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             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.0227 -- [Win]
Weakness in Citrix Presentation Server and Citrix Desktop Server installer
                 could result in credentials being logged
                               3 March 2008


        AusCERT Security Bulletin Summary

Product:              Citrix Presentation Server 4.5 (all versions)
                      Citrix Desktop Server 1.0
Publisher:            Citrix
Operating System:     Windows Server 2003
Impact:               Access Confidential Data
Access:               Existing Account

Original Bulletin:    http://support.citrix.com/article/CTX116491

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Weakness in Citrix Presentation Server and Citrix Desktop Server installer 
could result in credentials being logged

Document ID: CTX116228   
Created On: Feb 27, 2008   
Updated On: Feb 27, 2008

Average Rating: 1

View products this document applies to link to products this document applies 

Severity: Low

Description of Problem

Under specific circumstances, the installation process for Citrix Presentation 
Server 4.5 and Citrix Desktop Server 1.0 could result in database credentials 
being written to an MSI logfile.

This weakness affects the following products:

       Citrix Presentation Server 4.5 (all versions)
       Citrix Desktop Server 1.0

Mitigating Factors

If MSI logging was not enabled when the product was installed, the credentials 
will not be logged.

By default, MSI logging is not enabled. In order for this problem to occur,
MSI logging would need to be enabled at the time the affected product is 
installed. MSI logging can be enabled by either a command-line option specified
at install time, a registry setting, or a group policy setting.

It is general good practice to ensure that access to logfiles is restricted to 
appropriate users. When access to the logfiles is suitably restricted, there 
is a much reduced risk of the credentials being disclosed.

What Customers Should Do

Customers that have installed an affected product should ensure that any 
generated logfiles are suitably locked down or deleted.

Customers that are planning to install an affected product have a number of 

       Ensure MSI logging is disabled
       Ensure that logfiles are written to a suitably locked down location
       Apply the supplied MSI transform described below

Citrix has released an MSI transform that, when applied, will prevent a 
vulnerable installer logging the database credentials even if MSI logging is 
enabled. The transform is available at the following location:


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 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.

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