Stopping the service, removing the sockets and starting the service makes them come back with 644 as permission.
And purging the packages, cleaning out /var/lib/sss, installing sssd again and starting, the permission for /var/lib/sss/pipes/{nss,pam} are still 644, root owned.
Stopping the service, removing the sockets and starting the service makes them come back with 644 as permission.
And purging the packages, cleaning out /var/lib/sss, installing sssd again and starting, the permission for /var/lib/ sss/pipes/ {nss,pam} are still 644, root owned.