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RHEL 5 : xen (RHSA-2013:0241)

low Nessus Plugin ID 64498

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team 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.

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 libxc, the Xen control library, handled excessively large kernel and ramdisk images when starting new guests.
A privileged guest user in a para-virtualized guest (a DomU) could create a crafted kernel or ramdisk image that, when attempting to use it during guest start, could result in an out-of-memory condition in the privileged domain (the Dom0). (CVE-2012-4544)

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, the xend service must be restarted for this update to take effect.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2013:0241

https://access.redhat.com/security/cve/cve-2012-4544

Plugin Details

Severity: Low

ID: 64498

File Name: redhat-RHSA-2013-0241.nasl

Version: 1.16

Type: local

Agent: unix

Published: 2/8/2013

Updated: 1/14/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5.9, p-cpe:/a:redhat:enterprise_linux:xen, p-cpe:/a:redhat:enterprise_linux:xen-libs, p-cpe:/a:redhat:enterprise_linux:xen-debuginfo, cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:xen-devel

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 2/7/2013

Reference Information

CVE: CVE-2012-4544

BID: 56289

RHSA: 2013:0241