[refpolicy] new service_puppet.patch

Christopher J. PeBenito cpebenito at tresys.com
Tue Oct 27 08:18:56 CDT 2009


On Tue, 2009-10-27 at 08:45 -0400, Craig Grube wrote:
> From dc34f726bc7f5ce430fb9253547a543c427c6602 Mon Sep 17 00:00:00 2001
> From: Craig Grube <Craig.Grube at cobham.com>
> Date: Wed, 23 Sep 2009 19:25:04 -0400
> Subject: [PATCH 1/1] introduction of policy for Puppet configuration management system

Comments inline.  I was working on my own puppet policy, so I have
additional insight into this.  Also, it is preferred that you send the
patch you get from "git format-patch" via "git send-email" so that the
patch can be easily applied via git am.

> 
> Signed-off-by: Craig Grube <Craig.Grube at cobham.com>
> ---
>  policy/modules/admin/usermanage.te      |    8 +
>  policy/modules/kernel/corenetwork.te.in |    1 +
>  policy/modules/services/puppet.fc       |   13 ++
>  policy/modules/services/puppet.if       |   51 +++++++
>  policy/modules/services/puppet.te       |  225 +++++++++++++++++++++++++++++++
>  policy/modules/system/init.if           |   20 +++
>  policy/modules/system/init.te           |    4 +
>  policy/modules/system/libraries.te      |    5 +
>  8 files changed, 327 insertions(+), 0 deletions(-)
>  create mode 100644 policy/modules/services/puppet.fc
>  create mode 100644 policy/modules/services/puppet.if
>  create mode 100644 policy/modules/services/puppet.te
> 
> diff --git a/policy/modules/admin/usermanage.te b/policy/modules/admin/usermanage.te
> index 1865872..e8c66c1 100644
> --- a/policy/modules/admin/usermanage.te
> +++ b/policy/modules/admin/usermanage.te
> @@ -247,6 +247,10 @@ optional_policy(`
>         rpm_rw_pipes(groupadd_t)
>  ')
>  
> +optional_policy(`
> +       puppet_write_puppet_tmp(groupadd_t)
> +')
> +
>  ########################################
>  #
>  # Passwd local policy
> @@ -524,3 +528,7 @@ optional_policy(`
>         rpm_use_fds(useradd_t)
>         rpm_rw_pipes(useradd_t)
>  ')
> +
> +optional_policy(`
> +       puppet_write_puppet_tmp(useradd_t)
> +')
> diff --git a/policy/modules/kernel/corenetwork.te.in b/policy/modules/kernel/corenetwork.te.in
> index 9d100fe..3fa5007 100644
> --- a/policy/modules/kernel/corenetwork.te.in
> +++ b/policy/modules/kernel/corenetwork.te.in
> @@ -155,6 +155,7 @@ network_port(prelude, tcp,4690,s0, udp,4690,s0)
>  network_port(printer, tcp,515,s0)
>  network_port(ptal, tcp,5703,s0)
>  network_port(pulseaudio, tcp,4713,s0)
> +network_port(puppet, tcp, 8140, s0)
>  network_port(pxe, udp,4011,s0)
>  network_port(pyzor, udp,24441,s0)
>  network_port(radacct, udp,1646,s0, udp,1813,s0)
> diff --git a/policy/modules/services/puppet.fc b/policy/modules/services/puppet.fc
> new file mode 100644
> index 0000000..8cc04c3
> --- /dev/null
> +++ b/policy/modules/services/puppet.fc
> @@ -0,0 +1,13 @@
> +/etc/puppet(/.*)?                       gen_context(system_u:object_r:puppet_etc_t, s0)
> +
> +/etc/rc\.d/init\.d/puppet       --      gen_context(system_u:object_r:puppet_initrc_exec_t, s0)
> +/etc/rc\.d/init\.d/puppetmaster --      gen_context(system_u:object_r:puppetmasterd_initrc_exec_t, s0)
> +
> +/usr/sbin/puppetd               --      gen_context(system_u:object_r:puppet_exec_t, s0)
> +/usr/sbin/puppetmasterd         --      gen_context(system_u:object_r:puppetmaster_exec_t, s0)
> +
> +/var/lib/puppet(/.*)?                   gen_context(system_u:object_r:puppet_var_lib_t, s0)
> +/var/log/puppet(/.*)?                   gen_context(system_u:object_r:puppet_log_t, s0)
> +/var/run/puppet(/.*)?                   gen_context(system_u:object_r:puppet_var_run_t, s0)
> +
> +
> diff --git a/policy/modules/services/puppet.if b/policy/modules/services/puppet.if
> new file mode 100644
> index 0000000..9c19661
> --- /dev/null
> +++ b/policy/modules/services/puppet.if
> @@ -0,0 +1,51 @@
> +## <summary>Puppet client daemon</summary>  
> +## <desc>                                  
> +##  <p>
> +##     Puppet is a configuration management system written in Ruby.   
> +##     The client daemon is responsible for periodically requesting the   
> +##     desired system state from the server and ensuring the state of    
> +##     the client system matches.                                       
> +##  </p>                                                                
> +## </desc> 
> + 
> +################################################  
> +## <summary>    
> +##      Read / Write to Puppet temp files.  Puppet uses  
> +##      some system binaries (groupadd, etc) that run in 
> +##      a non-puppet domain and redirects output into temp 
> +##      files.                                            
> +## </summary>                                            
> +## <param name="domain">                                
> +##      <summary>                                      
> +##              Domain allowed access                 
> +##      </summary>                                   
> +## </param>                                         
> +##               
> +interface(`puppet_write_puppet_tmp', `
> +        gen_require(`
> +                type puppet_tmp_t;
> +        ')
> +
> +        allow $1 puppet_tmp_t:file rw_file_perms;
> +       files_search_tmp($1)
> +')
> +
> +
> +##################################################
> +## <summary>
> +##     Allow attempts to use puppet file descriptors
> +##     Occurs when puppet redirects program output to
> +##      /dev/null
> +## </summary>
> +## <param name="domain">
> +##     <summary>
> +##             Domain allowed access
> +##     </summary>
> +## </param>
> +##
> +interface(`puppet_fd_use', `
> +       gen_require(`
> +               type puppet_t;
> +       ')
> +       allow $1 puppet_t:fd use;
> +') 
> diff --git a/policy/modules/services/puppet.te b/policy/modules/services/puppet.te
> new file mode 100644
> index 0000000..60c68a6
> --- /dev/null
> +++ b/policy/modules/services/puppet.te
> @@ -0,0 +1,225 @@
> +
> +policy_module(puppet, 0.0.1)
> +
> +########################################
> +#
> +# Puppet personal declarations
> +#
> +
> +type puppet_t;
> +type puppet_exec_t;
> +init_daemon_domain(puppet_t, puppet_exec_t)
> +
> +type puppet_initrc_exec_t;
> +init_script_file(puppet_initrc_exec_t);
> +
> +type puppet_log_t;
> +logging_log_file(puppet_log_t)
> +
> +type puppet_var_lib_t;
> +files_type(puppet_var_lib_t)
> +
> +type puppet_var_run_t;
> +files_pid_file(puppet_var_run_t)
> +
> +type puppet_etc_t;
> +files_config_file(puppet_etc_t)
> +
> +type puppet_tmp_t;
> +files_tmp_file(puppet_tmp_t)
> +
> +########################################
> +#
> +# Pupper master personal declarations
> +#
> +
> +type puppetmaster_t;
> +type puppetmaster_exec_t;
> +init_daemon_domain(puppetmaster_t, puppetmaster_exec_t)
> +
> +type puppetmasterd_initrc_exec_t;
> +init_script_file(puppetmasterd_initrc_exec_t)
> +
> +type puppetmaster_tmp_t;
> +files_tmp_file(puppetmaster_tmp_t)
> +
> +########################################
> +#
> +# Puppet personal policy
> +#
> +
> +allow puppet_t self:capability { sys_admin fowner fsetid setuid setgid sys_rawio dac_override sys_nice sys_ptrace sys_tty_config };

I didn't have all these capabilities, and I'm concerned that its far too
much, as if some tools were just exec'ed instead of transitioned --
especially sys_rawio and sys_admin.

> +allow puppet_t self:fifo_file rw_fifo_file_perms;
> +allow puppet_t self:netlink_route_socket create_netlink_socket_perms;
> +allow puppet_t self:process { signal signull getsched setsched };
> +allow puppet_t self:tcp_socket create_stream_socket_perms;
> +allow puppet_t self:udp_socket create_socket_perms;
> +
> +search_dirs_pattern(puppet_t, puppet_etc_t, puppet_etc_t)
> +read_files_pattern(puppet_t, puppet_etc_t, puppet_etc_t)
> +
> +manage_dirs_pattern(puppet_t ,puppet_var_lib_t, puppet_var_lib_t)
> +manage_files_pattern(puppet_t, puppet_var_lib_t, puppet_var_lib_t)
> +
> +rw_dirs_pattern(puppet_t, puppet_var_run_t, puppet_var_run_t)

Redundant

> +setattr_dirs_pattern(puppet_t, puppet_var_run_t, puppet_var_run_t)
> +manage_files_pattern(puppet_t, puppet_var_run_t, puppet_var_run_t)
> +files_pid_filetrans(puppet_t, puppet_var_run_t, { file dir })
> +
> +manage_dirs_pattern(puppet_t, puppet_tmp_t, puppet_tmp_t)
> +manage_files_pattern(puppet_t, puppet_tmp_t, puppet_tmp_t)
> +files_tmp_filetrans(puppet_t, puppet_tmp_t, { file dir })
> +
> +auth_manage_all_files_except_shadow(puppet_t)
> +auth_relabel_all_files_except_shadow(puppet_t)

I think this is extremely excessive; it should be conditional.  Instead,
I think the best default would be to start using a config file in the
files module, and have puppet manage all config files as the default
access.

> +corenet_sendrecv_puppet_client_packets(puppet_t)
> +corenet_tcp_connect_puppet_port(puppet_t)
> +
> +corenet_all_recvfrom_netlabel(puppet_t)
> +corenet_all_recvfrom_unlabeled(puppet_t)
> +
> +corenet_tcp_sendrecv_all_if(puppet_t)
> +corenet_tcp_sendrecv_all_nodes(puppet_t)
> +corenet_tcp_bind_all_nodes(puppet_t)

replace "all" with "generic"

> +corecmd_exec_bin(puppet_t)
> +corecmd_exec_shell(puppet_t)
> +
> +dev_read_rand(puppet_t)
> +dev_read_sysfs(puppet_t)
> +dev_read_urand(puppet_t)
> +
> +domain_read_all_domains_state(puppet_t)
> +domain_interactive_fd(puppet_t)
> +
> +files_read_etc_files(puppet_t)
> +
> +init_all_labeled_script_domtrans(puppet_t)
> +init_domtrans_script(puppet_t)
> +init_read_utmp(puppet_t)
> +init_signull_script(puppet_t)
> +
> +kernel_dontaudit_search_sysctl(puppet_t)
> +kernel_dontaudit_search_kernel_sysctl(puppet_t)
> +kernel_read_system_state(puppet_t)
> +kernel_read_crypto_sysctls(puppet_t)
> +
> +logging_send_syslog_msg(puppet_t)
> +
> +miscfiles_read_hwdata(puppet_t)
> +miscfiles_read_localization(puppet_t)
> +
> +selinux_search_fs(puppet_t)
> +selinux_set_all_booleans(puppet_t)
> +selinux_set_generic_booleans(puppet_t)
> +selinux_validate_context(puppet_t)
> +
> +seutil_domtrans_setfiles(puppet_t)
> +seutil_domtrans_semanage(puppet_t)                                                                                                                
> +seutil_manage_default_contexts(puppet_t)

> +seutil_manage_file_contexts(puppet_t)

Why would this be necessary?  The file contexts should be semanage.
Local changes to the file contexts should also be made through semanage.

> +
> +sysnet_dns_name_resolve(puppet_t)
> +sysnet_run_ifconfig(puppet_t, system_r)
> +
> +term_dontaudit_getattr_unallocated_ttys(puppet_t)
> +term_dontaudit_getattr_all_user_ttys(puppet_t)
> +
> +optional_policy(`
> +       consoletype_domtrans(puppet_t)
> +')
> +
> +optional_policy(`
> +       hostname_exec(puppet_t)
> +')
> +
> +optional_policy(`
> +       rpm_domtrans(puppet_t)
> +')
> +
> +optional_policy(`
> +        unconfined_domain(puppet_t)
> +')
> +
> +optional_policy(`
> +       usermanage_domtrans_groupadd(puppet_t)
> +       usermanage_domtrans_useradd(puppet_t)
> +')
> +########################################
> +#
> +# Pupper master personal policy
> +#
> +
> +allow puppetmaster_t self:capability { dac_read_search dac_override setuid setgid fowner chown fsetid sys_tty_config };
> +allow puppetmaster_t self:fifo_file rw_fifo_file_perms;;
> +allow puppetmaster_t self:netlink_route_socket create_netlink_socket_perms;
> +allow puppetmaster_t self:process signal_perms;
> +allow puppetmaster_t self:socket create;
> +allow puppetmaster_t self:tcp_socket create_stream_socket_perms;
> +allow puppetmaster_t self:udp_socket create_socket_perms;
> +
> +list_dirs_pattern(puppetmaster_t, puppet_etc_t, puppet_etc_t)
> +read_files_pattern(puppetmaster_t, puppet_etc_t, puppet_etc_t)
> +
> +manage_dirs_pattern(puppetmaster_t ,puppet_var_lib_t, puppet_var_lib_t)
> +manage_files_pattern(puppetmaster_t, puppet_var_lib_t, puppet_var_lib_t)
> +
> +rw_dirs_pattern(puppetmaster_t, puppet_var_run_t, puppet_var_run_t)

Redundant

> +setattr_dirs_pattern(puppetmaster_t, puppet_var_run_t, puppet_var_run_t)
> +manage_files_pattern(puppetmaster_t, puppet_var_run_t, puppet_var_run_t)
> +files_pid_filetrans(puppetmaster_t, puppet_var_run_t, { file dir })
> +
> +rw_dirs_pattern(puppetmaster_t, puppet_log_t, puppet_log_t)
> +setattr_dirs_pattern(puppetmaster_t, puppet_log_t, puppet_log_t)
> +setattr_files_pattern(puppetmaster_t, puppet_log_t, puppet_log_t)
> +create_files_pattern(puppetmaster_t, puppet_log_t, puppet_log_t)
> +append_files_pattern(puppetmaster_t, puppet_log_t, puppet_log_t)
> +rw_files_pattern(puppetmaster_t, puppet_log_t, puppet_log_t)
> +logging_log_filetrans(puppetmaster_t, puppet_log_t, { file dir })
> +
> +manage_dirs_pattern(puppetmaster_t, puppetmaster_tmp_t, puppet_tmp_t)
> +manage_files_pattern(puppetmaster_t, puppetmaster_tmp_t, puppet_tmp_t)
> +files_tmp_filetrans(puppetmaster_t, puppetmaster_tmp_t, { file dir })
> +
> +corenet_sendrecv_puppet_server_packets(puppetmaster_t)
> +corenet_tcp_bind_puppet_port(puppetmaster_t)
> +
> +corenet_all_recvfrom_netlabel(puppetmaster_t)
> +corenet_all_recvfrom_unlabeled(puppetmaster_t)
> +
> +corenet_tcp_sendrecv_all_if(puppetmaster_t)
> +corenet_tcp_sendrecv_all_nodes(puppetmaster_t)
> +corenet_tcp_bind_all_nodes(puppetmaster_t)

replace "all" with "generic".

> +
> +corecmd_exec_bin(puppetmaster_t)
> +corecmd_exec_shell(puppetmaster_t)
> +
> +files_read_etc_files(puppetmaster_t)
> +
> +dev_read_rand(puppetmaster_t)
> +dev_read_urand(puppetmaster_t)
> +
> +domain_read_all_domains_state(puppetmaster_t)
> +
> +kernel_dontaudit_search_kernel_sysctl(puppetmaster_t)
> +kernel_read_system_state(puppetmaster_t)
> +kernel_read_crypto_sysctls(puppetmaster_t)
> +
> +logging_send_syslog_msg(puppetmaster_t)
> +
> +miscfiles_read_localization(puppetmaster_t)
> +
> +sysnet_dns_name_resolve(puppetmaster_t)
> +sysnet_run_ifconfig(puppetmaster_t, system_r)
> +
> +optional_policy(`
> +       hostname_exec(puppetmaster_t)
> +')
> +
> +optional_policy(`    
> +       rpm_domtrans(puppetmaster_t)
> +       rpm_read_db(puppetmaster_t)
> +')

What is the puppetmaster doing with rpm?

> diff --git a/policy/modules/system/init.if b/policy/modules/system/init.if
> index 7637333..aa9f136 100644
> --- a/policy/modules/system/init.if
> +++ b/policy/modules/system/init.if
> @@ -720,6 +720,26 @@ interface(`init_labeled_script_domtrans',`
>         files_search_etc($1)
>  ')
>  
> +#########################################
> +## <summary>
> +##     Transition to the init script domain
> +##     for all labeled init script types
> +## </summary>
> +## <param name="domain">
> +##     <summary>
> +##             Domain allowed access
> +##     </summary>
> +## </param>
> +#########################################
> +interface(`init_all_labeled_script_domtrans',`
> +       gen_require(`
> +               attribute init_script_file_type;
> +       ')
> +
> +       init_labeled_script_domtrans($1, init_script_file_type)
> +')
> +
> +
>  ########################################
>  ## <summary>
>  ##     Start and stop daemon programs directly.
> diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te
> index efe5277..6770b40 100644
> --- a/policy/modules/system/init.te
> +++ b/policy/modules/system/init.te
> @@ -688,6 +688,10 @@ optional_policy(`
>  ')
>  
>  optional_policy(`
> +       puppet_write_puppet_tmp(initrc_t)
> +')
> +
> +optional_policy(`
>         quota_manage_flags(initrc_t)
>  ')
>  
> diff --git a/policy/modules/system/libraries.te b/policy/modules/system/libraries.te
> index 0c4f4ba..8989eb3 100644
> --- a/policy/modules/system/libraries.te
> +++ b/policy/modules/system/libraries.te
> @@ -123,3 +123,8 @@ optional_policy(`
>         # blow up.
>         rpm_manage_script_tmp_files(ldconfig_t)
>  ')
> +
> +
> +optional_policy(`
> +       puppet_write_puppet_tmp(ldconfig_t)
> +')
> -- 
> 1.6.2.5


-- 
Chris PeBenito
Tresys Technology, LLC
(410) 290-1411 x150



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