CVE-2021-41353 : Security Advisory and Response

Microsoft Dynamics 365 (on-premises) Spoofing Vulnerability was published on October 13, 2021. It has a base severity of MEDIUM with a CVSS score of 5.4.

Understanding CVE-2021-41353

Microsoft Dynamics 365 (on-premises) Spoofing Vulnerability impacts specific versions of Microsoft Dynamics 365 on-premises.

What is CVE-2021-41353?

The vulnerability allows an attacker to spoof content displayed by the web browser, potentially leading to phishing attacks.

The Impact of CVE-2021-41353

Spoofing vulnerability can result in unauthorized access to sensitive information and deceive users through manipulated content.

Technical Details of CVE-2021-41353

The vulnerability affects Microsoft Dynamics 365 (on-premises) version 9.0 and 9.1.

Vulnerability Description

Type: Spoofing
Severity: MEDIUM (CVSS score: 5.4)
Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C

Affected Systems and Versions

Microsoft Dynamics 365 (on-premises) version 9.0: less than 9.0.31.7
Microsoft Dynamics 365 (on-premises) version 9.1: less than 9.1.4

Exploitation Mechanism

The vulnerability can be exploited by an attacker creating a specially crafted website to deceive users or intercept sensitive data.

Mitigation and Prevention

Immediate actions are necessary to mitigate the risk of exploitation.

Immediate Steps to Take

Apply security updates provided by Microsoft.
Educate users about phishing techniques and safe browsing practices.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Microsoft has released patches to address this vulnerability. Stay updated with the latest security releases from Microsoft.