1admin_crontab_selinux(8) SELinux Policy admin_crontab admin_crontab_selinux(8)
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6 admin_crontab_selinux - Security Enhanced Linux Policy for the
7 admin_crontab processes
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10 Security-Enhanced Linux secures the admin_crontab processes via flexi‐
11 ble mandatory access control.
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13 The admin_crontab processes execute with the admin_crontab_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep admin_crontab_t
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24 The admin_crontab_t SELinux type can be entered via the crontab_exec_t
25 file type.
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27 The default entrypoint paths for the admin_crontab_t domain are the
28 following:
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30 /usr/bin/(f)?crontab, /usr/bin/at, /usr/sbin/fcronsighup,
31 /usr/libexec/fcronsighup
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34 SELinux defines process types (domains) for each process running on the
35 system
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37 You can see the context of a process using the -Z option to ps
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39 Policy governs the access confined processes have to files. SELinux
40 admin_crontab policy is very flexible allowing users to setup their
41 admin_crontab processes in as secure a method as possible.
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43 The following process types are defined for admin_crontab:
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45 admin_crontab_t
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47 Note: semanage permissive -a admin_crontab_t can be used to make the
48 process type admin_crontab_t permissive. SELinux does not deny access
49 to permissive process types, but the AVC (SELinux denials) messages are
50 still generated.
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54 SELinux policy is customizable based on least access required.
55 admin_crontab policy is extremely flexible and has several booleans
56 that allow you to manipulate the policy and run admin_crontab with the
57 tightest access possible.
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61 If you want to allow users to resolve user passwd entries directly from
62 ldap rather then using a sssd server, you must turn on the authlo‐
63 gin_nsswitch_use_ldap boolean. Disabled by default.
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65 setsebool -P authlogin_nsswitch_use_ldap 1
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69 If you want to deny any process from ptracing or debugging any other
70 processes, you must turn on the deny_ptrace boolean. Enabled by
71 default.
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73 setsebool -P deny_ptrace 1
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77 If you want to allow any process to mmap any file on system with
78 attribute file_type, you must turn on the domain_can_mmap_files bool‐
79 ean. Enabled by default.
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81 setsebool -P domain_can_mmap_files 1
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85 If you want to allow all domains write to kmsg_device, while kernel is
86 executed with systemd.log_target=kmsg parameter, you must turn on the
87 domain_can_write_kmsg boolean. Disabled by default.
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89 setsebool -P domain_can_write_kmsg 1
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93 If you want to allow all domains to use other domains file descriptors,
94 you must turn on the domain_fd_use boolean. Enabled by default.
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96 setsebool -P domain_fd_use 1
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100 If you want to allow all domains to have the kernel load modules, you
101 must turn on the domain_kernel_load_modules boolean. Disabled by
102 default.
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104 setsebool -P domain_kernel_load_modules 1
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108 If you want to enable extra rules in the cron domain to support fcron,
109 you must turn on the fcron_crond boolean. Disabled by default.
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111 setsebool -P fcron_crond 1
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115 If you want to allow all domains to execute in fips_mode, you must turn
116 on the fips_mode boolean. Enabled by default.
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118 setsebool -P fips_mode 1
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122 If you want to enable reading of urandom for all domains, you must turn
123 on the global_ssp boolean. Disabled by default.
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125 setsebool -P global_ssp 1
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129 If you want to allow confined applications to run with kerberos, you
130 must turn on the kerberos_enabled boolean. Enabled by default.
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132 setsebool -P kerberos_enabled 1
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136 If you want to allow system to run with NIS, you must turn on the
137 nis_enabled boolean. Disabled by default.
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139 setsebool -P nis_enabled 1
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143 If you want to allow confined applications to use nscd shared memory,
144 you must turn on the nscd_use_shm boolean. Disabled by default.
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146 setsebool -P nscd_use_shm 1
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150 If you want to support ecryptfs home directories, you must turn on the
151 use_ecryptfs_home_dirs boolean. Disabled by default.
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153 setsebool -P use_ecryptfs_home_dirs 1
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157 If you want to support fusefs home directories, you must turn on the
158 use_fusefs_home_dirs boolean. Disabled by default.
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160 setsebool -P use_fusefs_home_dirs 1
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164 If you want to support NFS home directories, you must turn on the
165 use_nfs_home_dirs boolean. Disabled by default.
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167 setsebool -P use_nfs_home_dirs 1
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171 If you want to support SAMBA home directories, you must turn on the
172 use_samba_home_dirs boolean. Disabled by default.
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174 setsebool -P use_samba_home_dirs 1
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179 The SELinux process type admin_crontab_t can manage files labeled with
180 the following file types. The paths listed are the default paths for
181 these file types. Note the processes UID still need to have DAC per‐
182 missions.
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184 admin_crontab_tmp_t
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187 cgroup_t
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189 /sys/fs/cgroup
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191 faillog_t
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193 /var/log/btmp.*
194 /var/log/faillog.*
195 /var/log/tallylog.*
196 /var/run/faillock(/.*)?
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198 security_t
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200 /selinux
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202 user_cron_spool_t
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204 /var/spool/at(/.*)?
205 /var/spool/cron
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207 user_tmp_t
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209 /dev/shm/mono.*
210 /var/run/user(/.*)?
211 /tmp/.X11-unix(/.*)?
212 /tmp/.ICE-unix(/.*)?
213 /dev/shm/pulse-shm.*
214 /tmp/.X0-lock
215 /tmp/hsperfdata_root
216 /var/tmp/hsperfdata_root
217 /home/[^/]+/tmp
218 /home/[^/]+/.tmp
219 /tmp/gconfd-[^/]+
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221 var_auth_t
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223 /var/ace(/.*)?
224 /var/rsa(/.*)?
225 /var/lib/abl(/.*)?
226 /var/lib/rsa(/.*)?
227 /var/lib/pam_ssh(/.*)?
228 /var/run/pam_ssh(/.*)?
229 /var/lib/pam_shield(/.*)?
230 /var/opt/quest/vas/vasd(/.*)?
231 /var/lib/google-authenticator(/.*)?
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235 semanage fcontext can also be used to manipulate default file context
236 mappings.
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238 semanage permissive can also be used to manipulate whether or not a
239 process type is permissive.
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241 semanage module can also be used to enable/disable/install/remove pol‐
242 icy modules.
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244 semanage boolean can also be used to manipulate the booleans
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247 system-config-selinux is a GUI tool available to customize SELinux pol‐
248 icy settings.
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252 This manual page was auto-generated using sepolicy manpage .
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256 selinux(8), admin_crontab(8), semanage(8), restorecon(8), chcon(1),
257 sepolicy(8) , setsebool(8)
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261admin_crontab 19-04-25 admin_crontab_selinux(8)