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Moderate Security Update: Red Hat OpenStack 6 RHSA-2015-1674 Qemu-Kvm Leak

red hat
Calendar Grey August 24, 2015
Dist Redhat Esm H88
Important security patch released for qemu-kvm-rhev addressing vulnerabilities in data exposure within Red Hat OpenStack Platform 6.
Updated qemu-kvm-rhev packages that fix two security issues are now available for Red Hat Enterprise Linux OpenStack Platform 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.
Qemu emulator built with the RTL8139 emulation support is vulnerable to an information leakage flaw, while processing network packets under RTL8139 controller's C+ mode of operation. A guest user could use this flaw to read upto 65KB of uninitialised Qemu heap memory. (CVE-2015-5165)
Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Donghai Zhu of Alibaba as the original reporter.
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 Red Hat information exposure moderate issue qemu-kvm-rhev

References

https://access.redhat.com/security/cve/CVE-2015-5165 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7:
Source: qemu-kvm-rhev-2.1.2-23.el7_1.8.src.rpm
x86_64: libcacard-devel-rhev-2.1.2-23.el7_1.8.x86_64.rpm libcacard-rhev-2.1.2-23.el7_1.8.x86_64.rpm libcacard-tools-rhev-2.1.2-23.el7_1.8.x86_64.rpm qemu-img-rhev-2.1.2-23.el7_1.8.x86_64.rpm qemu-kvm-common-rhev-2.1.2-23.el7_1.8.x86_64.rpm qemu-kvm-rhev-2.1.2-23.el7_1.8.x86_64.rpm qemu-kvm-rhev-debuginfo-2.1.2-23.el7_1.8.x86_64.rpm qemu-kvm-tools-rhev-2.1.2-23.el7_1.8.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/


Advisory ID: RHSA-2015:1674-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1674.html
Issue date: 2015-08-24

Topic

Updated qemu-kvm-rhev packages that fix two security issues are nowavailable for Red Hat Enterprise Linux OpenStack Platform 6.Red Hat Product Security has rated this update as having Moderate securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat information exposure moderate issue qemu-kvm-rhev

Relevant Releases Architectures

Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7 - x86_64

Bugs Fixed

1248760 - CVE-2015-5165 Qemu: rtl8139 uninitialized heap memory information leakage to guest (XSA-140)

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