Protect Your Microsoft Dynamics 365 Deployment from Cross-Site Scripting Attacks

CVECVE-2024-21389
CVSScvssV3_1: 7.6
SourceCVE-2024-21389

Microsoft Dynamics 365 is an enterprise resource planning (ERP) solution used by many organizations worldwide. According to a recent security advisory, versions of Dynamics 365 deployed on-premises are affected by a cross-site scripting (XSS) vulnerability.

XSS vulnerabilities occur when malicious scripts are injected into otherwise trusted websites. Attackers can exploit XSS flaws to steal user cookies and tokens, hijack user sessions, or redirect users to phishing pages. In the case of Dynamics 365, this could allow an attacker to access sensitive company data or take over administrator accounts.

The vulnerability resides in the way Dynamics 365 handles specially crafted URLs. By tricking a user into clicking a malicious link, an attacker could execute scripts in the user’s browser session within the Dynamics 365 application. This would potentially give the attacker the same permissions as the compromised user.

To protect your Dynamics 365 deployment, make sure to apply any security updates from Microsoft as soon as they are released. You should also educate your users about the risks of clicking unknown links or downloading untrusted files. Using multi-factor authentication can also reduce the impact of an XSS attack by making it harder for an unauthorized person to access accounts even if credentials are stolen.

Stay vigilant and prioritize your organization’s security. Taking basic precautions can help prevent this Dynamics 365 vulnerability from being exploited.

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