Detections
Analytics

Citrix ADC and Citrix NetScaler Gateway Multiple Vulnerabilities (CTX330728)

high Nessus Plugin ID 155584

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Synopsis

The remote device is affected by multiple vulnerabilities.

Description

The remote Citrix ADC or Citrix NetScaler Gateway device is version 11.1.x prior to 11.1-65.23, 12.1.x prior to 12.1-63.22, 12.1-FIPS prior to 12.1-55.257, 13.0.x prior to 13.0-83.27, or 13.1.x prior to 13.1-4.43.
It is, therefore, affected by multiple vulnerabilities:

 - Unauthenticated denial of service (CVE-2021-22955)

 - Temporary disruption of the Management GUI, Nitro API and RPC communication (CVE-2021-22956)

Please refer to advisory CTX330728 for more information.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

For versions 11.1.x, 12.1.x, 12.1-FIPS, 13.0.x, and 13.1.x, upgrade to 11.1-65.23, 12.1-55.257-FIPS, 12.1-63.22, 13.0-83.27, and 13.1-4.43, or later, respectively.

See Also

https://support.citrix.com/article/CTX330728

Plugin Details

Severity: High

ID: 155584

File Name: citrix_netscaler_CTX330728.nasl

Version: 1.5

Type: combined

Family: CGI abuses

Published: 11/18/2021

Updated: 2/12/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-22956

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/h:citrix:netscaler_gateway, cpe:/h:citrix:netscaler_application_delivery_controller

Required KB Items: Host/NetScaler/Detected

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2021

Vulnerability Publication Date: 11/9/2021

Reference Information

CVE: CVE-2021-22955, CVE-2021-22956

IAVA: 2021-A-0553