Number: AV21-392
Date: 12 August 2021
On 11 August 2021 Mozilla published a Security Advisory to address vulnerabilities in the following product:
- Thunderbird – versions prior to 91
Exploitation of some of these vulnerabilities could result in a denial-of-service or the execution of arbitrary code.
The Cyber Centre encourages users and administrators to review the provided web link and apply the necessary update.
Thunderbird (MFSA 2021-36)
https://www.mozilla.org/en-US/security/advisories/mfsa2021-36/
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.