133 lines
3.8 KiB
Plaintext
133 lines
3.8 KiB
Plaintext
#DESC User - Domains for ordinary users.
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#
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#################################
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# Booleans for user domains.
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# Allow users to read system messages.
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bool user_dmesg false;
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# Support NFS home directories
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bool use_nfs_home_dirs false;
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# Allow execution of anonymous mappings, e.g. executable stack.
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bool allow_execmem false;
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# Support Share libraries with Text Relocation
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bool allow_execmod false;
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# Support SAMBA home directories
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bool use_samba_home_dirs false;
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# Allow users to run TCP servers (bind to ports and accept connection from
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# the same domain and outside users) disabling this forces FTP passive mode
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# and may change other protocols
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bool user_tcp_server false;
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# Allow system to run with NIS
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bool allow_ypbind false;
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# Allow system to run with kerberos
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bool allow_kerberos false;
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# Allow users to rw usb devices
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bool user_rw_usb false;
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# Allow users to control network interfaces (also needs USERCTL=true)
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bool user_net_control false;
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# Allow regular users direct mouse access
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bool user_direct_mouse false;
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# Allow user to r/w noextattrfile (FAT, CDROM, FLOPPY)
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bool user_rw_noexattrfile false;
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# Allow reading of default_t files.
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bool read_default_t false;
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# Allow staff_r users to search the sysadm home dir and read
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# files (such as ~/.bashrc)
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bool staff_read_sysadm_file false;
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# change from role $1_r to $2_r and relabel tty appropriately
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define(`role_tty_type_change', `
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allow $1_r $2_r;
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type_change $2_t $1_devpts_t:chr_file $2_devpts_t;
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type_change $2_t $1_tty_device_t:chr_file $2_tty_device_t;
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# avoid annoying messages on terminal hangup
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dontaudit $1_t { $2_devpts_t $2_tty_device_t }:chr_file ioctl;
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')
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# Reach sysadm_t via programs like userhelper/sudo/su
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undefine(`reach_sysadm')
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define(`reach_sysadm', `
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ifdef(`userhelper.te', `userhelper_domain($1)')
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ifdef(`sudo.te', `sudo_domain($1)')
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ifdef(`su.te', `
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su_domain($1)
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# When an ordinary user domain runs su, su may try to
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# update the /root/.Xauthority file, and the user shell may
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# try to update the shell history. This is not allowed, but
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# we dont need to audit it.
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dontaudit $1_su_t { sysadm_home_dir_t staff_home_dir_t }:dir search;
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dontaudit $1_su_t { sysadm_home_t staff_home_t }:dir rw_dir_perms;
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dontaudit $1_su_t { sysadm_home_t staff_home_t }:file create_file_perms;
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') dnl ifdef su.te
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')
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# Privileged user domain
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undefine(`priv_user')
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define(`priv_user', `
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# Reach sysadm_t
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reach_sysadm($1)
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# Read file_contexts for rpm and get security decisions.
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r_dir_file($1_t, file_context_t)
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can_getsecurity($1_t)
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# Signal and see information about unprivileged user domains.
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allow $1_t unpriv_userdomain:process signal_perms;
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can_ps($1_t, unpriv_userdomain)
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allow $1_t { ttyfile ptyfile tty_device_t }:chr_file getattr;
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# Read /root files if boolean is enabled.
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if (staff_read_sysadm_file) {
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allow $1_t sysadm_home_dir_t:dir { getattr search };
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allow $1_t sysadm_home_t:file { getattr read };
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}
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') dnl priv_user
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full_user_role(user)
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ifdef(`user_canbe_sysadm', `
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reach_sysadm(user)
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role_tty_type_change(user, sysadm)
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')
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# Do not add any rules referring to user_t to this file! That will break
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# support for multiple user roles.
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# a role for staff that allows seeing all domains and control over the user_t
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# domain
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full_user_role(staff)
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priv_user(staff)
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# if adding new user roles make sure you edit the in_user_role macro in
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# macros/user_macros.te to match
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# lots of user programs accidentally search /root, and also the admin often
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# logs in as UID=0 domain=user_t...
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dontaudit unpriv_userdomain { sysadm_home_dir_t staff_home_dir_t }:dir { getattr search };
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#
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# Allow the user roles to transition
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# into each other.
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role_tty_type_change(sysadm, user)
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role_tty_type_change(staff, sysadm)
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role_tty_type_change(sysadm, staff)
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# "ps aux" and "ls -l /dev/pts" make too much noise without this
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dontaudit unpriv_userdomain ptyfile:chr_file getattr;
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