1pwauth_selinux(8) SELinux Policy pwauth pwauth_selinux(8)
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6 pwauth_selinux - Security Enhanced Linux Policy for the pwauth pro‐
7 cesses
8
10 Security-Enhanced Linux secures the pwauth processes via flexible
11 mandatory access control.
12 The pwauth processes execute with the pwauth_t SELinux type. You can
14 check if you have these processes running by executing the ps command
15 with the -Z qualifier.
16 For example:
18 ps -eZ | grep pwauth_t
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24 The pwauth_t SELinux type can be entered via the pwauth_exec_t file
25 type.
26 The default entrypoint paths for the pwauth_t domain are the following:
28 /usr/bin/pwauth
30
32 SELinux defines process types (domains) for each process running on the
33 system
34 You can see the context of a process using the -Z option to ps
36 Policy governs the access confined processes have to files. SELinux
38 pwauth policy is very flexible allowing users to setup their pwauth
39 processes in as secure a method as possible.
40 The following process types are defined for pwauth:
42 pwauth_t
44 Note: semanage permissive -a pwauth_t can be used to make the process
46 type pwauth_t permissive. SELinux does not deny access to permissive
47 process types, but the AVC (SELinux denials) messages are still gener‐
48 ated.
49
52 SELinux policy is customizable based on least access required. pwauth
53 policy is extremely flexible and has several booleans that allow you to
54 manipulate the policy and run pwauth with the tightest access possible.
55 If you want to allow users to resolve user passwd entries directly from
59 ldap rather then using a sssd server, you must turn on the authlo‐
60 gin_nsswitch_use_ldap boolean. Disabled by default.
61 setsebool -P authlogin_nsswitch_use_ldap 1
63 If you want to deny any process from ptracing or debugging any other
67 processes, you must turn on the deny_ptrace boolean. Enabled by
68 default.
69 setsebool -P deny_ptrace 1
71 If you want to allow any process to mmap any file on system with
75 attribute file_type, you must turn on the domain_can_mmap_files bool‐
76 ean. Enabled by default.
77 setsebool -P domain_can_mmap_files 1
79 If you want to allow all domains write to kmsg_device, while kernel is
83 executed with systemd.log_target=kmsg parameter, you must turn on the
84 domain_can_write_kmsg boolean. Disabled by default.
85 setsebool -P domain_can_write_kmsg 1
87 If you want to allow all domains to use other domains file descriptors,
91 you must turn on the domain_fd_use boolean. Enabled by default.
92 setsebool -P domain_fd_use 1
94 If you want to allow all domains to have the kernel load modules, you
98 must turn on the domain_kernel_load_modules boolean. Disabled by
99 default.
100 setsebool -P domain_kernel_load_modules 1
102 If you want to allow all domains to execute in fips_mode, you must turn
106 on the fips_mode boolean. Enabled by default.
107 setsebool -P fips_mode 1
109 If you want to enable reading of urandom for all domains, you must turn
113 on the global_ssp boolean. Disabled by default.
114 setsebool -P global_ssp 1
116 If you want to allow confined applications to run with kerberos, you
120 must turn on the kerberos_enabled boolean. Enabled by default.
121 setsebool -P kerberos_enabled 1
123 If you want to allow system to run with NIS, you must turn on the
127 nis_enabled boolean. Disabled by default.
128 setsebool -P nis_enabled 1
130 If you want to allow confined applications to use nscd shared memory,
134 you must turn on the nscd_use_shm boolean. Disabled by default.
135 setsebool -P nscd_use_shm 1
137
141 The SELinux process type pwauth_t can manage files labeled with the
142 following file types. The paths listed are the default paths for these
143 file types. Note the processes UID still need to have DAC permissions.
144 lastlog_t
146 /var/log/lastlog.*
148 pwauth_var_run_t
150 /var/run/pwauth.lock
152
155 SELinux requires files to have an extended attribute to define the file
156 type.
157 You can see the context of a file using the -Z option to ls
159 Policy governs the access confined processes have to these files.
161 SELinux pwauth policy is very flexible allowing users to setup their
162 pwauth processes in as secure a method as possible.
163 STANDARD FILE CONTEXT
165 SELinux defines the file context types for the pwauth, if you wanted to
167 store files with these types in a diffent paths, you need to execute
168 the semanage command to sepecify alternate labeling and then use
169 restorecon to put the labels on disk.
170 semanage fcontext -a -t pwauth_var_run_t '/srv/mypwauth_content(/.*)?'
172 restorecon -R -v /srv/mypwauth_content
173 Note: SELinux often uses regular expressions to specify labels that
175 match multiple files.
176 The following file types are defined for pwauth:
178 pwauth_exec_t
182 - Set files with the pwauth_exec_t type, if you want to transition an
184 executable to the pwauth_t domain.
185 pwauth_var_run_t
189 - Set files with the pwauth_var_run_t type, if you want to store the
191 pwauth files under the /run or /var/run directory.
192 Note: File context can be temporarily modified with the chcon command.
196 If you want to permanently change the file context you need to use the
197 semanage fcontext command. This will modify the SELinux labeling data‐
198 base. You will need to use restorecon to apply the labels.
199
202 semanage fcontext can also be used to manipulate default file context
203 mappings.
204 semanage permissive can also be used to manipulate whether or not a
206 process type is permissive.
207 semanage module can also be used to enable/disable/install/remove pol‐
209 icy modules.
210 semanage boolean can also be used to manipulate the booleans
212 system-config-selinux is a GUI tool available to customize SELinux pol‐
215 icy settings.
216
219 This manual page was auto-generated using sepolicy manpage .
220
223 selinux(8), pwauth(8), semanage(8), restorecon(8), chcon(1), sepol‐
224 icy(8) , setsebool(8)
225pwauth 19-04-25 pwauth_selinux(8)