AlertsMicrosoft Azure Security Advisory

Number: AV21-593
Date: 19 November 2021

On 17 November 2021 Microsoft published a Security Update to address a vulnerability in the following products:

  • Azure Automation
  • Azure Migrate Appliances
  • Azure Site Recovery
  • Azure AD applications and Service Principals

The Cyber Centre encourages users and administrators to review the provided web link and perform the suggested mitigations.

Azure Active Directory Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42306 

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.

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