1chkpwd_selinux(8) SELinux Policy chkpwd chkpwd_selinux(8)
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6 chkpwd_selinux - Security Enhanced Linux Policy for the chkpwd pro‐
7 cesses
8
10 Security-Enhanced Linux secures the chkpwd processes via flexible
11 mandatory access control.
12 The chkpwd processes execute with the chkpwd_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 chkpwd_t
20
24 The chkpwd_t SELinux type can be entered via the chkpwd_exec_t file
25 type.
26 The default entrypoint paths for the chkpwd_t domain are the following:
28 /sbin/unix_verify, /sbin/unix_chkpwd, /usr/sbin/validate
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 chkpwd policy is very flexible allowing users to setup their chkpwd
39 processes in as secure a method as possible.
40 The following process types are defined for chkpwd:
42 chkpwd_t
44 Note: semanage permissive -a chkpwd_t can be used to make the process
46 type chkpwd_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. chkpwd
53 policy is extremely flexible and has several booleans that allow you to
54 manipulate the policy and run chkpwd with the tightest access possible.
55 If you want to allow all domains to use other domains file descriptors,
59 you must turn on the allow_domain_fd_use boolean. Enabled by default.
60 setsebool -P allow_domain_fd_use 1
62 If you want to allow Apache to use mod_auth_pam, you must turn on the
66 allow_httpd_mod_auth_pam boolean. Disabled by default.
67 setsebool -P allow_httpd_mod_auth_pam 1
69 If you want to allow confined applications to run with kerberos, you
73 must turn on the allow_kerberos boolean. Enabled by default.
74 setsebool -P allow_kerberos 1
76 If you want to allow sysadm to debug or ptrace all processes, you must
80 turn on the allow_ptrace boolean. Disabled by default.
81 setsebool -P allow_ptrace 1
83 If you want to allow system to run with NIS, you must turn on the
87 allow_ypbind boolean. Disabled by default.
88 setsebool -P allow_ypbind 1
90 If you want to allow all domains to have the kernel load modules, you
94 must turn on the domain_kernel_load_modules boolean. Disabled by
95 default.
96 setsebool -P domain_kernel_load_modules 1
98 If you want to allow all domains to execute in fips_mode, you must turn
102 on the fips_mode boolean. Enabled by default.
103 setsebool -P fips_mode 1
105 If you want to enable reading of urandom for all domains, you must turn
109 on the global_ssp boolean. Disabled by default.
110 setsebool -P global_ssp 1
112 If you want to allow nagios/nrpe to call sudo from NRPE utils scripts,
116 you must turn on the nagios_run_sudo boolean. Disabled by default.
117 setsebool -P nagios_run_sudo 1
119 If you want to allow confined applications to use nscd shared memory,
123 you must turn on the nscd_use_shm boolean. Enabled by default.
124 setsebool -P nscd_use_shm 1
126
130 The SELinux process type chkpwd_t can manage files labeled with the
131 following file types. The paths listed are the default paths for these
132 file types. Note the processes UID still need to have DAC permissions.
133 initrc_tmp_t
135 mnt_t
138 /mnt(/[^/]*)
140 /mnt(/[^/]*)?
141 /rhev(/[^/]*)?
142 /media(/[^/]*)
143 /media(/[^/]*)?
144 /etc/rhgb(/.*)?
145 /media/.hal-.*
146 /net
147 /afs
148 /rhev
149 /misc
150 tmp_t
152 /tmp
154 /usr/tmp
155 /var/tmp
156 /tmp-inst
157 /var/tmp-inst
158 /var/tmp/vi.recover
159
162 SELinux requires files to have an extended attribute to define the file
163 type.
164 You can see the context of a file using the -Z option to ls
166 Policy governs the access confined processes have to these files.
168 SELinux chkpwd policy is very flexible allowing users to setup their
169 chkpwd processes in as secure a method as possible.
170 The following file types are defined for chkpwd:
172 chkpwd_exec_t
176 - Set files with the chkpwd_exec_t type, if you want to transition an
178 executable to the chkpwd_t domain.
179 Paths:
182 /sbin/unix_verify, /sbin/unix_chkpwd, /usr/sbin/validate
183 Note: File context can be temporarily modified with the chcon command.
186 If you want to permanently change the file context you need to use the
187 semanage fcontext command. This will modify the SELinux labeling data‐
188 base. You will need to use restorecon to apply the labels.
189
192 semanage fcontext can also be used to manipulate default file context
193 mappings.
194 semanage permissive can also be used to manipulate whether or not a
196 process type is permissive.
197 semanage module can also be used to enable/disable/install/remove pol‐
199 icy modules.
200 semanage boolean can also be used to manipulate the booleans
202 system-config-selinux is a GUI tool available to customize SELinux pol‐
205 icy settings.
206
209 This manual page was auto-generated using sepolicy manpage .
210
213 selinux(8), chkpwd(8), semanage(8), restorecon(8), chcon(1) , setse‐
214 bool(8)
215chkpwd 15-06-03 chkpwd_selinux(8)