Citrix ADC and Citrix Gateway Security Bulletin for CVE-2022-27518

A vulnerability has been discovered in Citrix Gateway and Citrix ADC, listed below, that, if exploited, could allow an unauthenticated remote attacker to perform arbitrary code execution on the appliance.

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

• Citrix ADC and Citrix Gateway 13.0 before 13.0-58.32

• Citrix ADC andCitrixGateway12.1before12.1-65.25

• Citrix ADC 12.1-FIPS before 12.1-55.291

• Citrix ADC 12.1-NDcPP before 12.1-55.291

Citrix ADC and Citrix Gateway version 13.1 is unaffected.

Customers can determine if their Citrix ADC or Citrix Gateway is configured as a SAML SP or a SAML IdP by inspecting the ns.conf file for the following commands:

• add authentication samlAction
  

- Appliance is configured as a SAML SP

OR

• add authentication samlIdPProfile
  

- Appliance is configured as a SAML IdP

If either of the commands are present in the ns.conf file and if the version is an affected version, then the appliance must be updated.

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

Citrix has also published a related blog at <https://www.citrix.com/blogs/2022/12/13/critical-security-update-now-available-for-citrix-adc-citrix-gateway/&gt; , which contains further context.