Citrix SD-WAN CVE-2020-6175 Information Disclosure Vulnerability

Description

Citrix SD-WAN Appliance is prone to an information-disclosure vulnerability. Attackers can exploit this issue to obtain sensitive information that may aid in further attacks. The following products and versions are vulnerable: NetScaler SD-WAN 10.0.x and prior Citrix SD-WAN 10.1.x are vulnerable Citrix SD-WAN 10.2.x versions prior to 10.2.6 Citrix SD-WAN 11.0.x versions prior to 11.0.3

Technologies Affected

• Citrix NetScaler SD-WAN 10.0.1
• Citrix NetScaler SD-WAN 10.0.2
• Citrix NetScaler SD-WAN 10.0.3
• Citrix NetScaler SD-WAN 10.0.4
• Citrix NetScaler SD-WAN 10.0.5
• Citrix NetScaler SD-WAN 10.0.6
• Citrix NetScaler SD-WAN 10.0.7
• Citrix NetScaler SD-WAN 10.0.8
• Citrix SD-WAN 10.1.0
• Citrix SD-WAN 10.1.1
• Citrix SD-WAN 10.1.2
• Citrix SD-WAN 10.2.0
• Citrix SD-WAN 10.2.1
• Citrix SD-WAN 10.2.2
• Citrix SD-WAN 10.2.3
• Citrix SD-WAN 10.2.4
• Citrix SD-WAN 10.2.5
• Citrix SD-WAN 11.0.0
• Citrix SD-WAN 11.0.1
• Citrix SD-WAN 11.0.2

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.