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Red Hat 5: RHSA-2015:2065-01 Important Heap Overflow DoS Issue

red hat
Calendar Grey November 16, 2015
Scroller Redhat
Recent security updates for Xen packages in Red Hat 5 focus on critical vulnerabilities. It's essential to verify that your environment is both protected and aligns with compliance standards.
Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5

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

The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux.
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 xen users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, all running fully-virtualized guests must be restarted for this update to take effect.

Topics%20covered

Topics Covered

security advisory security issue Red Hat heap overflow Denial of Service xen update Important impact

References

https://access.redhat.com/security/cve/CVE-2015-5279 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source: xen-3.0.3-147.el5_11.src.rpm
i386: xen-debuginfo-3.0.3-147.el5_11.i386.rpm xen-libs-3.0.3-147.el5_11.i386.rpm
x86_64: xen-debuginfo-3.0.3-147.el5_11.i386.rpm xen-debuginfo-3.0.3-147.el5_11.x86_64.rpm xen-libs-3.0.3-147.el5_11.i386.rpm xen-libs-3.0.3-147.el5_11.x86_64.rpm
RHEL Desktop Multi OS (v. 5 client):
Source: xen-3.0.3-147.el5_11.src.rpm
i386: xen-3.0.3-147.el5_11.i386.rpm xen-debuginfo-3.0.3-147.el5_11.i386.rpm xen-devel-3.0.3-147.el5_11.i386.rpm
x86_64: xen-3.0.3-147.el5_11.x86_64.rpm xen-debuginfo-3.0.3-147.el5_11.i386.rpm xen-debuginfo-3.0.3-147.el5_11.x86_64.rpm xen-devel-3.0.3-147.el5_11.i386.rpm xen-devel-3.0.3-147.el5_11.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source: xen-3.0.3-147.el5_11.src.rpm
i386: xen-debuginfo-3.0.3-147.el5_11.i386.rpm xen-libs-3.0.3-147.el5_11.i386.rpm
ia64: xen-debuginfo-3.0.3-147.el5_11.ia64.rpm xen-libs-3.0.3-147.el5_11.ia64.rpm
x86_64: xen-debuginfo-3.0.3-147.el5_11.i386.rpm xen-debuginfo-3.0.3-147.el5_11.x86_64.rpm xen-libs-3.0.3-147.el5_11.i386.rpm xen-libs-3.0.3-147.el5_11.x86_64.rpm
RHEL Virtualization (v. 5 server):
Source: xen-3.0.3-147.el5_11.src.rpm
i386: xen-3.0.3-147.el5_11.i386.rpm xen-debuginfo-3.0.3-147.el5_11.i386.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:2065-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:2065.html
Issue date: 2015-11-16

Topic

Updated xen packages that fix one security issue are now available for RedHat Enterprise Linux 5.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 security issue Red Hat heap overflow Denial of Service xen update Important impact

Relevant Releases Architectures

RHEL Desktop Multi OS (v. 5 client) - i386, x86_64

RHEL Virtualization (v. 5 server) - i386, ia64, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Bugs Fixed

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

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