this vulnerability is on the lastest
version
of apache
so there is nothing to upgrade
if you have installed this version of apache on redHat-Enterprise (version:4 or 5 or 6)
so your are not affected
if no :
this vulneravility is about session_start(); $_session();
whene session_id is set by the php there is no session_expired
that renew the session_id
Solution:
dont use this module session_start();
and wait fot he new update of the apache
that's all and there is nothing to Carry about