CVE-2020-3491 Explained : Impact and Mitigation

A vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker with administrative privileges to conduct a cross-site scripting (XSS) attack.

Understanding CVE-2020-3491

This CVE involves a stored cross-site scripting vulnerability in Cisco Vision Dynamic Signage Director.

What is CVE-2020-3491?

The vulnerability allows an authenticated attacker with administrative privileges to execute a cross-site scripting attack by inserting malicious data into a specific field in the web-based management interface.

The Impact of CVE-2020-3491

The vulnerability could lead to the execution of arbitrary script code in the interface or access to sensitive browser-based information.

Technical Details of CVE-2020-3491

This section provides technical details of the vulnerability.

Vulnerability Description

The flaw arises from the lack of proper validation of user-supplied input in the web-based management interface.

Affected Systems and Versions

Product: Cisco Vision Dynamic Signage Director
Vendor: Cisco
Affected Version: n/a

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
User Interaction: None
Scope: Changed
CVSS Score: 5.5 (Medium)
Vector String: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Mitigation and Prevention

Steps to address and prevent the vulnerability.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Restrict access to the web-based management interface.
Monitor for any unusual activities.

Long-Term Security Practices

Regularly update and patch software.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Check for security advisories from Cisco.
Implement recommended security configurations.