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Scientific Linux Security Update : qemu-kvm on SL6.x i386/x86_64 (20150421)

medium Nessus Plugin ID 82989

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Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM- allocated buffer boundaries in the host's QEMU process address space with attacker-provided data. (CVE-2014-8106)

This update also fixes the following bug :

 - Previously, the effective downtime during the last phase of a live migration would sometimes be much higher than the maximum downtime specified by 'migration_downtime' in vdsm.conf. This problem has been corrected. The value of 'migration_downtime' is now honored and the migration is aborted if the downtime cannot be achieved.

After installing this update, shut down all running virtual machines.
Once all virtual machines have shut down, start them again for this update to take effect.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?5131a6ed

Plugin Details

Severity: Medium

ID: 82989

File Name: sl_20150421_qemu_kvm_on_SL6_x.nasl

Version: 1.4

Type: local

Agent: unix

Published: 4/22/2015

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 4.6

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:qemu-guest-agent, p-cpe:/a:fermilab:scientific_linux:qemu-kvm-tools, x-cpe:/o:fermilab:scientific_linux, p-cpe:/a:fermilab:scientific_linux:qemu-img, p-cpe:/a:fermilab:scientific_linux:qemu-kvm, p-cpe:/a:fermilab:scientific_linux:qemu-kvm-debuginfo

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

Patch Publication Date: 4/21/2015

Vulnerability Publication Date: 12/8/2014

Reference Information

CVE: CVE-2014-8106