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             AUSCERT External Security Bulletin Redistribution

                    Citrix SDWAN Center Security Update
                             13 November 2020


        AusCERT Security Bulletin Summary

Product:           Citrix SD-WAN Center
Publisher:         Citrix
Operating System:  Network Appliance
Impact/Access:     Root Compromise                 -- Remote/Unauthenticated
                   Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Unauthorised Access             -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-8273 CVE-2020-8272 CVE-2020-8271

Original Bulletin: 

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Citrix SDWAN Center Security Update

Reference: CTX285061

Category : Critical

Created  : 10 Nov 2020

Modified : 10 Nov 2020

Applicable Products

  o Citrix SD-WAN

Description of Problem

Multiple vulnerabilities have been discovered in Citrix SD-WAN Center that, if
exploited, could allow an unauthenticated attacker with network
access to SD-WAN Center to perform arbitrary code execution as root.

These vulnerabilities have the following identifiers:

|CVE          |Description            |Vulnerability Type    |Pre-conditions    |
|             |                       |                      |An attacker must  |
|             |Unauthenticated remote |                      |be able to        |
|CVE-2020-8271|code execution with    |CWE-23: Path Traversal|communicate with  |
|             |root privileges        |                      |SD-WAN Center's   |
|             |                       |                      |Management IP/FQDN|
|             |                       |                      |An attacker must  |
|             |Authentication         |                      |be able to        |
|CVE-2020-8272|Bypass resulting in    |CWE-287: Improper     |communicate       |
|             |exposure               |Authentication        |with SD-WAN       |
|             |of SD-WAN functionality|                      |Center's          |
|             |                       |                      |Management IP/FQDN|
|             |                       |CWE-78: Improper      |The attacker must |
|             |Privilege escalation   |Neutralization of     |be an             |
|CVE-2020-8273|of an authenticated    |Special Elements used |authenticated user|
|             |user to root           |in an OS Command ('OS |on SD-WAN Center  |
|             |                       |Command Injection')   |                  |

The following supported versions of Citrix SD-WAN Center are affected by these issues:

  o CitrixSD-WAN11.2 before11.2.2
  o CitrixSD-WAN11.1 before 11.1.2b
  o CitrixSD-WAN10.2 before 10.2.8

Other versions are now End of Life and no longer supported.

Mitigating Factors

Citrix SD-WAN Center is an internal management platform for Citrix SD-WAN and access
to Citrix SD-WAN Center is likely to be restricted.

What Customers Should Do

The issues have been addressed in the following versions of Citrix SD-WAN Center:

  o Citrix SD-WAN 11.2.2 and later versions of Citrix SD-WAN 11.2
  o Citrix SD-WAN 11.1.2b and later versions of Citrix SD-WAN 11.1
  o Citrix SD-WAN 10.2.8 and later versions of Citrix SD-WAN 10.2

Affected customers are strongly recommended to immediately update their

The latest versions of Citrix SD-WAN Cente rare available at: https://www.citrix.com/


Citrix would like to thank Ariel Tempelhof of RealmodeLabs for working with us to
protect Citrix customers.


|Date                      |Change                                            |
|2020-11-10                |Initial Publication                               |

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