=================================================================== CERT-Renater Note d'Information No. 2022/VULN465 _____________________________________________________________________ DATE : 15/12/2022 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Citrix ADC, Citrix Gateway versions prior to 13.0-58.32,12.1-65.25, Citrix ADC versions prior to 12.1-FIPS 12.1-55.291, 12.1-NDcPP 12.1-55.291. ====================================================================https://support.citrix.com/article/CTX474995/citrix-adc-and-citrix-gateway-security-bulletin-for-cve202227518 _____________________________________________________________________ CTX474995 Citrix ADC and Citrix Gateway Security Bulletin for CVE-2022-27518 Security Bulletin | Critical | Created: 13 Dec 2022 | Modified: 13 Dec 2022 Applicable Products Citrix ADC Citrix Gateway Description of Problem 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. CVE-ID  Description  CWE  Affected Products Pre-conditions CVE-2022-27518 Unauthenticated remote arbitrary code execution CWE-664: Improper Control of a Resource Through its Lifetime Citrix Gateway, Citrix ADC Citrix ADC or Citrix Gateway must be configured as a SAML SP or a SAML IdP 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 and Citrix Gateway 12.1 before 12.1-65.25 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/ , which contains further context. What Customers Should Do Exploits of this issue on unmitigated appliances in the wild have been reported. Citrix strongly urges affected customers of Citrix ADC and Citrix Gateway to install the relevant updated versions of Citrix ADC or Citrix Gateway as soon as possible: Citrix ADC and Citrix Gateway 13.0-58.32 and later releases Citrix ADC and Citrix Gateway 12.1-65.25 and later releases of 12.1 Citrix ADC 12.1-FIPS 12.1-55.291 and later releases of 12.1-FIPS  Citrix ADC 12.1-NDcPP 12.1-55.291 and later releases of 12.1-NDcPP Please note that Citrix ADC and Citrix Gateway versions prior to 12.1 are EOL and customers on those versions are recommended to upgrade to one of the supported versions. 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/ , which contains further context What Citrix is Doing Citrix is notifying customers and channel partners about this potential security issue through the publication of this security bulletin on the Citrix Knowledge Center at https://support.citrix.com/securitybulletins. Obtaining Support on This Issue If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at https://www.citrix.com/support/open-a-support-case. Subscribe to Receive Alerts Citrix strongly recommends that all customers subscribe to receive alerts when a Citrix security bulletin is created or modified at https://support.citrix.com/user/alerts. Reporting Security Vulnerabilities to Citrix Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. For details on our vulnerability response process and guidance on how to report security-related issues to Citrix, please see the following webpage: https://www.citrix.com/about/trust-center/vulnerability-process.html. Disclaimer This document is provided on an "as is" basis and does not imply any kind of guarantee or warranty, including the warranties of merchantability or fitness for a particular use. Your use of the information on the document is at your own risk. Citrix reserves the right to change or update this document at any time. Customers are therefore recommended to always view the latest version of this document directly from the Citrix Knowledge Center. Changelog Date Change 2022-12-13 Initial Publication 2022-12-13 Minor font changes 2022-12-13 Enabling email notifications 2022-12-13 Added a link to the Citrix blog post which contains further context ========================================================+ CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =======================================================