Vulnerabilities in Citrix Presentation Server's Program Neighborhood Agent could result in arbitrary code execution

Severity: High

Description of Problem

Citrix Program Neighborhood Agent can be installed on a client machine to access applications published on Citrix Presentation Server. If a user manually launches an attacker specified file that is associated with the Program Neighborhood Agent, implementation flaws in this component could allow the execution of arbitrary code in the context of the user running the agent.

This vulnerability is present in all versions of the Citrix Program Neighborhood Agent for Windows earlier than 10.100.

What Customers Should Do

This vulnerability has been addressed in the Citrix Program Neighborhood Agent for Windows version 10.100 and later. Citrix strongly recommends that customers upgrade their Citrix Program Neighborhood Agent for Windows to version 10.100. These upgrades can be obtained from the following location:

http://www.citrix.com/English/SS/downloads/downloads.asp?dID=2755

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.