Jehan Procaccia generously shares RPM packages of Apache 2.0.52 and Apache 2.0.53 with MOD_CAS. He wrote to the CAS discussion list:
I have RPM packaged apache 2.0.52 and 2.0.53 including mod_cas. It also includes a pached mod_dir which allows DirectoryIndex directive to work correctly with CAS redirections. 2.0.53 includes latest mod_cas from cas client 2.0.11 and modification from esup-portail.