CVE-2019-3769 : Exploit Details and Defense Strategies

Dell Wyse Management Suite versions prior to 1.4.1 contain a stored cross-site scripting vulnerability that could be exploited by a remote authenticated malicious user with limited privileges. This vulnerability allows the attacker to inject and execute malicious code within the vulnerable application.

Understanding CVE-2019-3769

This CVE involves a stored cross-site scripting vulnerability in Dell Wyse Management Suite versions earlier than 1.4.1.

What is CVE-2019-3769?

A stored cross-site scripting vulnerability in Dell Wyse Management Suite versions before 1.4.1
Exploitable by a remote authenticated malicious user with limited privileges
Allows injection of harmful payloads in the device's heartbeat request
Execution of malicious code by victim users' web browsers

The Impact of CVE-2019-3769

This vulnerability has a CVSS base score of 6.4, categorizing it as a medium severity issue. The impact includes:

Low confidentiality and integrity impact
Low privileges required for exploitation
Changed scope after exploitation
No user interaction required
Network-based attack complexity
No availability impact

Technical Details of CVE-2019-3769

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows a remote authenticated attacker to store malicious code in the device's heartbeat request, leading to the execution of the code within the vulnerable application.

Affected Systems and Versions

Product: Wyse Management Suite
Vendor: Dell
Versions Affected: All versions prior to 1.4.1

Exploitation Mechanism

Attacker with limited privileges injects malicious payload in the device's heartbeat request
Victim users unknowingly execute the injected code through their web browsers

Mitigation and Prevention

Protecting systems from CVE-2019-3769 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Dell Wyse Management Suite to version 1.4.1 or later
Monitor and restrict access to vulnerable components
Educate users on safe browsing practices

Long-Term Security Practices

Regular security training for employees
Implement web application firewalls
Conduct regular security audits and assessments

Patching and Updates

Apply security patches and updates promptly
Stay informed about security advisories and best practices