CVE-2022-27518: Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability

CVE-2022-27518 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-12-13

Citrix ADC and Gateway, when configured as a SAML Service Provider or Identity Provider, contain an authentication bypass vulnerability. An unauthenticated remote attacker can exploit this to achieve arbitrary code execution with administrator privileges.

Technologies: Citrix Application Delivery Controller (ADC), Citrix Gateway. Vendors: Citrix.

Quick answers

Is CVE-2022-27518 exploited in the wild?
Yes. CVE-2022-27518 is known to be exploited in the wild, first recorded on 13 December 2022. Treat it as urgent.
How severe is CVE-2022-27518?
Critical severity, with a CVSS score of 9.8, published 13 December 2022.
Which products and versions are affected?
Citrix Application Delivery Controller (ADC) Firmware 12.1 (including) up to 12.1-65.25 (excluding); 13.0 (including) up to 13.0-58.32 (excluding); Citrix Gateway Firmware 12.1 (including) up to 12.1-65.25 (excluding); 13.0 (including) up to 13.0-58.32 (excluding).
Is there a fix for CVE-2022-27518?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2022-27518 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2022-27518?
Check whether you run Citrix Application Delivery Controller (ADC), Citrix Gateway or Citrix NetScaler Gateway. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Citrix Application Delivery Controller (ADC) Firmware 12.1 (including) up to 12.1-65.25 (excluding); 13.0 (including) up to 13.0-58.32 (excluding)
  • Citrix Gateway Firmware 12.1 (including) up to 12.1-65.25 (excluding); 13.0 (including) up to 13.0-58.32 (excluding)

Timeline

  • 2022-12-13: disclosed
  • 2022-12-13: advisory: Vendor advisory CTX474995 published
  • 2022-12-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-12-13: exploited: Reported as exploited in the wild at time of disclosure

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