CVE-2020-7303 : Security Advisory and Response

A Cross-Site Scripting vulnerability in McAfee Data Loss Prevention (DLP) ePO extension prior to version 11.5.3 allows authenticated remote users to execute scripts in a user's browser by adding a new label.

Understanding CVE-2020-7303

This CVE involves a security issue in the DLP ePO extension by McAfee.

What is CVE-2020-7303?

CVE-2020-7303 is a Cross-Site Scripting vulnerability in McAfee's DLP ePO extension before version 11.5.3, enabling authenticated remote users to run scripts in a user's browser through the addition of a new label.

The Impact of CVE-2020-7303

The vulnerability has a CVSS base score of 4.1, with medium severity. It poses a low risk to confidentiality and integrity, requiring low privileges and user interaction.

Technical Details of CVE-2020-7303

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows authenticated remote users to execute scripts in a user's browser by adding a new label in McAfee's DLP ePO extension.

Affected Systems and Versions

Product: DLP ePO extension
Vendor: McAfee
Versions affected: 11.3 (less than 11.3.28), 11.4 (less than 11.4.200), 11.5 (less than 11.5.3)

Exploitation Mechanism

The vulnerability can be exploited by authenticated remote users to trigger scripts in a user's browser through the addition of a new label.

Mitigation and Prevention

Protecting systems from CVE-2020-7303 is crucial to maintaining security.

Immediate Steps to Take

Update the DLP ePO extension to version 11.5.3 or higher.
Monitor and restrict user permissions to minimize the risk of exploitation.

Long-Term Security Practices

Conduct regular security training to educate users on identifying and avoiding phishing attempts.
Implement Content Security Policy (CSP) to mitigate Cross-Site Scripting attacks.

Patching and Updates

Apply security patches and updates provided by McAfee to address the vulnerability effectively.