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AUSCERT External Security Bulletin Redistribution
ESB-2016.1357
Login Form Hijacking Vulnerability in Citrix NetScaler Gateway
31 May 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: Citrix NetScaler Gateway
Publisher: Citrix
Operating System: Network Appliance
Virtualisation
Windows
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-4945
Original Bulletin:
http://support.citrix.com/article/CTX213313
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CTX213313
Login Form Hijacking Vulnerability in Citrix NetScaler Gateway
Security Bulletin
Medium
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
Gateway:
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:
https://www.citrix.com/downloads/netscaler-gateway.html
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.
Acknowledgements
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
Changelog
Date Change
May 26th 2016 Initial Publishing
Applicable Products
NetScaler Gateway 11.0
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