CVE-2020-16927: Windows Remote Desktop Protocol (RDP) Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2020-Oct

Released

2020-10-13

EPSS Score

18.61% (percentile: 95.3%)

Description

A denial of service vulnerability exists in Remote Desktop Protocol (RDP) when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the RDP service on the target system to stop responding. To exploit this vulnerability, an attacker would need to run a specially crafted application against a server which provides Remote Desktop Protocol (RDP) services. The update addresses the vulnerability by correcting how RDP handles connection requests.

Affected Products (34)

Other

• 11497
• 11498
• 11563
• 11568
• 11569
• 11570
• 11571
• 11572
• 11712
• 11713
• 11714
• 11715
• 11453
• 11454
• 11583
• 11644
• 11645
• 11646
• 11647
• 11766
• 11767
• 11768
• 11769
• 10729
• 10735
• 10852
• 10853
• 10816
• 10855
• 10481
• 10482
• 10484
• 10483
• 10543

Security Updates (9)

• 4580330
• 4577668
• 4577671
• 4580328
• 4579311
• 4580327
• 4580346
• 4580347
• 4580358

Acknowledgments

VictorV (Tang Tianwen)

Revision History

• 2020-10-13: Information published.