxI8zCyoNHEMMqAq5XTDPsLsvYZGB8Pco9jV6pnPrDD+Es7BQRHcLeW bgc5K496bDy3jpiKdprEg8rm2CqUZ1AF0mU+OS3VfjuaOg+NyRfLCE4/1sRiW9v4 kC9cLSe2bnQ= =ezwx -----END PGP SIGNATURE-----