Stored cross-site scripting in Citrix products - CVE-2020-8198

Vulnerability identifier: #VU29590

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

CVE-ID: CVE-2020-8198

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

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

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

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