Remote Desktop Services Remote Code Execution Vulnerability

Vulnerability Description

A remote code execution vulnerability exists in Remote Desktop Services – formerly known as Terminal Services – when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests. This vulnerability is pre-authentication and requires no user interaction. An attacker who successfully exploited this vulnerability could execute arbitrary code on the target system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would need to send a specially crafted request to the target systems Remote Desktop Service via RDP. The update addresses the vulnerability by correcting how Remote Desktop Services handles connection requests.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1226
• http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190819-01-windows-en
• https://cert-portal.siemens.com/productcert/pdf/ssa-187667.pdf