Citrix Gateway and Citrix ADC Security Bulletin for CVE-2022-27510 CVE-2022-27513 and CVE-2022-27516

Vulnerabilities have been discovered in Citrix Gateway and Citrix ADC, listed below. Note that only appliances that are operating as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) are affected by the first issue, which is rated as a Critical severity vulnerability.

CVE-ID

Description

CWE

Affected Products

Pre-conditions

CVE-2022-27510

Unauthorized access to Gateway user capabilities

CWE-288: Authentication Bypass Using an Alternate Path or Channel

Citrix Gateway, Citrix ADC

Appliance must be configured as a

  • Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy)

CVE-2022-27513

Remote desktop takeover via phishing

CWE-345: Insufficient Verification of Data Authenticity

Citrix Gateway, Citrix ADC

Appliance must be configured as a

  • Gateway (RDP Proxy)

and the RDP proxy functionality must be configured

CVE-2022-27516

User login brute force protection functionality bypass

CWE-693: Protection Mechanism Failure

Citrix Gateway, Citrix ADC

Appliance must be configured as a

  • Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy)

OR

  • AAA virtual server

and the user lockout functionality “Max Login Attempts” must be configured for either Gateway or AAA virtual server

The following supported versions of Citrix ADC and Citrix Gateway are affected by this vulnerability:

  • Citrix ADC and Citrix Gateway 13.1 before 13.1-33.47

  • Citrix ADC and Citrix Gateway 13.0 before 13.0-88.12

  • Citrix ADC and Citrix Gateway 12.1 before 12.1.65.21

  • Citrix ADC 12.1-FIPS before 12.1-55.289

  • Citrix ADC 12.1-NDcPP before 12.1-55.289

This bulletin only applies to customer-managed Citrix ADC and Citrix Gateway appliances. Customers using Citrix-managed cloud services do not need to take any action.

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