Apple Security Update for iOS

Number: AV16-134
Date: 25 August 2016


The purpose of this advisory is to bring attention to an Apple security update for iOS.


Apple has released the following support article:
HT207107 – iOS 9.3.5

Details:  This update addresses multiple vulnerabilities that could allow a malicious attacker to disclose kernel memory, execute arbitrary code with kernel privileges, and arbitrary code execution when visiting a maliciously crafted website.

CVE Reference: CVE-2016-4655, CVE-2016-4656, CVE-2016-4657

Suggested Action

CCIRC recommends that owner/operators test and deploy the vendor released updates or workarounds to affected platforms referred to in the Apple Support Article: HT207107.


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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