QID 376085

Date Published: 2021-11-17

QID 376085: Citrix ADC and Citrix Gateway Unauthenticated Denial of Service (DoS) Vulnerability (CTX330728)

Citrix NetScaler Gateway provides secure access control management solution.

Citrix ADC provides proven L4-7 load balancing and global server load balancing (GSLB) to ensure the best application performance and reliability.
Unauthenticated Denial of Service(DoS) has been identified in Citrix Application Delivery Controller (ADC) formerly known as NetScaler ADC and Citrix Gateway formerly known as NetScaler Gateway.

Affected Versions:
Citrix ADC and Citrix Gateway 13.1 before 13.1-4.43
Citrix ADC and Citrix Gateway 13.0 before 13.0-83.27
Citrix ADC and Citrix Gateway 12.1 before 12.1-63.22

QID Detection Logic(Authenticated):
This QID checks for vulnerable versions of Citrix ADC/Netscaler.
NOTE:Access to NSIP or SNIP with management interface access
NOTE:Appliance must be configured as a VPN (Gateway) or AAA virtual server

Successful exploitation of this vulnerability may lead to Unauthenticated Denial of Service(DoS) or Temporary disruption of the Management GUI, Nitro API and RPC communication

  • CVSS V3 rated as Critical - 8.1 severity.
  • CVSS V2 rated as Medium - 5.8 severity.
    • Solution

    Customers are advised to refer to CTX330728 for information pertaining to remediating this vulnerability.

    Vendor References

    CVEs related to QID 376085

    CVE-2021-22955 | CVE-2021-22956 |
    Software Advisories
    Advisory ID Software Component Link
    CTX330728 URL Logo support.citrix.com/article/CTX330728
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].