Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2009.1065
Vulnerability in XenApp 4.5 Hotfix Rollup Pack 3 could
result in policy bypass
16 July 2009
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: XenApp 4.5
Publisher: Citrix
Operating System: Windows
Impact/Access: Unauthorised Access -- Existing Account
Resolution: Patch
CVE Names: CVE-2009-2453
Original Bulletin:
http://support.citrix.com/article/CTX118792
- --------------------------BEGIN INCLUDED TEXT--------------------
Vulnerability in XenApp 4.5 Hotfix Rollup Pack 3 could result in policy
bypass
Document ID: CTX118792 / Created On: Apr 22, 2009 / Updated On: Apr 22, 2009
Average Rating: 5 (1 ratings)
Severity: Medium
Description of Problem
A vulnerability has been identified in XenApp (formerly Presentation Server)
4.5 Hotfix Rollup Pack 3 that could result in an access policy defined using
the Access Gateway filters not being applied.
This vulnerability only affects XenApp deployments where Hotfix Rollup
Pack 3 is installed and Access Gateway Advanced Edition filters are being
used.
Mitigating Factors
The standard XenApp published application authorization policies, based on
users or groups, are not affected by this vulnerability.
What Customers Should Do
This vulnerability has been addressed in Hotfix Rollup Pack 4 for XenApp
4.5. Citrix recommends that affected customers apply this Hotfix Rollup
Pack, which can be obtained from the following locations:
Citrix XenApp 4.5 for Windows Server 2003:
EN - http://support.citrix.com/article/CTX119069
ES - http://support.citrix.com/article/CTX119074
FR - http://support.citrix.com/article/CTX119071
DE - http://support.citrix.com/article/CTX119072
JA - http://support.citrix.com/article/CTX119073
RU - http://support.citrix.com/article/CTX119471
Citrix XenApp 4.5 for Windows Server 2003 x64 Editions:
EN - http://support.citrix.com/article/CTX119075
ES - http://support.citrix.com/article/CTX119079
FR - http://support.citrix.com/article/CTX119076
DE - http://support.citrix.com/article/CTX119077
JA - http://support.citrix.com/article/CTX119078
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
Center at http://support.citrix.com/.
Obtaining Support on This Issue
If you require technical assistance with this issue, please contact Citrix
Technical Support. Contact details for Citrix Technical Support are
available at http://www.citrix.com/site/ss/supportContacts.asp.
Reporting Security Vulnerabilities to Citrix
Citrix welcomes input regarding the security of its products and considers
any and all potential vulnerabilities seriously. If you would like to report
a security issue to Citrix, please compose an e-mail to secure@citrix.com
stating the exact version of the product in which the vulnerability was
found and the steps needed to reproduce the vulnerability
This document applies to:
* Feature Pack 1 for Presentation Server 4.5
* Presentation Server 4.5 SE Edition
* Presentation Server 4.5 for Windows Server 2003
* Presentation Server 4.5 for Windows Server 2003 x64 Edition
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
http://www.auscert.org.au/render.html?it=3192
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iD8DBQFKXsAgNVH5XJJInbgRAl5hAJkB9WBgBJWFs9uyUEuS39et0J6qWQCffVcr
1DkvlalHi61cVx/8+9M4/F4=
=HDrL
-----END PGP SIGNATURE-----