Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

      Login Form Hijacking Vulnerability in Citrix NetScaler Gateway
                                31 May 2016


        AusCERT Security Bulletin Summary

Product:           Citrix NetScaler Gateway
Publisher:         Citrix
Operating System:  Network Appliance
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-4945  

Original Bulletin: 

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


Login Form Hijacking Vulnerability in Citrix NetScaler Gateway

Security Bulletin


Created: 27 May 2016

Modified: 27 May 2016

Description of Problem

An attacker may hijack form values in a NetScaler Gateway login form via 
cookie tampering resulting in stolen user credentials.

The following vulnerability has been addressed:

CVE-2016-4945: Login Form Hijacking vulnerability in Citrix NetScaler Gateway

These vulnerabilities affect the following versions of Citrix NetScaler 

Version 11.0 earlier than 11.0 Build 66.11.

Versions 10.5, 10.5.e and 10.1 are unaffected by this vulnerability.

What Customers Should Do

This vulnerability has been addressed in the following versions of Citrix 
NetScaler Gateway:

    Citrix NetScaler Gateway version 11.0 Build 66.11 and later

These new versions can be downloaded from the following location:


Citrix recommends that customers using affected versions of the NetScaler 
Gateway upgrade to a version of the appliance firmware that contains the fixes
for these issues as soon as their normal patching schedule allows.


Citrix thanks Daniel Schliebner of PERSICON consultancy GmbH for working with
us to protect Citrix customers.

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


Date 		Change

May 26th 2016 	Initial Publishing

Applicable Products

    NetScaler Gateway 11.0

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


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