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

Threat alert details

We would like to bring your attention to a recent security bulletin surrounding Citrix Gateway and Citrix ADC. Vulnerabilities have been discovered in Citrix Gateway and Citrix ADC, listed below. Note that only appliances that are operating as a Gateway (appliances using the SSL VPN functionality or deployed as an ICA proxy with authentication enabled) are affected by the first issue, which is rated as a Critical severity vulnerability.

CVE

Description

Affected Products

Pre-conditions

CVE-2022-27510

Unauthorized access to Gateway user capabilities

Citrix Gateway, Citrix ADC

Appliance must be configured as a VPN (Gateway).

​CVE-2022-27513

Remote desktop takeover via phishing

​Citrix Gateway, Citrix ADC

​Appliance must be configured as a

  • VPN (Gateway)

and the RDP proxy functionality must be configured.

CVE-2022-27516

User login brute force protection functionality bypass

​Citrix Gateway, Citrix ADC

Appliance must be configured as a

  • VPN (Gateway)

OR

  • AAA virtual server

and the user lockout functionality “Max Login Attempts” must be configured

Affected Products

The following versions of Citrix ADC and Citrix Gateway are affected

  • 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

Remediation

Affected customers of Citrix ADC and Citrix Gateway are recommended to install the relevant updated versions of Citrix ADC or Citrix Gateway as soon as possible:

  • Citrix ADC and Citrix Gateway 13.1-33.47 and later releases
  • Citrix ADC and Citrix Gateway 13.0-88.12 and later releases of 13.0
  • Citrix ADC and Citrix Gateway 12.1-65.21 and later releases of 12.1
  • Citrix ADC 12.1-FIPS 12.1-55.289 and later releases of 12.1-FIPS
  • Citrix ADC 12.1-NDcPP 12.1-55.289 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.

References

https://support.citrix.com/article/CTX463706/citrix-gateway-and-citrix-adc-security-bulletin-for-cve202227510-cve202227513-and-cve202227516

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