SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2015:0927-1) (Venom)

High Nessus Plugin ID 83853

Synopsis

The remote SUSE host is missing one or more security updates.

Description

Xen was updated to fix two security issues and a bug :

CVE-2015-3456: A buffer overflow in the floppy drive emulation, which could be used to carry out denial of service attacks or potential code execution against the host. This vulnerability is also known as VENOM.

CVE-2015-3340: Xen did not initialize certain fields, which allowed certain remote service domains to obtain sensitive information from memory via a (1) XEN_DOMCTL_gettscinfo or (2) XEN_SYSCTL_getdomaininfolist request.

An exception in setCPUAffinity when restoring guests. (bsc#910441)

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 Software Development Kit 11 SP3 :

zypper in -t patch sdksp3-xen=10673

SUSE Linux Enterprise Server 11 SP3 :

zypper in -t patch slessp3-xen=10673

SUSE Linux Enterprise Desktop 11 SP3 :

zypper in -t patch sledsp3-xen=10673

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

See Also

https://bugzilla.suse.com/910441

https://bugzilla.suse.com/927967

https://bugzilla.suse.com/929339

http://www.nessus.org/u?0d807a7f

https://www.suse.com/security/cve/CVE-2015-3456.html

http://www.nessus.org/u?ea869628

Plugin Details

Severity: High

ID: 83853

File Name: suse_SU-2015-0927-1.nasl

Version: $Revision: 2.7 $

Type: local

Published: 2015/05/27

Modified: 2016/05/11

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.7

Temporal Score: 6

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:ND

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-doc-pdf, p-cpe:/a:novell:suse_linux:xen-kmp-default, p-cpe:/a:novell:suse_linux:xen-kmp-pae, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-domU, cpe:/o:novell:suse_linux:11

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/05/21

Reference Information

CVE: CVE-2015-3340, CVE-2015-3456

BID: 74248, 74640

OSVDB: 121091, 122072