Citrix ADC and Citrix NetScaler Gateway Multiple Vulnerabilities (CTX297155)

medium Nessus Plugin ID 150866


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The remote device is affected by multiple vulnerabilities.


The remote Citrix ADC or Citrix NetScaler Gateway device is version 11.1.x prior to, 12.1.x prior to or 13.0.x prior to It is, therefore, affected by multiple vulnerabilities:

- Network-based denial-of-service from within the same Layer 2 network segment (CVE-2020-8299)

- SAML authentication hijack through a phishing attack to steal a valid user session (CVE-2020-8300)

Please refer to advisory CTX297155 for more information.

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


For versions 11.1.x, 12.1.x and 13.0.x, upgrade to, and, or later, respectively.

See Also

Plugin Details

Severity: Medium

ID: 150866

File Name: citrix_netscaler_CTX297155.nasl

Version: 1.4

Type: combined

Family: CGI abuses

Published: 6/18/2021

Updated: 8/17/2021

Dependencies: citrix_netscaler_detect.nbin

Risk Information

CVSS Score Source: CVE-2020-8300


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

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


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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: 6/8/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2020-8299, CVE-2020-8300

IAVA: 2021-A-0288

CWE: 284, 400