AusCERT - ESB-2012.0735 - [Win] Citrix Access Gateway: Multiple vulnerabilities

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ESB-2012.0735 - [Win] Citrix Access Gateway: Multiple vulnerabilities
Date: 03 August 2012

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0735
    Security Vulnerabilities in Citrix Access Gateway Standard Edition
                               3 August 2012

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Citrix Access Gateway
Publisher:         Citrix
Operating System:  Windows
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
                   Modify Arbitrary Files   -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://support.citrix.com/article/CTX133648

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Security Vulnerabilities in Citrix Access Gateway Standard Edition

Document ID: CTX133648/ Created On: 31-Jul-2012/ Updated On: 31-Jul-2012

Average Rating:   (3 ratings)

Severity: Critical

Description of Problem

Three security vulnerabilities have been identified in Access Gateway Standard
Edition:
* Directory traversal in Access Gateway Standard Edition 5.0.x prior to version
5.0.4 (critical severity)
* Access Gateway Standard Edition 5.0.x can act as an open proxy (high
severity)
* Text content injection in Access Gateway Standard Edition 5.0.3 and 5.0.4
(low severity)

Access Gateway Standard Edition versions 4.5.x and 4.6.x and currently
supported versions of NetScaler Access Gateway Enterprise Edition are not
affected by these vulnerabilities.

What Customers Should Do

A patch for version 5.0.4 of the Access Gateway Standard Edition firmware has
been released to address these vulnerabilities. Citrix strongly recommends that
all customers using affected versions of Access Gateway Standard Edition apply
this patch to their appliances as soon as possible. This patch can be found at
the following location:
https://www.citrix.com/English/ss/downloads/results.asp?productID=15005&c1=pov2305020&c2=sot36239

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:

Access Gateway 4.5 Standard Edition
Access Gateway 4.6 Advanced Edition
Access Gateway 4.6 Standard Edition
Access Gateway 5.0
Access Gateway VPX 4.6

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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