Updated Firefox paackages are available for CentOS 5
CentOS Errata and Security Advisory 2016:1912 CriticalFirefox Security Update for CentOS 5
Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1912.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )
i386:
2ce0afdb82af0c333af9f9576b7d34681cb0ee3f5a2e110ced675fcb60318cd4 firefox-45.4.0-1.el5.centos.i386.rpm
x86_64:
2ce0afdb82af0c333af9f9576b7d34681cb0ee3f5a2e110ced675fcb60318cd4 firefox-45.4.0-1.el5.centos.i386.rpm
6e4b4673b2ef0b166b48bce94cf130b3962d4ee880202c2730ea100b8bc72349 firefox-45.4.0-1.el5.centos.x86_64.rpm
Source:
a76139ad1d2b42254a5803d3f970102f55dd75111e75f4286673f8e64ce40596 firefox-45.4.0-1.el5.centos.src.rpm