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Red Hat OpenStack 7: RHSA-2015:1718 Moderate: Qemu-KVM-Rhev Info Leak

red hat
Calendar Grey September 3, 2015
Dist Redhat Esm H88
A minor security patch for qemu-kvm-rhev fixes a vulnerability related to information disclosure impacting Red Hat OpenStack Platform version 7.
Updated qemu-kvm-rhev packages that fix one security issue are now available for Red Hat Enterprise Linux OpenStack Platform 7

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 information leak flaw was found in the way QEMU's RTL8139 emulation implementation processed network packets under RTL8139 controller's C+ mode of operation. An unprivileged guest user could use this flaw to read up to 65 KB of uninitialized 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 moderate Red Hat information leak KVM

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 7.0 for RHEL 7:
Source: qemu-kvm-rhev-2.1.2-23.el7_1.8.src.rpm
x86_64: 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/


Severity
important
Lowest
Low
Medium
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Critical

Advisory ID: RHSA-2015:1718-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1718
Issue date: 2015-09-03

Topic

Updated qemu-kvm-rhev packages that fix one security issue are nowavailable for Red Hat Enterprise Linux OpenStack Platform 7.Red Hat Product Security has rated this update as having Moderate 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 moderate Red Hat information leak KVM

Relevant Releases Architectures

Red Hat Enterprise Linux OpenStack Platform 7.0 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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