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

This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.


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.

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

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'.

Risk factor :

High / CVSS Base Score : 7.7
(CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C)
CVSS Temporal Score : 6.0
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: SuSE Local Security Checks

Nessus Plugin ID: 83853 ()

Bugtraq ID: 74248
74640

CVE ID: CVE-2015-3340
CVE-2015-3456

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