Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

  Vulnerabilities in Citrix Access Gateway Enterprise Edition Plug-in for
             Windows could result in arbitrary code execution
                              14 August 2014


        AusCERT Security Bulletin Summary

Product:           Citrix Access Gateway Enterprise Edition Plug-in
Publisher:         Citrix
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-2593 CVE-2011-2592 

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Vulnerabilities in Citrix Access Gateway Enterprise Edition Plug-in for 
Windows could result in arbitrary code execution


Created On Aug 09, 2012 Updated On Aug 09, 2012

Security Bulletin

See Applicable Products

Severity: High

Description of Problem

Vulnerabilities have been identified in an ActiveX based component of the 
Citrix Access Gateway Enterprise Edition Plug-in for Windows. The 
vulnerabilities, when triggered, could result in arbitrary code being executed
in the context of the browser user.

Where clients are configured to allow ActiveX objects to be launched by 
untrusted websites, there is a risk that the client could be affected by these
vulnerabilities. In such a deployment, the vulnerabilities could potentially 
be triggered by a malicious website that instantiates the ActiveX object.

These vulnerabilities affect the following versions of the Access Gateway 
Enterprise Edition software:

Version 10.0 prior to 10.0-69.4

Version 9.3 prior to 9.3-57.5

Version 9.2 all versions

Version 9.1 all versions

Version 9.0 all versions

The Windows plug-in for Access Gateway Standard and Advanced Editions are not
affected by this vulnerability.

This vulnerability has been assigned the following CVE numbers:



What Customers Should Do

Citrix recommends that customers upgrade client and server components of their
Citrix Access Gateway deployments to the latest versions. These can be 
obtained from the following location:


As an additional mitigation step, customers should consider using the ActiveX
killbit mechanism to prevent usage of the vulnerable control, this has the 
following CLSID:


For more information on setting a killbit, please consult the Microsoft 
Knowledgebase at the following location:


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 
Centre 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 to Citrix

Citrix welcomes input regarding the security of its products and considers any
and all potential vulnerabilities seriously. If you would like to report a 
security issue to Citrix, please compose an e-mail to secure@citrix.com 
stating the exact version of the product in which the vulnerability was found
and the steps needed to reproduce the vulnerability.

Applicable Products

    Access Gateway 10

    Access Gateway 9.0 Enterprise Edition

    Access Gateway 9.1 Enterprise Edition

    Access Gateway 9.2 Enterprise Edition

    Access Gateway 9.3 Enterprise Edition

- --------------------------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:


Australian Computer Emergency Response Team
The University of Queensland
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.
Comment: http://www.auscert.org.au/render.html?it=1967