CVE-2023-21570 : What You Need to Know

This CVE involves a Cross-site Scripting Vulnerability in Microsoft Dynamics 365 (on-premises) versions 9.1 and 9.0. The vulnerability was published on February 14, 2023, by Microsoft.

Understanding CVE-2023-21570

This section will delve into details about the nature of CVE-2023-21570 in Microsoft Dynamics 365 (on-premises) and its potential impacts.

What is CVE-2023-21570?

The CVE-2023-21570 is a Cross-site Scripting Vulnerability found in Microsoft Dynamics 365 (on-premises) versions 9.1 and 9.0. This vulnerability could allow an attacker to execute malicious scripts in the context of an authenticated user.

The Impact of CVE-2023-21570

The impact of this vulnerability includes the potential for attackers to carry out spoofing attacks, wherein they could impersonate legitimate users and gain unauthorized access to sensitive information within the affected systems.

Technical Details of CVE-2023-21570

In this section, we will discuss the specifics of the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

The vulnerability arises due to inadequate input validation in Microsoft Dynamics 365 (on-premises) versions 9.1 and 9.0, allowing malicious scripts to be injected and executed within the application.

Affected Systems and Versions

Microsoft Dynamics 365 (on-premises) version 9.1: Affected versions range from 9.1.0 to less than 9.1.16.20.
Microsoft Dynamics 365 (on-premises) version 9.0: Affected versions range from 9.0.0 to less than 9.0.45.11.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting and injecting malicious scripts into input fields or URLs within Microsoft Dynamics 365 (on-premises), leading to the execution of unauthorized code.

Mitigation and Prevention

Here, we will discuss steps to mitigate the risks posed by CVE-2023-21570 and prevent potential exploitation.

Immediate Steps to Take

Organizations using affected versions should apply patches released by Microsoft promptly to address this vulnerability.
It is recommended to implement input validation mechanisms and security controls to prevent cross-site scripting attacks.

Long-Term Security Practices

Regular security assessments and penetration testing can help in identifying and addressing vulnerabilities before they are exploited.
Educating users about safe browsing practices and recognizing phishing attempts can also enhance overall security posture.

Patching and Updates

Stay informed about security updates and patches released by Microsoft for Microsoft Dynamics 365 (on-premises) to ensure that the system is protected against known vulnerabilities like CVE-2023-21570.