1passwd_selinux(8) SELinux Policy passwd passwd_selinux(8)
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6 passwd_selinux - Security Enhanced Linux Policy for the passwd pro‐
7 cesses
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10 Security-Enhanced Linux secures the passwd processes via flexible
11 mandatory access control.
12 The passwd processes execute with the passwd_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 passwd_t
20
24 The passwd_t SELinux type can be entered via the passwd_exec_t file
25 type.
26 The default entrypoint paths for the passwd_t domain are the following:
28 /usr/bin/chage, /usr/bin/passwd
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 passwd policy is very flexible allowing users to setup their passwd
39 processes in as secure a method as possible.
40 The following process types are defined for passwd:
42 passwd_t
44 Note: semanage permissive -a passwd_t can be used to make the process
46 type passwd_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. passwd
53 policy is extremely flexible and has several booleans that allow you to
54 manipulate the policy and run passwd 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 confined applications to run with kerberos, you
66 must turn on the allow_kerberos boolean. Enabled by default.
67 setsebool -P allow_kerberos 1
69 If you want to allow sysadm to debug or ptrace all processes, you must
73 turn on the allow_ptrace boolean. Disabled by default.
74 setsebool -P allow_ptrace 1
76 If you want to allow system to run with NIS, you must turn on the
80 allow_ypbind boolean. Disabled by default.
81 setsebool -P allow_ypbind 1
83 If you want to allow all domains to have the kernel load modules, you
87 must turn on the domain_kernel_load_modules boolean. Disabled by
88 default.
89 setsebool -P domain_kernel_load_modules 1
91 If you want to allow all domains to execute in fips_mode, you must turn
95 on the fips_mode boolean. Enabled by default.
96 setsebool -P fips_mode 1
98 If you want to enable reading of urandom for all domains, you must turn
102 on the global_ssp boolean. Disabled by default.
103 setsebool -P global_ssp 1
105 If you want to allow confined applications to use nscd shared memory,
109 you must turn on the nscd_use_shm boolean. Enabled by default.
110 setsebool -P nscd_use_shm 1
112 If you want to allow samba to act as the domain controller, add users,
116 groups and change passwords, you must turn on the samba_domain_con‐
117 troller boolean. Disabled by default.
118 setsebool -P samba_domain_controller 1
120
124 The SELinux process type passwd_t can manage files labeled with the
125 following file types. The paths listed are the default paths for these
126 file types. Note the processes UID still need to have DAC permissions.
127 etc_t
129 /etc/.*
131 /var/db/.*.db
132 /usr/etc(/.*)?
133 /var/ftp/etc(/.*)?
134 /usr/local/etc(/.*)?
135 /var/lib/openshift/.limits.d(/.*)?
136 /var/lib/openshift/.openshift-proxy.d(/.*)?
137 /var/lib/openshift/.stickshift-proxy.d(/.*)?
138 /var/lib/stickshift/.limits.d(/.*)?
139 /var/lib/stickshift/.stickshift-proxy.d(/.*)?
140 /var/named/chroot/etc(/.*)?
141 /etc/ipsec.d/examples(/.*)?
142 /var/spool/postfix/etc(/.*)?
143 /etc
144 /etc/cups/client.conf
145 faillog_t
147 /var/log/btmp.*
149 /var/log/faillog.*
150 /var/log/tallylog.*
151 /var/run/faillock(/.*)?
152 initrc_tmp_t
154 mnt_t
157 /mnt(/[^/]*)
159 /mnt(/[^/]*)?
160 /rhev(/[^/]*)?
161 /media(/[^/]*)
162 /media(/[^/]*)?
163 /etc/rhgb(/.*)?
164 /media/.hal-.*
165 /net
166 /afs
167 /rhev
168 /misc
169 pcscd_var_run_t
171 /var/run/pcscd.events(/.*)?
173 /var/run/pcscd.pid
174 /var/run/pcscd.pub
175 /var/run/pcscd.comm
176 security_t
178 shadow_t
181 /etc/shadow.*
183 /etc/gshadow.*
184 /var/db/shadow.*
185 /etc/passwd.adjunct.*
186 /etc/.pwd.lock
187 /etc/group.lock
188 /etc/passwd.lock
189 tmp_t
191 /tmp
193 /usr/tmp
194 /var/tmp
195 /tmp-inst
196 /var/tmp-inst
197 /var/tmp/vi.recover
198
201 SELinux requires files to have an extended attribute to define the file
202 type.
203 You can see the context of a file using the -Z option to ls
205 Policy governs the access confined processes have to these files.
207 SELinux passwd policy is very flexible allowing users to setup their
208 passwd processes in as secure a method as possible.
209 The following file types are defined for passwd:
211 passwd_exec_t
215 - Set files with the passwd_exec_t type, if you want to transition an
217 executable to the passwd_t domain.
218 Paths:
221 /usr/bin/chage, /usr/bin/passwd
222 Note: File context can be temporarily modified with the chcon command.
225 If you want to permanently change the file context you need to use the
226 semanage fcontext command. This will modify the SELinux labeling data‐
227 base. You will need to use restorecon to apply the labels.
228
231 semanage fcontext can also be used to manipulate default file context
232 mappings.
233 semanage permissive can also be used to manipulate whether or not a
235 process type is permissive.
236 semanage module can also be used to enable/disable/install/remove pol‐
238 icy modules.
239 semanage boolean can also be used to manipulate the booleans
241 system-config-selinux is a GUI tool available to customize SELinux pol‐
244 icy settings.
245
248 This manual page was auto-generated using sepolicy manpage .
249
252 selinux(8), passwd(8), semanage(8), restorecon(8), chcon(1) , setse‐
253 bool(8)
254passwd 15-06-03 passwd_selinux(8)