Scientific Linux Security Update : kvm on SL5.x x86_64

This script is Copyright (C) 2015 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was found that KVM's Write to Model Specific Register (WRMSR)
instruction emulation would write non-canonical values passed in by
the guest to certain MSRs in the host's context. A privileged guest
user could use this flaw to crash the host. (CVE-2014-3610)

A race condition flaw was found in the way the Linux kernel's KVM
subsystem handled PIT (Programmable Interval Timer) emulation. A guest
user who has access to the PIT I/O ports could use this flaw to crash
the host. (CVE-2014-3611)

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.

or you may restart your system.

See also :

http://www.nessus.org/u?0902d8be

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 83029 ()

Bugtraq ID:

CVE ID: CVE-2014-3610
CVE-2014-3611

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now