QID 376084

Date Published: 2021-11-18

QID 376084: Citrix ADC and NetScaler Gateway Temporary disruption of the Management GUI 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 NetScaler Gateway 11.1 before 11.1-65.23

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

CTX330728 - support.citrix.com/article/CTX330728

CVEs related to QID 376084

CVE-2021-22955 | CVE-2021-22956 |

Software Advisories

Advisory ID	Software	Component	Link
CTX330728			support.citrix.com/article/CTX330728

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Array ( [qid] => 376084 [title] => Citrix ADC and NetScaler Gateway Temporary disruption of the Management GUI Vulnerability (CTX330728) [severity] => 4 [description] => Citrix NetScaler Gateway provides secure access control management solution.

Affected Versions:
Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.23

Customers are advised to refer to CTX330728 for information pertaining to remediating this vulnerability. [consequence] => 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

[published] => Yes [date_insert] => 2021-11-16 [date_published] => 2021-11-18 [cve] => Array ( [0] => CVE-2021-22955 [1] => CVE-2021-22956 ) [vendor_refs] => Array ( [0] => Array ( [vendor_ref] => CTX330728 [vendor_ref_url] => https://support.citrix.com/article/CTX330728 ) ) [cvss_v2] => Array ( [basescore] => 5.8 [temporalscore] => 4.3 ) [cvss_v3] => Array ( [basescore] => 8.1 [temporalscore] => 7.1 ) [patches] => Array ( [0] => Array ( [link] => https://support.citrix.com/article/CTX330728 [advisory_id] => CTX330728 [os_sw] => [component] => ) ) )