An updated rusers package has been released for CentOS-3 x86_64
New rusers packages are available for CentOS-3 x86_64. Refer to https://rhn.redhat.com/errata/RHBA-2004-477.html.
RPMS/rusers-0.17-40.30.2.x86_64.rpm
RPMS/rusers-server-0.17-40.30.2.x86_64.rpm
SRPMS/rusers-0.17-40.30.2.src.rpm
Execute "yum update rusers" to apply.