RHEL 5 : kvm (RHSA-2011:0028)

low Nessus Plugin ID 63968

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Synopsis

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

Description

Updated kvm packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having low 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.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel.

A data structure field in kvm_vcpu_ioctl_x86_get_vcpu_events() in QEMU-KVM was not initialized properly before being copied to user-space. A privileged host user with access to '/dev/kvm' could use this flaw to leak kernel stack memory to user-space. (CVE-2010-4525)

Red Hat would like to thank Stephan Mueller of atsec information security for reporting this issue.

These updated packages also fix several bugs. Documentation for these bug fixes will be available shortly in the 'kvm' section of the Red Hat Enterprise Linux 5.6 Technical Notes, linked to in the References.

All KVM users should upgrade to these updated packages, which resolve this issue as well as fixing the bugs noted in the Technical Notes.
Note: The procedure in the Solution section must be performed before this update will take effect.

Solution

Update the affected packages.

Plugin Details

Severity: Low

ID: 63968

File Name: redhat-RHSA-2011-0028.nasl

Version: 1.17

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 1/24/2013

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kmod-kvm, p-cpe:/a:redhat:enterprise_linux:kmod-kvm-debug, p-cpe:/a:redhat:enterprise_linux:kvm, p-cpe:/a:redhat:enterprise_linux:kvm-qemu-img, p-cpe:/a:redhat:enterprise_linux:kvm-tools, cpe:/o:redhat:enterprise_linux:5

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: 1/13/2011

Vulnerability Publication Date: 1/10/2011

Reference Information

CVE: CVE-2010-4525

BID: 45676

RHSA: 2011:0028

Detections

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