Scientific Linux Security Update : kvm on SL5.x x86_64 (Venom)

High Nessus Plugin ID 83457

Synopsis

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

Description

An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest. (CVE-2015-3456)

Note: The following procedure must be performed before this update will take effect :

1) Stop all KVM guest virtual machines.

2) Either reboot the hypervisor machine or, as the root user, remove (using 'modprobe -r [module]') and reload (using 'modprobe [module]') all of the following modules which are currently running (determined using 'lsmod'): kvm, ksm, kvm-intel or kvm-amd.

3) Restart the KVM guest virtual machines.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?c1b92660

Plugin Details

Severity: High

ID: 83457

File Name: sl_20150513_kvm_on_SL5_x.nasl

Version: $Revision: 2.8 $

Type: local

Agent: unix

Published: 2015/05/14

Modified: 2015/10/23

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.7

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/05/13

Exploitable With

Core Impact

Reference Information

CVE: CVE-2015-3456

IAVA: 2015-A-0115