CVE-2019-5594 : Exploit Details and Defense Strategies

A potential vulnerability has been identified in Fortinet FortiNAC versions 8.3.0 to 8.3.6 and 8.5.0 admin webUI, allowing for a Cross-site Scripting (XSS) attack.

Understanding CVE-2019-5594

This CVE involves an improper neutralization of input during web page generation in Fortinet FortiNAC versions 8.3.0 to 8.3.6 and 8.5.0 admin webUI, potentially leading to a reflected XSS attack.

What is CVE-2019-5594?

Vulnerability Type: Cross-site Scripting (XSS)
CVSS Score: Not provided

The Impact of CVE-2019-5594

The vulnerability could allow an unauthenticated attacker to execute unauthorized code or commands through a reflected XSS attack using the search field in the webUI.

Technical Details of CVE-2019-5594

Vulnerability Description

The flaw lies in the lack of proper neutralization of input during web page generation.

Affected Systems and Versions

Product: Fortinet FortiNAC
Versions: 8.3.0 to 8.3.6 and 8.5.0

Exploitation Mechanism

An attacker, not authenticated, can exploit the vulnerability by using the search field in the webUI to perform a reflected XSS attack.

Mitigation and Prevention

Immediate Steps to Take

Fortinet recommends applying the necessary patches provided by the vendor.
Monitor for any unusual activities in the webUI.

Long-Term Security Practices

Regularly update and patch the FortiNAC software to the latest version.
Educate users on safe browsing practices to prevent XSS attacks.
Implement network security measures to detect and block malicious activities.
Conduct regular security audits and assessments.
Stay informed about security advisories and updates from Fortinet.

Patching and Updates

Fortinet has released patches to address the vulnerability in FortiNAC versions 8.3.0 to 8.3.6 and 8.5.0.
Ensure timely application of these patches to secure the system.