CVE-2020-17147 : Vulnerability Insights and Analysis

On December 8, 2020, Microsoft Dynamics CRM Webclient was found to have a Cross-site Scripting Vulnerability.

Understanding CVE-2020-17147

This CVE involves a security issue in Microsoft Dynamics CRM Webclient that could allow for Cross-site Scripting attacks.

What is CVE-2020-17147?

The Dynamics CRM Webclient Cross-site Scripting Vulnerability is a security flaw in Microsoft Dynamics 365 (on-premises) versions 8.2 and 9.0 that could be exploited by attackers to execute malicious scripts in a victim's web browser.

The Impact of CVE-2020-17147

The impact of this vulnerability is classified as 'Spoofing' with a base severity rating of HIGH (8.7 CVSSv3.1).

Technical Details of CVE-2020-17147

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to inject and execute malicious scripts in the context of the user's session.

Affected Systems and Versions

Vendor: Microsoft
Affected Products: Microsoft Dynamics 365 (on-premises) versions 8.2 and 9.0
Platforms: Unknown
Versions: 8.2 (custom) and 9.0.0 (custom)

Exploitation Mechanism

The vulnerability can be exploited by tricking a user into clicking on a specially crafted link that executes malicious scripts.

Mitigation and Prevention

To address CVE-2020-17147, follow these mitigation strategies:

Immediate Steps to Take

Apply the necessary security updates provided by Microsoft.
Educate users about the risks of clicking on untrusted links.

Long-Term Security Practices

Regularly update and patch all software to prevent vulnerabilities.
Implement Content Security Policy (CSP) to mitigate Cross-site Scripting attacks.
Conduct regular security training for employees to enhance awareness.

Patching and Updates

Ensure that you install the latest security updates and patches released by Microsoft to address the vulnerability.