CVE-2020-8245 : What You Need to Know

Citrix ADC and Citrix Gateway are affected by an HTML Injection vulnerability due to Improper Input Validation.

Understanding CVE-2020-8245

This CVE involves an HTML Injection attack against the SSL VPN web portal of Citrix ADC and Citrix Gateway.

What is CVE-2020-8245?

CWE-79: Cross-site Scripting (XSS) - Generic vulnerability affecting Citrix ADC and Citrix Gateway.

The Impact of CVE-2020-8245

The vulnerability allows attackers to inject malicious HTML code into the SSL VPN web portal, potentially leading to various security risks.

Technical Details of CVE-2020-8245

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Improper Input Validation on various versions of Citrix ADC and Citrix Gateway leads to an HTML Injection attack against the SSL VPN web portal.

Affected Systems and Versions

Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35
Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15
Citrix ADC 12.1-FIPS before 12.1-55.187
Citrix ADC and NetScaler Gateway 12.0
Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12
Citrix SD-WAN WANOP 11.2 before 11.2.1a
Citrix SD-WAN WANOP 11.1 before 11.1.2a
Citrix SD-WAN WANOP 11.0 before 11.0.3f
Citrix SD-WAN WANOP 10.2 before 10.2.7b

Exploitation Mechanism

Attackers exploit the improper input validation to inject malicious HTML code into the SSL VPN web portal, potentially compromising the security of the system.

Mitigation and Prevention

Protect your systems from CVE-2020-8245 with the following measures:

Immediate Steps to Take

Apply the necessary security patches provided by Citrix to address the vulnerability.
Monitor and restrict access to the SSL VPN web portal to prevent unauthorized activities.

Long-Term Security Practices

Regularly update and patch your Citrix ADC and Citrix Gateway systems to mitigate known vulnerabilities.
Implement secure coding practices to prevent input validation issues and potential HTML Injection attacks.

Patching and Updates

Stay informed about security updates and patches released by Citrix for the affected versions to ensure the ongoing security of your systems.