CVE-2020-8198 : Security Advisory and Response

Citrix ADC, Citrix Gateway, and Citrix SDWAN WAN-OP are affected by an improper input validation vulnerability leading to Stored Cross-Site Scripting (XSS).

Understanding CVE-2020-8198

This CVE involves an input validation issue in Citrix products, potentially allowing attackers to execute malicious scripts.

What is CVE-2020-8198?

The vulnerability in Citrix ADC, Citrix Gateway, and Citrix SDWAN WAN-OP versions before specific releases can be exploited for Stored Cross-Site Scripting attacks.

The Impact of CVE-2020-8198

The vulnerability could enable attackers to inject and execute malicious scripts in the context of a user's session, leading to unauthorized actions or data theft.

Technical Details of CVE-2020-8198

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The flaw arises from improper input validation in Citrix ADC, Citrix Gateway, and Citrix SDWAN WAN-OP versions, allowing for Stored Cross-Site Scripting attacks.

Affected Systems and Versions

Products: Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP
Vulnerable Versions: Citrix ADC and Citrix Gateway 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14, 10.5-70.18, Citrix SDWAN WAN-OP 11.1.1a, 11.0.3d, 10.2.7

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the affected Citrix products, potentially compromising user sessions.

Mitigation and Prevention

Protecting systems from CVE-2020-8198 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply security patches provided by Citrix promptly.
Monitor and restrict user input to prevent script injection.
Implement web application firewalls to filter and block malicious traffic.

Long-Term Security Practices

Regularly update and patch Citrix products to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.
Educate users and administrators on secure coding practices and the risks of XSS attacks.

Patching and Updates

Citrix has released patches to address the vulnerability. Ensure all affected systems are updated to the latest secure versions.