Vulnerability identifier: #VU49395

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-2021-1707

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft SharePoint Server
Server applications / Application servers
Microsoft SharePoint Foundation
Server applications / Application servers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker can pass specially crafted input to the application and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SharePoint Server: 2016 - 2019

Microsoft SharePoint Foundation: 2010 Service Pack 2 - 2013

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1707

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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 Internet.

Is there known malware, which exploits this vulnerability?

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