Vulnerabilities in Access Gateway Standard and Advanced Edition could allow unauthorized configuration changesSeverity: Medium
Description of Problem
The Citrix Access Gateway appliance provides a web based administration console which can perform a limited set of administrative tasks. Cross site request forgery vulnerabilities have been identified in this component that may allow an attacker to perform unauthorized configuration changes on the Access Gateway appliance.
These vulnerabilities affect all Access Gateway model 2000 appliances with firmware versions up to and including 4.5.2. Access Gateway Enterprise Edition is not vulnerable to these issues.
Mitigating Factors
These vulnerabilities are only exploitable when an administrator is logged into the web based administration console. Citrix recommends that administrators do not visit other web sites while they are logged into the web based administration tool and that they close their web browser once they have logged out.
What Customers Should Do
These vulnerabilities have been addressed in Access Gateway appliance firmware version 4.5.5.
Due to this and other issues (listed below), Citrix strongly recommends that customers upgrade their Access Gateway appliance to firmware version 4.5.5 and upgrade to Access Gateway Advanced Edition 4.5 HF1. These upgrades can be obtained from the following locations:
Access Gateway Appliance firmware 4.5.5:
- http://support.citrix.com/article/CTX114028
Advanced Access Control HF1:
- http://support.citrix.com/article/CTX112803
Related Bulletins
For information on bulletins related to this issue, please see the Citrix Support website:
http://support.citrix.com/article/CTX113814
http://support.citrix.com/article/CTX113815
http://support.citrix.com/article/CTX113816
Acknowledgments
Citrix would like to thank security analyst Paul Johnston for working with us to protect Citrix customers
What Citrix Is Doing
Citrix is proactively notifying customers and channel partners about this potential security issue. This article is also available from the Citrix Knowledge Base at http://support.citrix.com/.
Obtaining Support on this Issue
If you require technical assistance with this issue, please contact Citrix Technical Support. Information for contacting Citrix Technical Support is available at http://support.citrix.com/.
Reporting Security Vulnerabilities to Citrix
Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities very seriously. If you would like to report a security issue to Citrix, please compose an e-mail to secure@citrix.com containing the exact version of the product in which the vulnerability was found and the steps needed to reproduce the vulnerability.
