/usr/share/perl5/EBox/CGI/ is in zentyal-users 2.3.15+quantal1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/EBox/CGI/UsersAndGroups/
/usr/share/perl5/EBox/CGI/UsersAndGroups/AddGroup.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/AddGroupToUser.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/AddUser.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/AddUserToGroup.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/Del.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/DelGroupFromUser.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/DelUserFromGroup.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/Group.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/Groups.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/ModifyGroup.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/ModifyUser.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/User.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/Users.pm
/usr/share/perl5/EBox/CGI/UsersAndGroups/Wizard/
/usr/share/perl5/EBox/CGI/UsersAndGroups/Wizard/Users.pm