Overview
Recently, NSFOCUS CERT detected that Citrix released a security notice, fixing an authentication bypass vulnerability (CVE-2022-27510). When Citrix Gateway is running with Citrix ADC as a gateway device (either using the SSL VPN feature or deployed as an ICA proxy with authentication enabled), an unauthenticated remote attacker can send malicious packets to the target device, resulting in authentication bypass access to background services. The CVSS score is 9.8, relevant users are requested to take protective measures.
Citrix Gateway, the best secure remote access solution for Citrix Workspace, offers countless unique integrations that enhance security and user experience. Citrix ADC is the most comprehensive function and load balancing solution for virtualized advanced Web and application, and remote access services.
Reference link:
Scope of Impact
Affected version
- Citrix ADC and Citrix Gateway 13.1 < 13.1-33.47
- Citrix ADC and Citrix Gateway 13.0 < 13.0-88.12
- Citrix ADC and Citrix Gateway 12.1 < 12.1.65.21
- Citrix ADC 12.1-FIPS < 12.1-55.289
- Citrix ADC 12.1-NDcPP < 12.1-55.289
Unaffected version
- Citrix ADC/Citrix Gateway 13.1 >= 13.1-33.47
- Citrix ADC/Citrix Gateway 13.0 >= 13.0-88.12
- Citrix ADC/Citrix Gateway 12.1 >= 12.1.65.21
- Citrix ADC 12.1-FIPS >= 12.1-55.289
- Citrix ADC 12.1-NDcPP >= 12.1-55.289
Vulnerability Mitigation
The official security version has been released to fix this vulnerability. It is recommended that affected users upgrade their protection in time:
https://www.citrix.com/downloads/citrix-adc/
https://www.citrix.com/downloads/citrix-gateway/
Statement
This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.
About NSFOCUS
NSFOCUS, Inc., a global network and cyber security leader, protects enterprises and carriers from advanced cyber attacks. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide multi-layered, unified and dynamic protection against advanced cyber attacks.
NSFOCUS works with Fortune Global 500 companies, including four of the world’s five largest financial institutions, organizations in insurance, retail, healthcare, critical infrastructure industries as well as government agencies. NSFOCUS has technology and channel partners in more than 60 countries, is a member of both the Microsoft Active Protections Program (MAPP), and the Cloud Security Alliance (CSA).
A wholly owned subsidiary of NSFOCUS Technologies Group Co., Ltd., the company has operations in the Americas, Europe, the Middle East and Asia Pacific.
