CentOS 6 : kernel (CESA-2013:0830)

high Nessus Plugin ID 66521

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important 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 kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit that affects Red Hat Enterprise Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

Solution

Update the affected kernel packages.

Plugin Details

Severity: High

ID: 66521

File Name: centos_RHSA-2013-0830.nasl

Version: 1.13

Type: local

Agent: unix

Family: CentOS Local Security Checks

Published: 5/21/2013

Updated: 9/16/2022

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.6

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2013-2094

Vulnerability Information

CPE: p-cpe:/a:centos:centos:kernel-headers, cpe:/o:centos:centos:6, p-cpe:/a:centos:centos:kernel-debug, p-cpe:/a:centos:centos:kernel-firmware, p-cpe:/a:centos:centos:perf, p-cpe:/a:centos:centos:python-perf, p-cpe:/a:centos:centos:kernel, p-cpe:/a:centos:centos:kernel-doc, p-cpe:/a:centos:centos:kernel-debug-devel, p-cpe:/a:centos:centos:kernel-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/16/2013

Vulnerability Publication Date: 5/14/2013

CISA Known Exploited Vulnerability Due Dates: 10/6/2022

Exploitable With

CANVAS (CANVAS)

Core Impact

Reference Information

CVE: CVE-2013-2094

RHSA: 2013:0830

Detections

Analytics