RHEL 5 : xen (RHSA-2012:1130)

medium Nessus Plugin ID 61376

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Synopsis

The remote Red Hat host is missing a security update for xen.

Description

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2012:1130 advisory.

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL xen package based on the guidance in RHSA-2012:1130.

Plugin Details

Severity: Medium

ID: 61376

File Name: redhat-RHSA-2012-1130.nasl

Version: 1.21

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/1/2012

Updated: 11/4/2024

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

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Low

Base Score: 2.7

Temporal Score: 2

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

CVSS Score Source: CVE-2012-2625

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

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

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: 7/31/2012

Reference Information

CVE: CVE-2012-2625

BID: 53650

RHSA: 2012:1130

Detections

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