CVE-2023-24921 Explained : Impact and Mitigation

This CVE-2023-24921 relates to a Cross-site Scripting Vulnerability identified in Microsoft Dynamics 365 (on-premises) versions 9.0 and 9.1. It was published on March 14, 2023, by Microsoft Dynamics 365.

Understanding CVE-2023-24921

This vulnerability, named "Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability," poses a threat to organizations using affected versions of Microsoft Dynamics 365 (on-premises).

What is CVE-2023-24921?

The CVE-2023-24921 vulnerability involves a Cross-site Scripting flaw in Microsoft Dynamics 365 (on-premises) version 9.0 and version 9.1. This flaw could potentially allow an attacker to execute malicious scripts in a victim's browser, leading to unauthorized actions being performed.

The Impact of CVE-2023-24921

The impact of this vulnerability could result in spoofing attacks, where malicious actors could impersonate legitimate users to gain unauthorized access to sensitive information or perform malicious activities within the affected Microsoft Dynamics 365 (on-premises) environments.

Technical Details of CVE-2023-24921

The following technical aspects of CVE-2023-24921 are crucial to understand the nature of this vulnerability:

Vulnerability Description

The vulnerability stems from a Cross-site Scripting (XSS) issue in Microsoft Dynamics 365 (on-premises) versions 9.0 and 9.1, allowing attackers to inject and execute malicious scripts within the application context.

Affected Systems and Versions

Affected Systems: Microsoft Dynamics 365 (on-premises)
Affected Versions:
Microsoft Dynamics 365 (on-premises) version 9.0 (less than 9.0.45.11)
Microsoft Dynamics 365 (on-premises) version 9.1 (less than 9.1.16.20)

Exploitation Mechanism

Exploiting this vulnerability involves injecting malicious scripts through user inputs or manipulated URLs, which can then be executed within the vulnerable web application, potentially leading to unauthorized access or data manipulation.

Mitigation and Prevention

To address and mitigate the risks associated with CVE-2023-24921, organizations should consider the following measures:

Immediate Steps to Take

Organizations should apply security patches or updates released by Microsoft to fix the Cross-site Scripting vulnerability in affected versions of Microsoft Dynamics 365 (on-premises).
Implement security controls to sanitize user inputs and validate data to prevent malicious script injections.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities in enterprise applications.
Educate employees on safe browsing practices and awareness regarding phishing attempts that may exploit Cross-site Scripting vulnerabilities.

Patching and Updates

Stay informed about security updates and patches provided by Microsoft for Microsoft Dynamics 365 (on-premises) to ensure the timely mitigation of known vulnerabilities.
Implement a robust patch management process to promptly apply security updates and fixes to mitigate the risk of exploitation.

By following these mitigation strategies and best practices, organizations can enhance the security posture of their Microsoft Dynamics 365 (on-premises) environments and reduce the potential impact of CVE-2023-24921.