system_cronjob_selinux(8)

1system_cronjob_selinux(8)SELinux Policy system_cronjobsystem_cronjob_selinux(8)
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NAME

6       system_cronjob_selinux  -  Security  Enhanced Linux Policy for the sys‐
7       tem_cronjob processes
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DESCRIPTION

10       Security-Enhanced Linux secures the system_cronjob processes via flexi‐
11       ble mandatory access control.
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13       The  system_cronjob processes execute with the system_cronjob_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 system_cronjob_t
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ENTRYPOINTS

24       The   system_cronjob_t  SELinux  type  can  be  entered  via  the  sys‐
25       tem_cron_spool_t, anacron_exec_t, usr_t, bin_t,  shell_exec_t,  cifs_t,
26       fusefs_t, nfs_t file types.
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28       The  default  entrypoint  paths for the system_cronjob_t domain are the
29       following:
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31       All executeables with the default executable label, usually  stored  in
32       /usr/bin  and  /usr/sbin.  /etc/cron.d(/.*)?, /var/spool/anacron(/.*)?,
33       /etc/crontab,   /var/spool/fcron/systab,   /var/spool/fcron/new.systab,
34       /var/spool/fcron/systab.orig,   /usr/sbin/anacron,   /opt/.*,  /usr/.*,
35       /emul/.*,   /export(/.*)?,   /ostree(/.*)?,   /usr/doc(/.*)?/lib(/.*)?,
36       /usr/inclu.e(/.*)?,                               /usr/share/rpm(/.*)?,
37       /usr/share/doc(/.*)?/README.*,           /usr/lib/modules(/.*)/vmlinuz,
38       /usr/lib/modules(/.*)/initramfs.img,           /usr/lib/sysimage(/.*)?,
39       /usr/lib/ostree-boot(/.*)?, /opt, /usr, /emul, /bin/d?ash,  /bin/ksh.*,
40       /bin/zsh.*,  /usr/bin/d?ash,  /usr/bin/ksh.*, /usr/bin/zsh.*, /bin/esh,
41       /bin/bash,  /bin/fish,  /bin/mksh,  /bin/sash,  /bin/tcsh,   /bin/yash,
42       /bin/bash2,  /usr/bin/esh, /sbin/nologin, /usr/bin/bash, /usr/bin/fish,
43       /usr/bin/mksh,     /usr/bin/sash,     /usr/bin/tcsh,     /usr/bin/yash,
44       /usr/bin/bash2,   /usr/sbin/sesh,   /usr/sbin/smrsh,  /usr/bin/scponly,
45       /usr/libexec/sesh,        /usr/sbin/nologin,        /usr/bin/git-shell,
46       /usr/sbin/scponlyc,   /usr/libexec/sudo/sesh,  /usr/bin/cockpit-bridge,
47       /usr/libexec/cockpit-agent,            /usr/libexec/git-core/git-shell,
48       /var/run/user/[^/]*/gvfs
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PROCESS TYPES

51       SELinux defines process types (domains) for each process running on the
52       system
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54       You can see the context of a process using the -Z option to ps
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56       Policy governs the access confined processes have  to  files.   SELinux
57       system_cronjob  policy  is  very flexible allowing users to setup their
58       system_cronjob processes in as secure a method as possible.
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60       The following process types are defined for system_cronjob:
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62       system_cronjob_t
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64       Note: semanage permissive -a system_cronjob_t can be used to  make  the
65       process  type system_cronjob_t permissive. SELinux does not deny access
66       to permissive process types, but the AVC (SELinux denials) messages are
67       still generated.
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BOOLEANS

71       SELinux  policy  is  customizable based on least access required.  sys‐
72       tem_cronjob policy is extremely flexible and has several booleans  that
73       allow  you  to  manipulate  the  policy and run system_cronjob with the
74       tightest access possible.
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78       If you want to allow users to resolve user passwd entries directly from
79       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
80       gin_nsswitch_use_ldap boolean. Disabled by default.
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82       setsebool -P authlogin_nsswitch_use_ldap 1
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86       If you want to allow system cron jobs to relabel filesystem for restor‐
87       ing  file  contexts,  you  must  turn  on the cron_can_relabel boolean.
88       Enabled by default.
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90       setsebool -P cron_can_relabel 1
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94       If you want to allow system cronjob to be executed on on NFS,  CIFS  or
95       FUSE  filesystem,  you  must turn on the cron_system_cronjob_use_shares
96       boolean. Disabled by default.
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98       setsebool -P cron_system_cronjob_use_shares 1
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102       If you want to deny user domains applications to map a memory region as
103       both  executable  and  writable,  this  is dangerous and the executable
104       should be reported in bugzilla, you must turn on the deny_execmem bool‐
105       ean. Enabled by default.
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107       setsebool -P deny_execmem 1
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111       If you want to allow all domains to execute in fips_mode, you must turn
112       on the fips_mode boolean. Enabled by default.
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114       setsebool -P fips_mode 1
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118       If you want to allow confined applications to run  with  kerberos,  you
119       must turn on the kerberos_enabled boolean. Enabled by default.
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121       setsebool -P kerberos_enabled 1
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125       If  you  want  to control the ability to mmap a low area of the address
126       space, as configured by /proc/sys/vm/mmap_min_addr, you  must  turn  on
127       the mmap_low_allowed boolean. Disabled by default.
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129       setsebool -P mmap_low_allowed 1
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133       If  you  want  to  allow  system  to run with NIS, you must turn on the
134       nis_enabled boolean. Disabled by default.
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136       setsebool -P nis_enabled 1
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140       If you want to allow confined applications to use nscd  shared  memory,
141       you must turn on the nscd_use_shm boolean. Disabled by default.
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143       setsebool -P nscd_use_shm 1
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147       If  you  want  to  disable  kernel module loading, you must turn on the
148       secure_mode_insmod boolean. Enabled by default.
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150       setsebool -P secure_mode_insmod 1
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154       If you want to allow unconfined executables to make their  heap  memory
155       executable.   Doing  this  is  a  really bad idea. Probably indicates a
156       badly coded executable, but could indicate an attack.  This  executable
157       should   be   reported  in  bugzilla,  you  must  turn  on  the  selin‐
158       uxuser_execheap boolean. Disabled by default.
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160       setsebool -P selinuxuser_execheap 1
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164       If you want to allow unconfined executables to make  their  stack  exe‐
165       cutable.   This  should  never, ever be necessary. Probably indicates a
166       badly coded executable, but could indicate an attack.  This  executable
167       should  be reported in bugzilla, you must turn on the selinuxuser_exec‐
168       stack boolean. Enabled by default.
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170       setsebool -P selinuxuser_execstack 1
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MANAGED FILES

175       The SELinux process type system_cronjob_t can manage files labeled with
176       the  following  file types.  The paths listed are the default paths for
177       these file types.  Note the processes UID still need to have  DAC  per‐
178       missions.
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180       file_type
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182            all files on the system
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COMMANDS

186       semanage  fcontext  can also be used to manipulate default file context
187       mappings.
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189       semanage permissive can also be used to manipulate  whether  or  not  a
190       process type is permissive.
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192       semanage  module can also be used to enable/disable/install/remove pol‐
193       icy modules.
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195       semanage boolean can also be used to manipulate the booleans
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198       system-config-selinux is a GUI tool available to customize SELinux pol‐
199       icy settings.
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AUTHOR

203       This manual page was auto-generated using sepolicy manpage .
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