Number: AV20-369
Date: 14 October 2020
On 13 October 2020 Microsoft published Security Updates to address vulnerabilities in multiple products. Included were critical severity patches for the following:
- Adobe Flash Player
- Microsoft Office 2019
- Microsoft Outlook 2016
- Microsoft SharePoint - multiple versions
- Microsoft Windows Workstation and Server - multiple versions
Of note is a remote code execution vulnerability, tracked as CVE-2020-16898 which exists when the Windows TCP/IP stack improperly handles ICMPv6 Router Advertisement packets. An actor who successfully exploits this vulnerability could gain the ability to execute code on the target server or client. Microsoft has published updates which address the vulnerability by correcting how the Windows TCP/IP stack handles ICMPv6 Router Advertisement packets.
The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates as soon as possible.
CVE-2020-16898 | Windows TCP/IP Remote Code Execution Vulnerability
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898
Security Update Guide
https://portal.msrc.microsoft.com/en-us/security-guidance
October 2020 Release Notes
https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/2020-Oct
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.