Vulnerability identifier: #VU53116

Vulnerability risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28461

CWE-ID: CWE-79

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Dynamics 365 for Finance and Operations
Web applications / CRM systems

Vendor: Microsoft

Description

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 Dynamics Finance and Operations. A remote authenticated attacker on the local network 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Dynamics 365 for Finance and Operations: All versions

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28461

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.