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, 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, 13.0.x, and 13.1.x, upgrade to 11.1.65.23, 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: 1.4

Type: combined

Family: CGI abuses

Published: 11/18/2021

Updated: 12/9/2021

Risk Information

CVSS Score Source: CVE-2021-22956

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

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: 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