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Citrix Presentation Server Client vulnerable to arbitrary code execution

Vulnerability Note VU#798364

Original Release Date: 2007-03-02 | Last Revised: 2007-03-07


A vulnerability in the Citrix Presentation Server Client could allow a remote attacker to execute arbitrary code on a vulnerable system.


Independent Computing Architecture (ICA) is an application server protocol used by Citrix products. The Citrix Presentation Server Client for Windows includes support for making ICA connections through proxy servers. An unspecified implementation flaw in this functionality may allow an attacker to execute arbitrary code in the context of the client process.

Citrix notes that this vulnerability is present in all versions of the Citrix Presentation Server Client for Windows earlier than 10.0.


By convincing a user to view a specially crafted web page, a remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user.



Citrix has published updated versions of the Presentation Server Client software to address this issue. Please see the Systems Affected section of this document for additional details.

Vendor Information


Citrix Affected

Updated:  March 02, 2007



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Citrix has published support document CTX112589 in response to this issue. Users are encouraged to review this document and update their software accordingly.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector



Thanks to Citrix for reporting this vulnerability. Citrix, in turn, credits Karl Lynn of Juniper Networks with reporting this information to them.

This document was written by Chad R Dougherty.

Other Information

CVE IDs: None
Severity Metric: 6.30
Date Public: 2007-03-01
Date First Published: 2007-03-02
Date Last Updated: 2007-03-07 16:07 UTC
Document Revision: 4

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