1secadm_selinux(8) secadm SELinux Policy documentation secadm_selinux(8)
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6 secadm_r - Security administrator role - Security Enhanced Linux Policy
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10 SELinux supports Roles Based Access Control (RBAC), some Linux roles
11 are login roles, while other roles need to be transition into.
12 Note: Examples in this man page will use the staff_u SELinux user.
14 Non login roles are usually used for administrative tasks. For example,
16 tasks that require root privileges. Roles control which types a user
17 can run processes with. Roles often have default types assigned to
18 them.
19 The default type for the secadm_r role is secadm_t.
21 The newrole program to transition directly to this role.
23 newrole -r secadm_r -t secadm_t
25 sudo is the preferred method to do transition from one role to another.
27 You setup sudo to transition to secadm_r by adding a similar line to
28 the /etc/sudoers file.
29 USERNAME ALL=(ALL) ROLE=secadm_r TYPE=secadm_t COMMAND
31 sudo will run COMMAND as staff_u:secadm_r:secadm_t:LEVEL
33 When using a non login role, you need to setup SELinux so that your
35 SELinux user can reach secadm_r role.
36 Execute the following to see all of the assigned SELinux roles:
38 semanage user -l
40 You need to add secadm_r to the staff_u user. You could setup the
42 staff_u user to be able to use the secadm_r role with a command like:
43 $ semanage user -m -R 'staff_r system_r secadm_r' staff_u
45 SELinux policy also controls which roles can transition to a different
49 role. You can list these rules using the following command.
50 search --role_allow
52 SELinux policy allows the sysadm_r, staff_r, auditadm_r roles can tran‐
54 sition to the secadm_r role.
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59 SELinux policy is customizable based on least access required. secadm
60 policy is extremely flexible and has several booleans that allow you to
61 manipulate the policy and run secadm with the tightest access possible.
62 If you want to deny user domains applications to map a memory region as
66 both executable and writable, this is dangerous and the executable
67 should be reported in bugzilla, you must turn on the deny_execmem bool‐
68 ean. Enabled by default.
69 setsebool -P deny_execmem 1
71 If you want to deny any process from ptracing or debugging any other
75 processes, you must turn on the deny_ptrace boolean. Enabled by de‐
76 fault.
77 setsebool -P deny_ptrace 1
79 If you want to allow all domains to execute in fips_mode, you must turn
83 on the fips_mode boolean. Enabled by default.
84 setsebool -P fips_mode 1
86 If you want to allow system to run with NIS, you must turn on the
90 nis_enabled boolean. Disabled by default.
91 setsebool -P nis_enabled 1
93 If you want to allow unconfined executables to make their stack exe‐
97 cutable. This should never, ever be necessary. Probably indicates a
98 badly coded executable, but could indicate an attack. This executable
99 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
100 stack boolean. Enabled by default.
101 setsebool -P selinuxuser_execstack 1
103
107 The SELinux process type secadm_t can manage files labeled with the
108 following file types. The paths listed are the default paths for these
109 file types. Note the processes UID still need to have DAC permissions.
110 boolean_type
112 default_context_t
115 /etc/selinux/([^/]*/)?contexts(/.*)?
117 /root/.default_contexts
118 dosfs_t
120 krb5_host_rcache_t
123 /var/tmp/krb5_0.rcache2
125 /var/cache/krb5rcache(/.*)?
126 /var/tmp/nfs_0
127 /var/tmp/DNS_25
128 /var/tmp/host_0
129 /var/tmp/imap_0
130 /var/tmp/HTTP_23
131 /var/tmp/HTTP_48
132 /var/tmp/ldap_55
133 /var/tmp/ldap_487
134 /var/tmp/ldapmap1_0
135 screen_home_t
137 /root/.screen(/.*)?
139 /home/[^/]+/.screen(/.*)?
140 /home/[^/]+/.screenrc
141 /home/[^/]+/.tmux.conf
142 security_t
144 /selinux
146 selinux_config_t
148 /etc/selinux(/.*)?
150 /etc/selinux/([^/]*/)?seusers
151 /etc/selinux/([^/]*/)?users(/.*)?
152 /etc/selinux/([^/]*/)?setrans.conf
153 /var/lib/sepolgen(/.*)?
154 selinux_login_config_t
156 /etc/selinux/([^/]*/)?logins(/.*)?
158 semanage_store_t
160 /etc/selinux/([^/]*/)?policy(/.*)?
162 /etc/selinux/(minimum|mls|targeted)/active(/.*)?
163 /etc/selinux/([^/]*/)?modules/(active|tmp|previous)(/.*)?
164 /var/lib/selinux(/.*)?
165 /etc/share/selinux/mls(/.*)?
166 /etc/share/selinux/targeted(/.*)?
167 systemd_passwd_var_run_t
169 /var/run/systemd/ask-password(/.*)?
171 /var/run/systemd/ask-password-block(/.*)?
172 user_tmp_type
174 all user tmp files
176
179 semanage fcontext can also be used to manipulate default file context
180 mappings.
181 semanage permissive can also be used to manipulate whether or not a
183 process type is permissive.
184 semanage module can also be used to enable/disable/install/remove pol‐
186 icy modules.
187 semanage boolean can also be used to manipulate the booleans
189 system-config-selinux is a GUI tool available to customize SELinux pol‐
192 icy settings.
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196 This manual page was auto-generated using sepolicy manpage .
197
200 selinux(8), secadm(8), semanage(8), restorecon(8), chcon(1), sepol‐
201 icy(8), setsebool(8), secadm_screen_selinux(8),
202 secadm_screen_selinux(8), secadm_su_selinux(8), secadm_su_selinux(8),
203 secadm_sudo_selinux(8), secadm_sudo_selinux(8)
204mgrepl@redhat.com secadm secadm_selinux(8)