CVE-2020-16864 : Exploit Details and Defense Strategies

Microsoft Dynamics 365 (On-Premise) Cross Site Scripting Vulnerability was published on September 8, 2020. The vulnerability affects Microsoft Dynamics 365 (on-premises) version 9.0.

Understanding CVE-2020-16864

A cross-site scripting vulnerability in Microsoft Dynamics 365 (on-premises) allows an authenticated attacker to execute malicious scripts on affected systems.

What is CVE-2020-16864?

The vulnerability arises from improper sanitization of web requests to an affected Dynamics server.
An attacker can exploit this by sending a specially crafted request to the server.
Successful exploitation enables cross-site scripting attacks, potentially compromising user security.

The Impact of CVE-2020-16864

Allows unauthorized reading of content and performing actions within Dynamics Server on behalf of the user.
Enables injection of malicious content into the user's browser.

Technical Details of CVE-2020-16864

The vulnerability details and affected systems.

Vulnerability Description

Dynamics Server fails to properly sanitize web requests, leading to a cross-site scripting vulnerability.

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 sends a specially crafted request to the affected Dynamics server to exploit the vulnerability.

Mitigation and Prevention

Protective measures against CVE-2020-16864.

Immediate Steps to Take

Apply the security update provided by Microsoft to ensure proper sanitization of web requests.

Long-Term Security Practices

Regularly update and patch Microsoft Dynamics 365 to mitigate security risks.
Educate users on safe browsing practices to prevent cross-site scripting attacks.

Patching and Updates

Stay informed about security advisories and apply patches promptly.