CVE-2019-3754 : Exploit Details and Defense Strategies
Learn about CVE-2019-3754 affecting Dell EMC Unity, UnityVSA, and VNXe3200 Operating Environments. Find out how attackers exploit the XSS vulnerability and steps to mitigate the risk.
Dell EMC Unity Operating Environment, UnityVSA Operating Environment, and VNXe3200 Operating Environment versions prior to specified versions are vulnerable to reflected cross-site scripting.
Understanding CVE-2019-3754
This CVE involves a security flaw in the cas/logout page of Dell EMC Unity, UnityVSA, and VNXe3200 Operating Environments that allows for reflected cross-site scripting attacks.
What is CVE-2019-3754?
Versions of Dell EMC Unity Operating Environment, UnityVSA, and VNXe3200 Operating Environment prior to specific versions contain a security flaw that enables attackers to execute malicious code through the web browser.
The Impact of CVE-2019-3754
The vulnerability allows unauthenticated attackers to deceive users into providing malicious HTML or JavaScript code, which is then executed by the victim's web browser, potentially leading to unauthorized actions.
Technical Details of CVE-2019-3754
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw in the cas/logout page of the affected Dell EMC Operating Environments permits reflected cross-site scripting attacks.
Affected Systems and Versions
- Dell EMC Unity Operating Environment versions prior to 5.0.0.0.5.116
- Dell EMC UnityVSA Operating Environment versions prior to 5.0.0.0.5.116
- Dell EMC VNXe3200 Operating Environment versions prior to 3.1.10.9946299
Exploitation Mechanism
Attackers can exploit this vulnerability by tricking users into inputting malicious code, which is then reflected back and executed by the victim's web browser.
Mitigation and Prevention
Protect your systems from CVE-2019-3754 with the following steps:
Immediate Steps to Take
- Apply security patches provided by Dell EMC promptly.
- Educate users about the risks of executing unknown code.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Implement web application firewalls to detect and block malicious code.
Patching and Updates
Ensure that your Dell EMC Unity, UnityVSA, and VNXe3200 Operating Environments are updated to versions that address the CVE-2019-3754 vulnerability.