Multiple vulnerabilities in Microsoft Windows Remote Desktop Protocol (RDP)

Published: 2021-11-09

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-38631 CVE-2021-41371
CWE-ID	CWE-200
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU58047

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38631

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Windows Remote Desktop Protocol (RDP). A local administrator can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 11 21H2

Windows Server: 2008 - 2019 2004

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38631

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

2) Information disclosure

EUVDB-ID: #VU58048