Red Hat Enterprise Linux 5: RHSA-2012:1130-01 Moderate: Xen Security Update
red hat
July 31, 2012
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.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/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 flaw was found in the way the pyGrub boot loader handled compressed
kernel images. A privileged guest user in a para-virtualized guest (a DomU)
could use this flaw to create a crafted kernel image that, when attempting
to boot it, could result in an out-of-memory condition in the privileged
domain (the Dom0). (CVE-2012-2625)
Red Hat would like to thank Xinli Niu for reporting this issue.
All users of xen are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing the
updated packages, the xend service must be restarted for this update to
take effect.
Topics Covered
References
https://access.redhat.com/security/cve/CVE-2012-2625 https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-libs-3.0.3-135.el5_8.4.i386.rpm
x86_64:
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.4.x86_64.rpm
xen-libs-3.0.3-135.el5_8.4.i386.rpm
xen-libs-3.0.3-135.el5_8.4.x86_64.rpm
RHEL Desktop Multi OS (v. 5 client):
Source:
i386:
xen-3.0.3-135.el5_8.4.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-devel-3.0.3-135.el5_8.4.i386.rpm
x86_64:
xen-3.0.3-135.el5_8.4.x86_64.rpm
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.4.x86_64.rpm
xen-devel-3.0.3-135.el5_8.4.i386.rpm
xen-devel-3.0.3-135.el5_8.4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-libs-3.0.3-135.el5_8.4.i386.rpm
ia64:
xen-debuginfo-3.0.3-135.el5_8.4.ia64.rpm
xen-libs-3.0.3-135.el5_8.4.ia64.rpm
x86_64:
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.4.x86_64.rpm
xen-libs-3.0.3-135.el5_8.4.i386.rpm
xen-libs-3.0.3-135.el5_8.4.x86_64.rpm
RHEL Virtualization (v. 5 server):
Source:
i386:
xen-3.0.3-135.el5_8.4.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm
xen-devel-3.0.3-135.el5_8.4.i386.rpm
ia64:
xen-3.0.3-135.el5_8.4.ia64.rpm
xen-debuginfo-3.0.3-135.el5_8.4.ia64.rpm
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Advisory ID: RHSA-2012:1130-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:1130.html
Issue date: 2012-07-31
Topic
Updated xen packages that fix one security issue are now available forRed Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topics Covered
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
821676 - CVE-2012-2625 xen: pv bootloader doesn't check the size of the bzip2 or lzma compressed kernel
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