Microsoft security advisory – July 2020 monthly rollup

Number: AV20-253
Date: 15 July 2020

On 14 July 2020 Microsoft released security updates to address vulnerabilities in multiple products. Included were critical patches for the following:

• Microsoft Windows
• Microsoft Windows Server
• Internet Explorer
• Microsoft Office
• Skype for Business
• Visual Studio
• .NET Framework
• Lync Server

Of note is a critical vulnerability VulnerabilityA flaw or weakness in the design or implementation of an information system or its environment that could be exploited to adversely affect an organization's assets or operations. , tracked as CVE-2020-1350, in all versions of Windows Server that are configured with the Domain Name System server role. This “wormable” vulnerability could allow a remote actor to run arbitrary code in the context of the Local System Account.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350

The Cyber Centre encourages users and administrators to review the following web links and apply the necessary updates as soon as possible.

https://portal.msrc.microsoft.com/en-us/security-guidance

Release Notes:
https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/2020-Jul
 
Note to Readers
The Canadian Centre for Cyber Security Cyber securityThe protection of digital information, as well as the integrity of the infrastructure housing and transmitting digital information. More specifically, cyber security includes the body of technologies, processes, practices and response and mitigation measures designed to protect networks, computers, programs and data from attack, damage or unauthorized access so as to ensure confidentiality, integrity and availability. (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 Critical infrastructureProcesses, systems, facilities, technologies, networks, assets, and services essential to the health, safety, security, or economic well-being of Canadians and the effective functioning of government. Critical infrastructure can be stand-alone or interconnected and interdependent within and across provinces, territories, and national borders. Disruptions of critical infrastructure could result in catastrophic loss of life, adverse economic effects, and significant harm to public confidence. , 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.