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Vulnerability Note VU#798364

Citrix Presentation Server Client vulnerable to arbitrary code execution

Overview

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

I. Description

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.

II. Impact

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.

III. Solution

Upgrade


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.

Systems Affected

VendorStatusDate NotifiedDate Updated
CitrixVulnerable2-Mar-2007

References


http://support.citrix.com/article/CTX112589
http://secunia.com/advisories/24350/
http://securitytracker.com/alerts/2007/Mar/1017712.html
http://www.securityfocus.com/bid/22762

Credit

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

Date Public:2007-03-01
Date First Published:2007-03-02
Date Last Updated:2007-03-07
CERT Advisory: 
CVE-ID(s): 
NVD-ID(s): 
US-CERT Technical Alerts: 
Metric:6.30
Document Revision:4

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