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pls see details here:-
https://www.us-cert.gov/ncas/current-activity/2015/03/20/Mozilla-Releases-Security-Updates-Firefox-Firefox-ESR-and-SeaMonkey
https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/
https://www.mozilla.org/en-US/security/known-vulnerabilities/seamonkey/