#VU49431 Input validation error in Microsoft Server applications


Published: 2021-01-12

Vulnerability identifier: #VU49431

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2021-1716

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office Web Apps Server
Server applications / Application servers
Microsoft SharePoint Server
Server applications / Application servers
Microsoft Office
Client/Desktop applications / Office applications
Microsoft Word
Client/Desktop applications / Office applications
Microsoft Office Web Apps
Client/Desktop applications / Office applications
Office Online Server
Server applications / Other server solutions

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 in Microsoft Word. A remote 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 Office Web Apps Server: 2013 Service Pack 1

Microsoft SharePoint Server: 2010 - 2019

Microsoft Office: 2010 Service Pack 2 - 2019 for Mac

Office Online Server : 2016

Microsoft Word: 2010 - 2016

Microsoft Office Web Apps: 2010 Service Pack 2


CPE

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1716


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability