Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2015.1359
Citrix Security Advisory for CVE-2015-3456
21 May 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Citrix XenServer
Publisher: Citrix
Operating System: Citrix XenServer
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-3456
Reference: ASB-2015.0051
ESB-2015.1343
ESB-2015.1326
ESB-2015.1319
ESB-2015.1308
ESB-2015.1307
ESB-2015.1306
ESB-2015.1304
Original Bulletin:
http://support.citrix.com/article/CTX201078
- --------------------------BEGIN INCLUDED TEXT--------------------
Citrix Security Advisory for CVE-2015-3456
CTX201078 Created on May 13, 2015 Updated on May 20, 2015
Security Bulletin Severity : High
Description of Problem
Citrix is aware of the recent vulnerability that has been reported against the
Xen hypervisor. This issue is known as the 'VENOM' vulnerability and has been
assigned the following CVE number:
CVE-2015-3456: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3456
Citrix is actively analysing the impact of this vulnerability on affected
products. Additional details and product-specific guidance can be found in the
following sections of this document.
Impacted Citrix Products
Citrix XenServer
All supported versions of Citrix XenServer are impacted by this issue.
Hotfixes have been released to address this issue. Citrix strongly recommends
that affected customers install the relevant hotfixes as soon as possible.
These hotfixes are available on the Citrix website at the following locations:
Citrix XenServer 6.5 SP1: CTX142483 -
https://support.citrix.com/article/CTX142483
Citrix XenServer 6.5: CTX142482 - https://support.citrix.com/article/CTX142482
Citrix XenServer 6.2 SP1: CTX142481 -
https://support.citrix.com/article/CTX142481
Citrix XenServer 6.1: CTX142480 - https://support.citrix.com/article/CTX142480
Citrix XenServer 6.0.2: CTX142478 -
https://support.citrix.com/article/CTX142478
Customers using Citrix XenServer 6.0.2 in the Common Criteria evaluated
configuration should apply the following hotfix: CTX142479 -
https://support.citrix.com/article/CTX142479
Citrix XenServer 6.0.0: CTX142477 -
https://support.citrix.com/article/CTX142477
Citrix NetScaler Service Delivery Appliance
Citrix is actively investigating the potential impact of this issue on Citrix
NetScaler Service Delivery Appliances. In order to exploit this issue, a
malicious user would require administrative access within a virtual appliance.
In deployments where the virtual appliances and their administrators are
trusted, this issue would not present a risk.
Further information and mitigation guidance will be added to this document as
soon as it is available.
Citrix XenClient Enterprise
Citrix XenClient Enterprise is not believed to be affected by this issue.
Citrix Desktop Player for Mac
Citrix Desktop Player for Mac is not believed to be affected by this issue.
What Customers Should Do
Citrix is actively analysing the impact of this vulnerability and any required
remediation steps will be added to this document as soon as they are
available.
Citrix recommends that customers monitor this document for any updates.
Customers can register for security bulletin alerts at the following address:
http://support.citrix.com/profile/watches/
What Citrix Is Doing
Citrix is notifying customers and channel partners about this potential
security issue. This article is also available from the Citrix Knowledge
Center at http://support.citrix.com/.
Obtaining Support on This Issue
If you require technical assistance with this issue, please contact Citrix
Technical Support. Contact details for Citrix Technical Support are available
at http://www.citrix.com/site/ss/supportContacts.asp.
Reporting Security Vulnerabilities
Citrix welcomes input regarding the security of its products and considers any
and all potential vulnerabilities seriously. For guidance on how to report
security-related issues to Citrix, please see the following document:
CTX081743 Reporting Security Issues to Citrix
Changelog
Date Change
May 13th 2015 Initial publication
May 18th 2015 Reformatting and addition of XenServer, NetScaler SDX and
XenClient Enterprise sections
May 20th 2015 Update to XenServer and Desktop Player sections
Applicable Products
XenServer 6.5
XenServer 6.2.0
XenServer 6.1.0
XenServer 6.0.2
XenServer 6.0
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iQIVAwUBVV1HhBLndAQH1ShLAQJNYBAAsCIv9i2oBwRODdKtHOO1aGEbZihic1Ho
Hs7R3azQ6mo/YOx2eQXL+Zuu4gfjioldQ6YQvANsIRRDO+oL7zxLlSLA1x1nF5nS
iS9CESf+CkplZ+c3RmbHUtK0XAaK6+LnqVyQrlw1RB9W+JJhuPSdY+jR+HgKfAt7
rxVmxYC2LHPx5IKZtcWL/Le+tmHv0BXrF5WCzsNwi/nAL86T2OM7C3HeOxEg1wX2
TAcCHvonLjLAOUuPiDN7bqyga3ps3eByzFRnrxa1T2VBn0O/6nHvyF4jwkRIPnmW
MvLTaEazp9f8Fs1CkrgOqgzlqEI2w0q01YF+L2itQhcJNd9DHMDMUD3H3xmDTkkp
PhmbXbfajiPC1vK6/SDU96J+uMSZM8rLqXPE8tF2zwCtDrsSXndB0h/Acawttaf6
OE780TYEvxBQTNiC02bfNIBZ/mTenwGFxHDDMtIqCMe+A2jLMFxCdWdNR77d/UgY
yQ/NdKZvZen+EIEnRWuwVt/ooWlTFoIWz4hSHyT0SLxnecdEQEyKB0KGI6rAnq/8
8MENLsNoiTaBN1FTxlFsVtnhtcpyeEfn7np2tnafbZB+goseaqH20N+Jr2p2v+L0
QdzYyb1GuJJnWSdGw2mWAGlww/i9rw0ZS3RRcmGqnvlK6Vz9ArtD2Q5etM/xr68q
v+JOuC0apBQ=
=IQuO
-----END PGP SIGNATURE-----