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Sicherheit: Preisgabe von Informationen in QEMU
Aktuelle Meldungen Distributionen
Name: Preisgabe von Informationen in QEMU
ID: RHSA-2015:1683-01
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux OpenStack Platform
Datum: Di, 25. August 2015, 14:45
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5165
Applikationen: QEMU

Originalnachricht

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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: qemu-kvm-rhev security update
Advisory ID: RHSA-2015:1683-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1683.html
Issue date: 2015-08-25
CVE Names: CVE-2015-5165
=====================================================================

1. Summary:

Updated qemu-kvm-rhev packages that fix one security issue are now
available for Red Hat Enterprise Linux OpenStack Platform 5.

Red Hat Product Security has rated this update as having Moderate 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 OpenStack Platform 5.0 for RHEL 6 - x86_64
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 7 - 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-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.

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/):

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

6. Package List:

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6:

Source:
qemu-kvm-rhev-0.12.1.2-2.479.el6_7.1.src.rpm

x86_64:
qemu-img-rhev-0.12.1.2-2.479.el6_7.1.x86_64.rpm
qemu-kvm-rhev-0.12.1.2-2.479.el6_7.1.x86_64.rpm
qemu-kvm-rhev-debuginfo-0.12.1.2-2.479.el6_7.1.x86_64.rpm
qemu-kvm-rhev-tools-0.12.1.2-2.479.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux OpenStack Platform 5.0 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/

7. References:

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

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2015 Red Hat, Inc.
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