CVE-2020-3356 Explained : Impact and Mitigation

A vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack.

Understanding CVE-2020-3356

This CVE involves a stored cross-site scripting vulnerability in Cisco Data Center Network Manager.

What is CVE-2020-3356?

The vulnerability in Cisco DCNM allows attackers to execute arbitrary script code or access sensitive information through the web-based management interface.

The Impact of CVE-2020-3356

CVSS Base Score: 6.1 (Medium Severity)
Attack Vector: Network
Attack Complexity: Low
User Interaction: Required
Scope: Changed
Confidentiality and Integrity Impact: Low
Privileges Required: None
Availability Impact: None

Technical Details of CVE-2020-3356

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability is a result of insufficient input validation in the web-based management interface of Cisco DCNM, enabling attackers to inject malicious content.

Affected Systems and Versions

Affected Product: Cisco Data Center Network Manager
Affected Version: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious content into a log file through the interface.

Mitigation and Prevention

Protect your systems from CVE-2020-3356 with the following steps:

Immediate Steps to Take

Implement security patches provided by Cisco
Monitor network traffic for any signs of exploitation
Restrict access to the management interface

Long-Term Security Practices

Regularly update and patch all software and systems
Conduct security training for employees to recognize and report suspicious activities

Patching and Updates

Apply the latest security updates and patches released by Cisco to address this vulnerability.