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Test ID:1.3.6.1.4.1.25623.1.0.870822
Category:Red Hat Local Security Checks
Title:RedHat Update for xen RHSA-2012:1236-01
Summary:The remote host is missing an update for the 'xen'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'xen'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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 QEMU handled VT100 terminal escape sequences
when emulating certain character devices. A guest user with privileges to
write to a character device that is emulated on the host using a virtual
console back-end could use this flaw to crash the qemu process on the
host or, possibly, escalate their privileges on the host. (CVE-2012-3515)

This flaw did not affect the default use of the Xen hypervisor
implementation in Red Hat Enterprise Linux 5. This problem only affected
fully-virtualized guests that have a serial or parallel device that uses a
virtual console (vc) back-end. By default, the virtual console back-end is
not used for such devices. Only guests explicitly configured to use them
in this way were affected.

Red Hat would like to thank the Xen project for reporting this issue.

All users of xen are advised to upgrade to these updated packages, which
correct this issue. After installing the updated packages, all
fully-virtualized guests must be restarted for this update to take effect.

Affected Software/OS:
xen on Red Hat Enterprise Linux (v. 5 server)

Solution:
Please Install the Updated Packages.

CVSS Score:
7.2

CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-3515
BugTraq ID: 55413
http://www.securityfocus.com/bid/55413
Debian Security Information: DSA-2543 (Google Search)
http://www.debian.org/security/2012/dsa-2543
Debian Security Information: DSA-2545 (Google Search)
http://www.debian.org/security/2012/dsa-2545
http://security.gentoo.org/glsa/glsa-201309-24.xml
https://security.gentoo.org/glsa/201604-03
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00003.html
http://www.openwall.com/lists/oss-security/2012/09/05/10
RedHat Security Advisories: RHSA-2012:1233
http://rhn.redhat.com/errata/RHSA-2012-1233.html
RedHat Security Advisories: RHSA-2012:1234
http://rhn.redhat.com/errata/RHSA-2012-1234.html
RedHat Security Advisories: RHSA-2012:1235
http://rhn.redhat.com/errata/RHSA-2012-1235.html
RedHat Security Advisories: RHSA-2012:1236
http://rhn.redhat.com/errata/RHSA-2012-1236.html
RedHat Security Advisories: RHSA-2012:1262
http://rhn.redhat.com/errata/RHSA-2012-1262.html
RedHat Security Advisories: RHSA-2012:1325
http://rhn.redhat.com/errata/RHSA-2012-1325.html
http://secunia.com/advisories/50472
http://secunia.com/advisories/50528
http://secunia.com/advisories/50530
http://secunia.com/advisories/50632
http://secunia.com/advisories/50689
http://secunia.com/advisories/50860
http://secunia.com/advisories/50913
http://secunia.com/advisories/51413
http://secunia.com/advisories/55082
SuSE Security Announcement: SUSE-SU-2012:1129 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
SuSE Security Announcement: SUSE-SU-2012:1132 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
SuSE Security Announcement: SUSE-SU-2012:1133 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
SuSE Security Announcement: SUSE-SU-2012:1135 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
SuSE Security Announcement: SUSE-SU-2012:1162 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
SuSE Security Announcement: SUSE-SU-2012:1202 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00024.html
SuSE Security Announcement: SUSE-SU-2012:1203 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00026.html
SuSE Security Announcement: SUSE-SU-2012:1205 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00027.html
SuSE Security Announcement: SUSE-SU-2012:1320 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00002.html
SuSE Security Announcement: openSUSE-SU-2012:1153 (Google Search)
http://lists.opensuse.org/opensuse-updates/2012-09/msg00051.html
SuSE Security Announcement: openSUSE-SU-2012:1170 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00016.html
SuSE Security Announcement: openSUSE-SU-2012:1172 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
SuSE Security Announcement: openSUSE-SU-2012:1174 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
SuSE Security Announcement: openSUSE-SU-2012:1572 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
SuSE Security Announcement: openSUSE-SU-2012:1573 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
http://www.ubuntu.com/usn/USN-1590-1
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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