CVE-2020-1591 Explained : Impact and Mitigation

Microsoft Dynamics 365 (On-Premise) Cross Site Scripting Vulnerability was published on August 17, 2020.

Understanding CVE-2020-1591

This CVE involves a cross-site scripting vulnerability in Microsoft Dynamics 365 (on-premises) version 9.0.

What is CVE-2020-1591?

A cross-site scripting vulnerability in Microsoft Dynamics 365 (on-premises) could allow an attacker to execute malicious scripts in the context of the current user.

The Impact of CVE-2020-1591

The vulnerability could enable an attacker to read unauthorized content, manipulate user actions, and inject malicious content into user browsers.

Technical Details of CVE-2020-1591

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from improper sanitization of web requests to affected Dynamics servers, enabling an attacker to execute cross-site scripting attacks.

Affected Systems and Versions

Vendor: Microsoft
Product: Microsoft Dynamics 365 (on-premises) version 9.0
Platforms: Unknown
Versions: 9.0.0

Exploitation Mechanism

An authenticated attacker could send a specifically crafted request to an affected Dynamics server to exploit this vulnerability.

Mitigation and Prevention

Following are the steps to mitigate and prevent this vulnerability.

Immediate Steps to Take

Apply the security update provided by Microsoft to ensure proper sanitization of web requests.
Monitor and restrict network access to affected Dynamics servers.

Long-Term Security Practices

Regularly update and patch Microsoft Dynamics 365 (on-premises) installations.
Conduct security training for users to recognize and report suspicious activity.
Implement secure coding practices to prevent cross-site scripting vulnerabilities.