Microsoft Security Updates MS17-010 - (SMBv1)

Number: AV17-068
Date: 13 May 2017


The purpose of this advisory is to bring attention to the release of a patch by Microsoft for end-of-life products recently impacted by a ransomware campaign known as “WCry”, “Wana”, “WCrypt”, “WanaDecryptor” or “WanaCry”.


Over the past 48 hours this ransomware campaign has been exploiting vulnerabilities in what are considered to be Microsoft “custom support only” products worldwide.  Microsoft has released a security update for all customers to protect the following vulnerable Windows platforms;

Suggested Action

CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly.


Microsoft: Customer Guidance for WannaCrypt attacks

Microsoft Security Bulletin MS17-010 - Critical
Security Update for Microsoft Windows SMB Server (4013389)

Microsoft Malware Protection Center

Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589

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