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             AUSCERT External Security Bulletin Redistribution

                  Citrix SD-WAN Multiple Security Updates
                              23 October 2018


        AusCERT Security Bulletin Summary

Product:           Citrix NetScaler SD-WAN
Publisher:         Citrix
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Provide Misleading Information  -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
                   Reduced Security                -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-17448 CVE-2018-17447 CVE-2018-17446
                   CVE-2018-17445 CVE-2018-17444 CVE-2016-4793

Original Bulletin: 

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Citrix SD-WAN Multiple Security Updates

Security Bulletin | 2 found this helpful
| Created: 22 Oct 2018 | Modified: 22 Oct 2018

Description of Problem

Multiple vulnerabilities have been identified in the management interface of
Citrix NetScaler SD-WAN physical appliances and virtual appliances.
Collectively these vulnerabilities could allow an unauthenticated attacker with
access to the management interface to compromise the host. The vulnerabilities
have been assigned the following CVE numbers.

CVE-2018-17444 - Directory traversal in Citrix SD-WAN 10.1.0 and NetScaler
SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4.

CVE-2018-17445 - Command Injection in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN
9.3.x before 9.3.6 and 10.0.x before 10.0.4.

CVE-2018-17446 - SQL Injection in in Citrix SD-WAN 10.1.0 and NetScaler SD-WAN
9.3.x before 9.3.6 and 10.0.x before 10.0.4.

CVE-2018-17447 - Information exposure through log files in Citrix SD-WAN 10.1.0
and NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4.

CVE-2018-17448 - Incorrect Access Controls in Citrix SD-WAN 10.1.0 and
NetScaler SD-WAN 9.3.x before 9.3.6 and 10.0.x before 10.0.4.

CVE-2012-2104 - Munin Remote Command Injection Vulnerability.

CVE-2016-4793 - The clientIp function in CakePHP 3.2.4 and earlier allows
remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Citrix NetScaler SD-WAN WAN Optimization Edition is not affected.

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Mitigating Factors

In order to protect against these vulnerabilities and web application related
issues, Citrix recommends access to the management interface of the appliance
be restricted. In situations where customers have deployed their appliances in
line with industry best practice, network access to this interface should
already be restricted.

Security Best Practices:

9.3.x - https://docs.citrix.com/en-us/netscaler-sd-wan/9-3/

10.x - https://docs.citrix.com/en-us/netscaler-sd-wan/10/best-practices/

White listing connections by IP address under: Configuration -> Appliance
Settings -> Network Adapters -> IP Address -> Management Interface Whitelist.
This feature can be used to ensure only known networks or hosts can connect to
the SDWAN management interface.

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What Customers Should Do

These vulnerabilities have been addressed in the following software versions:

o NetScaler SD-WAN 9.3.6

o NetScaler SD-WAN 10.0.4*

o Citrix  SD-WAN 10.1.1

Citrix strongly recommends that customers using vulnerable combinations of
hardware and software upgrade their appliances to the new version or later as
soon as possible.

The new software versions will be available on the Citrix website. Information
on the available versions can be found at the following location:


In line with general best practice, Citrix also recommends that customers limit
access to the management interfaces of the NetScaler SD-WAN appliances to
trusted network traffic only.

* CVE-2016-4793 mitigations are not included in 10.0.4 release but will be
addressed in a future release. The interim mitigation for this issue is
limiting access to the management interface of the NetScaler SD-WAN appliance
to trusted network traffic only.

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Citrix thanks  Denis Kolegov, Nikita Oleksov, Nikolay Tkachenko, Oleg
Broslavsky, Sergey Gordeychik of www.scada.sl for working with us to protect
Citrix customers.

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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/.

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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  https://www.citrix.com/support/open-a-support-case.html.

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Reporting Security Vulnerabilities

Citrix welcomes input regarding the security of its products and considers any
and all potential vulnerabilities seriously. For guidance on how to report
security-related issues to Citrix, please see the following document: CTX081743
- - Reporting Security Issues to Citrix

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|Date                          |Change                                        |
|October 22nd 2018             |Initial bulletin published                    |

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