Information disclosure in Citrix products - CVE-2020-8196

Vulnerability identifier: #VU29588

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-8196

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote user on the NSIP can gain unauthorized access to sensitive information on the system.

Citrix NetScaler Gateway
SD-WAN 5100 WANOP
SD-WAN 5000 WANOP
SD-WAN 4100 WANOP
SD-WAN 4000 WANOP
Citrix Netscaler ADC

Install updates from vendor's website.

Citrix NetScaler Gateway - addressed in versions 10.5.70.18, 11.1.64.14, 12.0.63.21, 12.1.57.18, 13.0.58.30
SD-WAN 5100 WANOP - addressed in versions 10.2.7, 11.0.3d, 11.1.1a
SD-WAN 5000 WANOP - addressed in versions 10.2.7, 11.0.3d, 11.1.1a
SD-WAN 4100 WANOP - addressed in versions 10.2.7, 11.0.3d, 11.1.1a
SD-WAN 4000 WANOP - addressed in versions 10.2.7, 11.0.3d, 11.1.1a
Citrix Netscaler ADC - addressed in versions 10.5 70.18, 11.1 64.14, 12.0 63.21, 12.1-57.18, 13.0-58.30

• Exploit #5650 - Citrix ADC NetScaler - Local File Inclusion (Metasploit) (June 17, 2021)
• Exploit #3101 - CVE-2020-8193-Citrix-Scanner (Scanning for CVE-2020-8193 - Auth Bypass check) (July 15, 2020)
• Exploit #3105 - citrix_adc_netscaler_lfi (This Metasploit-Framework module can be use to help companies to check the last Citrix vulnerability CVE-2020-8193, CVE-2020-8195 and CVE-2020-8196 (disclosed July 08, 2020).) (July 15, 2020)

• https://support.citrix.com/article/CTX276688

• Multiple vulnerabilities in Citrix Application Delivery Controller, Citrix Gateway and Citrix SD-WAN WANOP appliance