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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3085
                     Citrix StoreFront Security Update
                             9 September 2020

===========================================================================

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

Product:           Citrix StoreFront
Publisher:         Citrix
Operating System:  Network Appliance
Impact/Access:     Read-only Data Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-8200  

Original Bulletin: 
   https://support.citrix.com/article/CTX277455

- --------------------------BEGIN INCLUDED TEXT--------------------

Citrix StoreFront Security Update

Reference: CTX277455

Category : High

Created  : 08 Sep 2020

Modified : 08 Sep 2020

Applicable Products

  o StoreFront

Description of Problem

An issue has been discovered in Citrix StoreFront that, if exploited, would
allow an attacker who is authenticated on the same Microsoft Active Directory
domain as a Citrix StoreFront server to read arbitrary files from that server.

This issue has the following identifier:

  o CVE-2020-8200

The issue affects the following supported Current Release (CR) versions of
Citrix StoreFront:

  o Citrix StoreFront before 1909

The issue affects the following supported Long Term Service Release (LTSR)
versions of Citrix StoreFront:

  o Citrix StoreFront 1912 LTSR before CU1 (1912.0.1000)
  o Citrix StoreFront 3.12 for 7.15 LTSR before CU5 Hotfix (3.12.5001)
  o Citrix StoreFront 3.0 for 7.6 LTSR before CU8 Hotfix (3.0.8001)

Note that Citrix StoreFront is included as part of Citrix Virtual Apps and
Desktops. Therefore, some customers may be affected who have not independently
installed Citrix StoreFront.

Customers running Citrix Virtual Apps and Desktops 2003 should note that the
version of Citrix StoreFront included in that release, 1912 LTSR, is one of the
affected versions.

Mitigating Factors

If users are not in the same Microsoft Active Directory domain as the Citrix
StoreFront server, the vulnerability is not exploitable, even if the users are
authenticated in a transitively trusted domain. Note that this applies even if
the user is logged into the Citrix StoreFront server.

What Customers Should Do

The issue has been addressed in the following Citrix StoreFront versions:

  o Citrix StoreFront 1912 CU1 (1912.0.1000) and later versions of Citrix
    StoreFront 1912 LTSR
  o Citrix StoreFront 3.0 for 7.6 LTSR CU8 Hotfix (3.0.8001) and later versions
    of StoreFront 3.0 for 7.6 LTSR
  o Citrix StoreFront 3.12 for 7.15 LTSR CU5 Hotfix (3.12.5001) and later
    versions of StoreFront 3.12 for 7.15 LTSR

Citrix strongly recommends that customers running affected versions of Citrix
StoreFront, both CR and LTSR versions, upgrade to a fixed version as soon as
possible.

The latest versions of Citrix StoreFront can be downloaded from the following
location:

https://www.citrix.com/downloads/storefront/

https://support.citrix.com/article/CTX277537

https://support.citrix.com/article/CTX277538

Acknowledgements

Citrix would like to thank Harrison Neal of Patch Advisor for working with us
to protect Citrix customers.

Changelog

+--------------------------+--------------------------------------------------+
|Date                      |Change                                            |
+--------------------------+--------------------------------------------------+
|2020-09-08                |Initial Publication                               |
+--------------------------+--------------------------------------------------+

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