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AUSCERT External Security Bulletin Redistribution
ESB-2019.2547
Citrix SD-WAN Multiple Security Updates
11 July 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Citrix SD-WAN Center
Citrix SD-WAN Appliance
Publisher: Citrix
Operating System: Network Appliance
Impact/Access: Root Compromise -- Remote/Unauthenticated
Create Arbitrary Files -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12992 CVE-2019-12991 CVE-2019-12990
CVE-2019-12989 CVE-2019-12988 CVE-2019-12987
CVE-2019-12986 CVE-2019-12985
Original Bulletin:
https://support.citrix.com/article/CTX251987
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Citrix SD-WAN Multiple Security Updates
Reference: CTX251987
Category : Critical
Created : 10 Jul 2019
Modified : 10 Jul 2019
Applicable Products
o Citrix SD-WAN
Description of Problem
Multiple vulnerabilities have been identified in the management console of the
Citrix SD-WAN Center and NetScaler SD-WAN Center. Multiple Vulnerabilities have
also been identified on the Citrix SD-WAN Appliance and NetScaler SD-WAN
Appliance. Collectively, these vulnerabilities could result in an
unauthenticated attacker executing commands as root against the SD-WAN Center
management console, or potentially be used to gain root privileges on the
SD-WAN appliance. The vulnerabilities have been assigned the following CVE
numbers.
CVE-2019-12985 - Unauthenticated Command Injection in Citrix SD-WAN Center
10.2.x before 10.2.3 and NetScaler SD-WAN Center 10.0.x before 10.0.8.
CVE-2019-12986 - Unauthenticated Command Injection in Citrix SD-WAN Center
10.2.x before 10.2.3 and NetScaler SD-WAN Center 10.0.x before 10.0.8.
CVE-2019-12987 - Unauthenticated Command Injection in Citrix SD-WAN Center
10.2.x before 10.2.3 and NetScaler SD-WAN Center 10.0.x before 10.0.8.
CVE-2019-12988 - Unauthenticated Command Injection in Citrix SD-WAN Center
10.2.x before 10.2.3 and NetScaler SD-WAN Center 10.0.x before 10.0.8.
CVE-2019-12990 - Unauthenticated Directory Traversal File Write in Citrix
SD-WAN Center 10.2.x before 10.2.3 and NetScaler SD-WAN Center 10.0.x before
10.0.8.
CVE-2019-12992 - Authenticated Command Injection in Citrix SD-WAN Center 10.2.x
before 10.2.3 and NetScaler SD-WAN Center 10.0.x before 10.0.8.
CVE-2019-12989 - Unauthenticated SQL Injection in Citrix SD-WAN Appliance
10.2.x before 10.2.3 and NetScaler SD-WAN Appliance 10.0.x before 10.0.8.
CVE-2019-12991 - Authenticated Command Injection in Citrix SD-WAN Appliance
10.2.x before 10.2.3 and NetScaler SD-WAN Appliance 10.0.x before 10.0.8.
Affected Versions for Citrix SD-WAN Center and Citrix SD-WAN Appliance:
o All versions of NetScaler SD-WAN 9.x *
o All versions of NetScaler SD-WAN 10.0.x earlier than 10.0.8
o All versions of Citrix SD-WAN 10.1.x *
o All versions of Citrix SD-WAN 10.2.x earlier than 10.2.3
* Upgrade to 10.0.8 or 10.2.3 for security update
Mitigating Factors
In order to protect against these vulnerabilities and web application related
issues, Citrix recommends access to the management console be restricted. In
situations where customers have deployed their management console in line with
industry best practice, network access to this interface should already be
restricted.
Security Best Practices:
10.x - https://docs.citrix.com/en-us/netscaler-sd-wan/10/best-practices/
security-best-practices.html
What Customers Should Do
These vulnerabilities have been addressed in the following software versions:
o NetScaler SD-WAN Center 10.0.8 and NetScaler SD-WAN 10.0.8 Appliance
o Citrix SD-WAN Center 10.2.3 and Citrix SD-WAN 10.2.3 Appliance
Citrix strongly recommends that customers using vulnerable software upgrade
their SD-WAN Center management console or SD-WAN appliance to the new version
or later as soon as possible.
If using a version of SD-WAN that is no longer supported, upgrade to the new
version of the product that includes the security update.
The new software versions will be available on the Citrix website. Information
on the available versions can be found at the following location:
https://www.citrix.com/downloads/netscaler-sd-wan/
In line with general best practice, Citrix also recommends that customers limit
access to the management console of the Citrix SD-WAN Appliance / NetScaler
SD-WAN Appliance to trusted network traffic only.
Acknowledgements
Citrix thanks Chris Lyne at Tenable, Inc. for working with us to protect Citrix
customers.
Changelog
+---------------------------------+-------------------------------------------+
|Date |Change |
+---------------------------------+-------------------------------------------+
|10th July 2019 |Initial Publishing |
+---------------------------------+-------------------------------------------+
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