Number: AV20-010
Date: 14 January 2020
On 14 January 2020 Microsoft released security updates to address multiple vulnerabilities affecting some of its products. This rollup provides fixes for seven critical remote code execution vulnerabilities.
Of note is a critical remote code execution vulnerability, tracked as CVE-2020-0609 and CVE-2020-0610, which exists in Windows Remote Desktop Gateway. An unauthenticated, remote actor could send a specially crafted request which could lead to arbitrary code execution on the target system.
Also of note is an improper certificate validation vulnerability, tracked as CVE-2020-0601, which may be exploited to undermine how Windows verifies cryptographic trust for Elliptic Curve Cryptography certificates (ECC). This may lead to a loss of trust for any application using ECC certificates which rely on Windows for cryptographic functionality. The vulnerability affects Windows 10 and Windows Server 2016/2019.
The Cyber Centre encourages users and administrators to review the Microsoft January 2020 Security Updates webpage and apply the necessary updates:
https://portal.msrc.microsoft.com/en-us/security-guidance
Release Notes:
https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/2020-Jan
Note to Readers
The Canadian Centre for Cyber Security (Cyber Centre) operates as part of the Communications Security Establishment. We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure, Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.