Apple Security Updates

Number: AV18-069
Date: 25 April 2018


The purpose of this advisory is to bring attention to recently released security updates by Apple.


Apple has released security updates for vulnerabilities in various Apple products.

Affected Products:
- iOS 11.3
- macOS High Sierra, versions previous to 10.13.4
- Safari 11.1

CVE Reference: CVE-2018-4200, CVE-2018-4204, CVE-2018-4206, CVE-2018-4187

Suggested Action

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


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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