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Red Hat: RHSA-2015:1900-01 High: qemu-kvm-rhev Buffer Overflow

red hat
Calendar Grey October 15, 2015
Dist Redhat Esm H88
Critical patch released for Red Hat Enterprise Linux addressing a heap overflow vulnerability within qemu-kvm-rhev components.
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.
A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC emulation implementation handled certain packets received over the network. A privileged user inside a guest could use this flaw to crash the QEMU instance (denial of service) or potentially execute arbitrary code on the host. (CVE-2015-5279)
Red Hat would like to thank Qinghao Tang of QIHU 360 Inc. for reporting this issue.
All users of qemu-kvm-rhev are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, shut down and restart all running virtual machines for this update to take effect.

Topics%20covered

Topics Covered

security advisory DoS Red Hat Enterprise Linux important heap overflow OpenStack qemu-kvm-rhev

References

https://access.redhat.com/security/cve/CVE-2015-5279 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_7.2.src.rpm
x86_64: qemu-img-rhev-0.12.1.2-2.479.el6_7.2.x86_64.rpm qemu-kvm-rhev-0.12.1.2-2.479.el6_7.2.x86_64.rpm qemu-kvm-rhev-debuginfo-0.12.1.2-2.479.el6_7.2.x86_64.rpm qemu-kvm-rhev-tools-0.12.1.2-2.479.el6_7.2.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
High
Critical

Advisory ID: RHSA-2015:1896-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1896.html
Issue date: 2015-10-15

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 DoS Red Hat Enterprise Linux important heap overflow OpenStack qemu-kvm-rhev

Relevant Releases Architectures

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

Bugs Fixed

1256672 - CVE-2015-5279 qemu: Heap overflow vulnerability in ne2000_receive() function

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