28 May 2015
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1401 Important: qemu-kvm security update 28 May 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: qemu-kvm Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-3456 Reference: ASB-2015.0051 ESB-2015.1379 ESB-2015.1372 ESB-2015.1367 ESB-2015.1359 ESB-2015.1343 ESB-2015.1326 ESB-2015.1319 ESB-2015.1308 ESB-2015.1307 ESB-2015.1306 ESB-2015.1304 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-1031.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2015:1031-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1031.html Issue date: 2015-05-27 CVE Names: CVE-2015-3456 ===================================================================== 1. Summary: Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 6.5 Extended Update Support. Red Hat Product Security 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 HPC Node EUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.5) - i386, x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the user-space component for running virtual machines using KVM. An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest. (CVE-2015-3456) Red Hat would like to thank Jason Geffner of CrowdStrike for reporting this issue. All qemu-kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again 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. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1218611 - CVE-2015-3456 qemu: fdc: out-of-bounds fifo buffer memory access 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.5): Source: qemu-kvm-0.12.1.2-2.415.el6_5.15.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-img-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-kvm-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.415.el6_5.15.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.5): Source: qemu-kvm-0.12.1.2-2.415.el6_5.15.src.rpm i386: qemu-guest-agent-0.12.1.2-2.415.el6_5.15.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.15.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-img-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-kvm-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.15.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.415.el6_5.15.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/ 7. References: https://access.redhat.com/security/cve/CVE-2015-3456 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <email@example.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVZb7HXlSAg2UNWIIRAse7AJ9ddnWco1rUrMYVwUex3DGOBMuK5gCdES2Z NtLD3OLQ5kietKEpqy5SUHM= =Uufz - -----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 firstname.lastname@example.org and we will forward your request to the appropriate person. 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