255 lines
6.1 KiB
Plaintext
255 lines
6.1 KiB
Plaintext
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policy_module(ssh,1.6.1)
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########################################
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#
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# Declarations
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#
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## <desc>
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## <p>
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## allow host key based authentication
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## </p>
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## </desc>
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gen_tunable(allow_ssh_keysign,false)
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## <desc>
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## <p>
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## Allow ssh logins as sysadm_r:sysadm_t
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## </p>
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## </desc>
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gen_tunable(ssh_sysadm_login,false)
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attribute ssh_server;
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# Type for the ssh-agent executable.
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type ssh_agent_exec_t;
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files_type(ssh_agent_exec_t)
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# ssh client executable.
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type ssh_exec_t;
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corecmd_executable_file(ssh_exec_t)
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type ssh_keygen_t;
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type ssh_keygen_exec_t;
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init_system_domain(ssh_keygen_t,ssh_keygen_exec_t)
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role system_r types ssh_keygen_t;
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type ssh_keysign_exec_t;
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corecmd_executable_file(ssh_keysign_exec_t)
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type sshd_exec_t;
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corecmd_executable_file(sshd_exec_t)
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ssh_server_template(sshd)
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init_daemon_domain(sshd_t,sshd_exec_t)
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ssh_server_template(sshd_extern)
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type sshd_key_t;
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files_type(sshd_key_t)
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type sshd_tmp_t;
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files_tmp_file(sshd_tmp_t)
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files_poly_parent(sshd_tmp_t)
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ifdef(`enable_mcs',`
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init_ranged_daemon_domain(sshd_t,sshd_exec_t,s0 - mcs_systemhigh)
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')
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#################################
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#
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# sshd local policy
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#
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# sshd_t is the domain for the sshd program.
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#
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# so a tunnel can point to another ssh tunnel
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allow sshd_t self:netlink_route_socket r_netlink_socket_perms;
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allow sshd_t self:key { search link write };
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manage_dirs_pattern(sshd_t,sshd_tmp_t,sshd_tmp_t)
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manage_files_pattern(sshd_t,sshd_tmp_t,sshd_tmp_t)
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manage_sock_files_pattern(sshd_t,sshd_tmp_t,sshd_tmp_t)
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files_tmp_filetrans(sshd_t, sshd_tmp_t, { dir file sock_file })
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kernel_search_key(sshd_t)
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kernel_link_key(sshd_t)
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# for X forwarding
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corenet_tcp_bind_xserver_port(sshd_t)
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corenet_sendrecv_xserver_server_packets(sshd_t)
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ifdef(`targeted_policy',`
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unconfined_domain(sshd_t)
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')
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tunable_policy(`ssh_sysadm_login',`
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# Relabel and access ptys created by sshd
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# ioctl is necessary for logout() processing for utmp entry and for w to
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# display the tty.
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# some versions of sshd on the new SE Linux require setattr
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term_use_all_user_ptys(sshd_t)
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term_setattr_all_user_ptys(sshd_t)
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term_relabelto_all_user_ptys(sshd_t)
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userdom_spec_domtrans_all_users(sshd_t)
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userdom_signal_all_users(sshd_t)
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',`
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userdom_spec_domtrans_unpriv_users(sshd_t)
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userdom_signal_unpriv_users(sshd_t)
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userdom_setattr_unpriv_users_ptys(sshd_t)
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userdom_relabelto_unpriv_users_ptys(sshd_t)
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userdom_use_unpriv_users_ptys(sshd_t)
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')
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optional_policy(`
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daemontools_service_domain(sshd_t, sshd_exec_t)
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')
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optional_policy(`
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inetd_tcp_service_domain(sshd_t, sshd_exec_t)
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')
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optional_policy(`
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rpm_use_script_fds(sshd_t)
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')
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optional_policy(`
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rssh_spec_domtrans_all_users(sshd_t)
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# For reading /home/user/.ssh
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rssh_read_all_users_ro_content(sshd_t)
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')
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ifdef(`TODO',`
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tunable_policy(`ssh_sysadm_login',`
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# Relabel and access ptys created by sshd
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# ioctl is necessary for logout() processing for utmp entry and for w to
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# display the tty.
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# some versions of sshd on the new SE Linux require setattr
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allow sshd_t ptyfile:chr_file relabelto;
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optional_policy(`
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domain_trans(sshd_t, xauth_exec_t, userdomain)
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')
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',`
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optional_policy(`
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domain_trans(sshd_t, xauth_exec_t, unpriv_userdomain)
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')
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# Relabel and access ptys created by sshd
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# ioctl is necessary for logout() processing for utmp entry and for w to
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# display the tty.
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# some versions of sshd on the new SE Linux require setattr
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allow sshd_t userpty_type:chr_file { relabelto read write getattr ioctl setattr };
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')
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') dnl endif TODO
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#################################
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#
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# sshd_extern local policy
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#
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# sshd_extern_t is the domain for ssh from outside our network
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#
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ifdef(`strict_policy',`
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ifdef(`TODO',`
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domain_trans(initrc_t, sshd_exec_t, sshd_extern_t)
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domain_trans(sshd_extern_t, shell_exec_t, user_mini_domain)
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# Signal the user domains.
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allow sshd_extern_t user_mini_domain:process signal;
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ifdef(`xauth.te', `
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domain_trans(sshd_extern_t, xauth_exec_t, user_mini_domain)
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')
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# Relabel and access ptys created by sshd
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# ioctl is necessary for logout() processing for utmp entry and for w to
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# display the tty.
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# some versions of sshd on the new SE Linux require setattr
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allow sshd_extern_t user_mini_domain:chr_file { relabelto read write getattr ioctl setattr };
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# inheriting stream sockets is needed for "ssh host command" as no pty
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# is allocated
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allow user_mini_domain sshd_extern_t:unix_stream_socket rw_stream_socket_perms;
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optional_policy(`
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domain_trans(inetd_t, sshd_exec_t, sshd_extern_t)
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')
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ifdef(`direct_sysadm_daemon', `
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# Direct execution by sysadm_r.
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domain_auto_trans(sysadm_t, sshd_exec_t, sshd_t)
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role_transition sysadm_r sshd_exec_t system_r;
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')
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') dnl endif TODO
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')
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########################################
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#
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# ssh_keygen local policy
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#
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# ssh_keygen_t is the type of the ssh-keygen program when run at install time
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# and by sysadm_t
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dontaudit ssh_keygen_t self:capability sys_tty_config;
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allow ssh_keygen_t self:process { sigchld sigkill sigstop signull signal };
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allow ssh_keygen_t self:unix_stream_socket create_stream_socket_perms;
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allow ssh_keygen_t sshd_key_t:file manage_file_perms;
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files_etc_filetrans(ssh_keygen_t,sshd_key_t,file)
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kernel_read_kernel_sysctls(ssh_keygen_t)
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fs_search_auto_mountpoints(ssh_keygen_t)
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dev_read_sysfs(ssh_keygen_t)
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dev_read_urand(ssh_keygen_t)
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term_dontaudit_use_console(ssh_keygen_t)
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domain_use_interactive_fds(ssh_keygen_t)
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files_read_etc_files(ssh_keygen_t)
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init_use_fds(ssh_keygen_t)
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init_use_script_ptys(ssh_keygen_t)
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libs_use_ld_so(ssh_keygen_t)
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libs_use_shared_libs(ssh_keygen_t)
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logging_send_syslog_msg(ssh_keygen_t)
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allow ssh_keygen_t proc_t:dir r_dir_perms;
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allow ssh_keygen_t proc_t:lnk_file read;
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userdom_use_sysadm_ttys(ssh_keygen_t)
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userdom_dontaudit_use_unpriv_user_fds(ssh_keygen_t)
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# cjp: with the old daemon_(base_)domain being broken up into
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# a daemon and system interface, this probably is not needed:
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ifdef(`direct_sysadm_daemon',`
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userdom_dontaudit_use_sysadm_terms(ssh_keygen_t)
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')
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ifdef(`targeted_policy',`
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term_dontaudit_use_unallocated_ttys(ssh_keygen_t)
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term_dontaudit_use_generic_ptys(ssh_keygen_t)
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files_dontaudit_read_root_files(ssh_keygen_t)
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')
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optional_policy(`
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nscd_socket_use(ssh_keygen_t)
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')
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optional_policy(`
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seutil_sigchld_newrole(ssh_keygen_t)
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')
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optional_policy(`
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udev_read_db(ssh_keygen_t)
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')
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