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Red Hat: RHSA-2016-0085-01 Important Qemu-KVM-Rhev Remote Code Execution

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Calendar Grey January 28, 2016
Scroller Redhat
New qemu-kvm-rhev updates released to resolve a critical security vulnerability affecting Red Hat Enterprise Linux.
Updated qemu-kvm-rhev packages that fix one security issue are now available for Red Hat Enterprise Linux OpenStack Platform 5.0 for Red Hat Enterprise Linux 6

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

Summary

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM.
An out-of-bounds read/write flaw was discovered in the way QEMU's Firmware Configuration device emulation processed certain firmware configurations. A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance or, potentially, execute arbitrary code on the host with privileges of the QEMU process. (CVE-2016-1714)
Red Hat would like to thank Donghai Zhu of Alibaba for reporting this issue.
All qemu-kvm-rhev 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.

Topics%20covered

Topics Covered

security advisory remote code execution red hat enterprise important update qemu-kvm-rhev

References

https://access.redhat.com/security/cve/CVE-2016-1714 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6:
Source: qemu-kvm-rhev-0.12.1.2-2.479.el6_7.4.src.rpm
x86_64: qemu-img-rhev-0.12.1.2-2.479.el6_7.4.x86_64.rpm qemu-kvm-rhev-0.12.1.2-2.479.el6_7.4.x86_64.rpm qemu-kvm-rhev-debuginfo-0.12.1.2-2.479.el6_7.4.x86_64.rpm qemu-kvm-rhev-tools-0.12.1.2-2.479.el6_7.4.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


Severity
important
Lowest
Low
Medium
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Critical

Advisory ID: RHSA-2016:0085-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0085.html
Issue date: 2016-01-28

Topic

Updated qemu-kvm-rhev packages that fix one security issue are nowavailable for Red Hat Enterprise Linux OpenStack Platform 5.0 for Red HatEnterprise Linux 6.Red Hat Product Security has rated this update as having Important securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory remote code execution red hat enterprise important update qemu-kvm-rhev

Relevant Releases Architectures

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6 - x86_64

Bugs Fixed

1296060 - CVE-2016-1714 Qemu: nvram: OOB r/w access in processing firmware configurations

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