Scientific Linux Security Update : kvm on SL5.x x86_64 (20150625)

high Nessus Plugin ID 84538
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

A flaw was found in the way QEMU's AMD PCnet Ethernet emulation handled multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled could potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. (CVE-2015-3209)

KVM must be 'restarted' before this update will take effect.

Shutdown all KVM virtual machines.

Either reboot or unload and reload the following kernel modules : kvm, ksm, kvm-intel or kvm-amd.

Start the KVM virtual machines.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?ffeb2091

Plugin Details

Severity: High

ID: 84538

File Name: sl_20150625_kvm_on_SL5_x.nasl

Version: 2.5

Type: local

Agent: unix

Published: 7/6/2015

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

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

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

Patch Publication Date: 6/25/2015

Vulnerability Publication Date: 6/15/2015

Reference Information

CVE: CVE-2015-3209