SB2021101236 - Multiple vulnerabilities in Microsoft Dynamics 365 (on-premises)

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Spoofing attack (CVE-ID: CVE-2021-41353)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in Microsoft Dynamics 365 (on-premises). A remote authenticated attacker can spoof page content.

2) Cross-site scripting (CVE-ID: CVE-2021-41354)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Microsoft Dynamics 365 (on-premises). A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41353
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41354