Mozilla releases security updates to multiple applications

Mozilla has released updates to some of their applications in order to correct some critical security issues.
It is recommended to upgrade as soon as possible to the versions below, should you be using any of them:
Firefox 20.0
Firefox ESR 17.0.5
Thunderbird 17.0.5
Thunderbird ESR 17.0.5
SeaMonkey 2.17

More information: