Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability

2020-08-1107:00:00

Microsoft

msrc.microsoft.com

remote desktop gateway

denial of service

vulnerability

rdp

specially crafted requests

server

update

microsoft

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

Percentile

9.5%

JSON

A denial of service vulnerability exists in Windows Remote Desktop Gateway (RD Gateway) 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 RD Gateway 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 RD Gateway services.

The update addresses the vulnerability by correcting how RD Gateway handles connection requests.