#VU46494 Arbitrary file upload in Microsoft Dynamics 365 for Finance and Operations (on-premises)


Published: 2020-09-08

Vulnerability identifier: #VU46494

Vulnerability risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-16857

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Dynamics 365 for Finance and Operations (on-premises)
Web applications / CRM systems

Vendor: Microsoft

Description

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote user  with privileges to import and export data can upload a malicious file and execute it on the server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Dynamics 365 for Finance and Operations (on-premises): 10.0.11


External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16857


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability