Citrix has released security updates to address the CVE-2019-19781 vulnerability in Citrix SD-WAN WANOP. An attacker could exploit this vulnerability to take control of an affected system. Citrix has also released an Indicators of Compromise Scanner that aims to identify evidence of successful exploitation of CVE-2019-19781.
The Cybersecurity and Infrastructure Security Agency (CISA) strongly recommends users and administrators review the Citrix Security Bulletin CTX267027 and apply the necessary updates. CISA also recommends users and administrators:
- Run the Indicators of Compromise Scanner;
- Review the Citrix article on CVE-2019-19781: Fixes now available for Citrix SD-WAN WANOP, published January 23, 2020; and
- Review CISA’s Activity Alert on Critical Vulnerability in Citrix Application Delivery Controller, Gateway, and SD-WAN WANOP.