SUSE SLED11 / SLES11 Security Update : kvm (SUSE-SU-2016:0020-1)

critical Nessus Plugin ID 87859
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 SUSE host is missing one or more security updates.

Description

This update for kvm fixes the following issues :

Security issues fixed :

- CVE-2015-7512: The receive packet size is now checked in the emulated pcnet driver, eliminating buffer overflow and potential security issue by malicious guest systems.
(bsc#957162)

- CVE-2015-8345: A infinite loop in processing command block list was fixed that could be exploit by malicious guest systems (bsc#956829).

Bugs fixed :

- Fix cases of wrong clock values in kvmclock timekeeping (bsc#947164 and bsc#953187)

- Enforce pxe rom sizes to ensure migration compatibility.
(bsc#950590)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11-SP3 :

zypper in -t patch slessp3-kvm-12294=1

SUSE Linux Enterprise Desktop 11-SP3 :

zypper in -t patch sledsp3-kvm-12294=1

To bring your system up-to-date, use 'zypper patch'.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=947164

https://bugzilla.suse.com/show_bug.cgi?id=950590

https://bugzilla.suse.com/show_bug.cgi?id=953187

https://bugzilla.suse.com/show_bug.cgi?id=956829

https://bugzilla.suse.com/show_bug.cgi?id=957162

https://www.suse.com/security/cve/CVE-2015-7512/

https://www.suse.com/security/cve/CVE-2015-8345/

http://www.nessus.org/u?26348bb2

Plugin Details

Severity: Critical

ID: 87859

File Name: suse_SU-2016-0020-1.nasl

Version: 2.11

Type: local

Agent: unix

Published: 1/12/2016

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 7.8

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kvm, cpe:/o:novell:suse_linux:11

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/5/2016

Vulnerability Publication Date: 1/8/2016

Reference Information

CVE: CVE-2015-7512, CVE-2015-8345