Provide references for CVE-2021-27189.
Where can I find more information about CVE-2021-27189?
References are available at: https://www.info-sec.ca/advisories/CIRA-Canadian-Shield.html, http://seclists.org/fulldisclosure/2021/Feb/72, http://packetstormsecurity.com/files/161507/CIRA-Canadian-Shield-Man-In-The-Middle.html.