Number: AV21-143
Date: 29 March 2021
On 26 March 2021 Apple published Security Updates to address a vulnerability in the following products:
- iOS – versions prior to 12.5.2
- iOS – versions prior to 14.4.2
- iPadOS – versions prior to 14.4.2
- watchOS – versions prior to 7.3.3
Exploitation of this vulnerability could result in universal cross-site scripting. Apple is aware of a report that this vulnerability may have been actively exploited.
The Cyber Centre encourages users and administrators to review the following web link and apply the necessary updates.
iOS and iPadOS
https://support.apple.com/en-ca/HT212256
https://support.apple.com/en-ca/HT212257
WatchOS
https://support.apple.com/en-ca/HT212258
Apple Security Updates
https://support.apple.com/en-us/HT201222
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.