httpd_sys_script_selinuxSELinux Policy httpd_sys_schttpd_sys_script_selinux(8)NAMEhttpd_sys_script_selinux - Security Enhanced Linux Policy for the
httpd_sys_script processes
DESCRIPTION
Security-Enhanced Linux secures the httpd_sys_script processes via
flexible mandatory access control.
The httpd_sys_script processes execute with the httpd_sys_script_t
SELinux type. You can check if you have these processes running by exe‐
cuting the ps command with the -Z qualifier.
For example:
ps -eZ | grep httpd_sys_script_t
ENTRYPOINTS
The httpd_sys_script_t SELinux type can be entered via the
httpd_sys_content_t, httpd_sys_script_exec_t, shell_exec_t, cifs_t,
nfs_t, httpd_sys_content_t, httpd_sys_script_exec_t, httpdcontent file
types.
The default entrypoint paths for the httpd_sys_script_t domain are the
following:
/srv/([^/]*/)?www(/.*)?, /var/www(/.*)?, /etc/htdig(/.*)?,
/srv/gallery2(/.*)?, /var/lib/trac(/.*)?, /var/lib/htdig(/.*)?,
/var/www/icons(/.*)?, /usr/share/glpi(/.*)?, /usr/share/htdig(/.*)?,
/usr/share/drupal.*, /usr/share/z-push(/.*)?, /var/www/svn/conf(/.*)?,
/usr/share/icecast(/.*)?, /var/lib/cacti/rra(/.*)?,
/usr/share/ntop/html(/.*)?, /usr/share/doc/ghc/html(/.*)?,
/usr/share/openca/htdocs(/.*)?, /usr/share/selinux-pol‐
icy[^/]*/html(/.*)?, /usr/.*.cgi, /opt/.*.cgi, /var/www/[^/]*/cgi-
bin(/.*)?, /var/www/perl(/.*)?, /var/www/html/[^/]*/cgi-bin(/.*)?,
/usr/lib/cgi-bin(/.*)?, /var/www/cgi-bin(/.*)?,
/var/www/svn/hooks(/.*)?, /usr/share/wordpress/.*.php, /usr/share/word‐
press/wp-includes/.*.php, /usr/share/wordpress-mu/wp-config.php,
/bin/d?ash, /bin/zsh.*, /bin/ksh.*, /usr/bin/d?ash, /usr/bin/zsh.*,
/usr/bin/ksh.*, /bin/esh, /bin/mksh, /bin/sash, /bin/tcsh, /bin/yash,
/bin/bash, /bin/fish, /bin/bash2, /usr/bin/esh, /usr/bin/sash,
/usr/bin/tcsh, /usr/bin/yash, /usr/bin/fish, /usr/bin/mksh,
/usr/bin/bash, /sbin/nologin, /usr/sbin/sesh, /usr/bin/bash2,
/usr/sbin/smrsh, /usr/bin/scponly, /usr/sbin/nologin,
/usr/libexec/sesh, /usr/sbin/scponlyc, /usr/bin/git-shell,
/usr/libexec/git-core/git-shell, /srv/([^/]*/)?www(/.*)?,
/var/www(/.*)?, /etc/htdig(/.*)?, /srv/gallery2(/.*)?,
/var/lib/trac(/.*)?, /var/lib/htdig(/.*)?, /var/www/icons(/.*)?,
/usr/share/glpi(/.*)?, /usr/share/htdig(/.*)?, /usr/share/drupal.*,
/usr/share/z-push(/.*)?, /var/www/svn/conf(/.*)?, /usr/share/ice‐
cast(/.*)?, /var/lib/cacti/rra(/.*)?, /usr/share/ntop/html(/.*)?,
/usr/share/doc/ghc/html(/.*)?, /usr/share/openca/htdocs(/.*)?,
/usr/share/selinux-policy[^/]*/html(/.*)?, /usr/.*.cgi, /opt/.*.cgi,
/var/www/[^/]*/cgi-bin(/.*)?, /var/www/perl(/.*)?,
/var/www/html/[^/]*/cgi-bin(/.*)?, /usr/lib/cgi-bin(/.*)?,
/var/www/cgi-bin(/.*)?, /var/www/svn/hooks(/.*)?, /usr/share/word‐
press/.*.php, /usr/share/wordpress/wp-includes/.*.php, /usr/share/word‐
press-mu/wp-config.php
PROCESS TYPES
SELinux defines process types (domains) for each process running on the
system
You can see the context of a process using the -Z option to ps
Policy governs the access confined processes have to files. SELinux
httpd_sys_script policy is very flexible allowing users to setup their
httpd_sys_script processes in as secure a method as possible.
The following process types are defined for httpd_sys_script:
httpd_sys_script_t
Note: semanage permissive -a httpd_sys_script_t can be used to make the
process type httpd_sys_script_t permissive. SELinux does not deny
access to permissive process types, but the AVC (SELinux denials) mes‐
sages are still generated.
BOOLEANS
SELinux policy is customizable based on least access required.
httpd_sys_script policy is extremely flexible and has several booleans
that allow you to manipulate the policy and run httpd_sys_script with
the tightest access possible.
If you want to allow users to resolve user passwd entries directly from
ldap rather then using a sssd server, you must turn on the authlo‐
gin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to deny any process from ptracing or debugging any other
processes, you must turn on the deny_ptrace boolean. Enabled by
default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors,
you must turn on the domain_fd_use boolean. Enabled by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you
must turn on the domain_kernel_load_modules boolean. Disabled by
default.
setsebool -P domain_kernel_load_modules 1
If you want to allow all domains to execute in fips_mode, you must turn
on the fips_mode boolean. Enabled by default.
setsebool -P fips_mode 1
If you want to enable reading of urandom for all domains, you must turn
on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow httpd to use built in scripting (usually php), you
must turn on the httpd_builtin_scripting boolean. Disabled by default.
setsebool -P httpd_builtin_scripting 1
If you want to allow HTTPD scripts and modules to connect to the net‐
work using TCP, you must turn on the httpd_can_network_connect boolean.
Disabled by default.
setsebool -P httpd_can_network_connect 1
If you want to allow HTTPD scripts and modules to connect to databases
over the network, you must turn on the httpd_can_network_connect_db
boolean. Disabled by default.
setsebool -P httpd_can_network_connect_db 1
If you want to allow http daemon to send mail, you must turn on the
httpd_can_sendmail boolean. Disabled by default.
setsebool -P httpd_can_sendmail 1
If you want to allow httpd cgi support, you must turn on the
httpd_enable_cgi boolean. Disabled by default.
setsebool -P httpd_enable_cgi 1
If you want to allow httpd to read home directories, you must turn on
the httpd_enable_homedirs boolean. Disabled by default.
setsebool -P httpd_enable_homedirs 1
If you want to allow httpd scripts and modules execmem/execstack, you
must turn on the httpd_execmem boolean. Disabled by default.
setsebool -P httpd_execmem 1
If you want to allow httpd to read user content, you must turn on the
httpd_read_user_content boolean. Disabled by default.
setsebool -P httpd_read_user_content 1
If you want to allow HTTPD to run SSI executables in the same domain as
system CGI scripts, you must turn on the httpd_ssi_exec boolean. Dis‐
abled by default.
setsebool -P httpd_ssi_exec 1
If you want to allow Apache to execute tmp content, you must turn on
the httpd_tmp_exec boolean. Disabled by default.
setsebool -P httpd_tmp_exec 1
If you want to unify HTTPD handling of all content files, you must turn
on the httpd_unified boolean. Disabled by default.
setsebool -P httpd_unified 1
If you want to allow httpd to access cifs file systems, you must turn
on the httpd_use_cifs boolean. Disabled by default.
setsebool -P httpd_use_cifs 1
If you want to allow httpd to access FUSE file systems, you must turn
on the httpd_use_fusefs boolean. Disabled by default.
setsebool -P httpd_use_fusefs 1
If you want to allow httpd to access nfs file systems, you must turn on
the httpd_use_nfs boolean. Disabled by default.
setsebool -P httpd_use_nfs 1
If you want to allow httpd to access openstack ports, you must turn on
the httpd_use_openstack boolean. Disabled by default.
setsebool -P httpd_use_openstack 1
If you want to allow confined applications to run with kerberos, you
must turn on the kerberos_enabled boolean. Enabled by default.
setsebool -P kerberos_enabled 1
If you want to allow system to run with NIS, you must turn on the
nis_enabled boolean. Disabled by default.
setsebool -P nis_enabled 1
If you want to allow confined applications to use nscd shared memory,
you must turn on the nscd_use_shm boolean. Disabled by default.
setsebool -P nscd_use_shm 1
If you want to allow unprivileged users to execute DDL statement, you
must turn on the postgresql_selinux_users_ddl boolean. Enabled by
default.
setsebool -P postgresql_selinux_users_ddl 1
If you want to support NFS home directories, you must turn on the
use_nfs_home_dirs boolean. Disabled by default.
setsebool -P use_nfs_home_dirs 1
If you want to support SAMBA home directories, you must turn on the
use_samba_home_dirs boolean. Disabled by default.
setsebool -P use_samba_home_dirs 1
NSSWITCH DOMAIN
If you want to allow users to resolve user passwd entries directly from
ldap rather then using a sssd server for the httpd_sys_script_t, you
must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the
httpd_sys_script_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
MANAGED FILES
The SELinux process type httpd_sys_script_t can manage files labeled
with the following file types. The paths listed are the default paths
for these file types. Note the processes UID still need to have DAC
permissions.
anon_inodefs_t
cifs_t
fusefs_t
/var/run/[^/]*/gvfs
httpd_sys_rw_content_t
/etc/glpi(/.*)?
/etc/horde(/.*)?
/etc/drupal.*
/etc/z-push(/.*)?
/var/lib/svn(/.*)?
/var/www/svn(/.*)?
/etc/owncloud(/.*)?
/var/www/html(/.*)?/uploads(/.*)?
/var/www/html(/.*)?/wp-content(/.*)?
/var/www/html(/.*)?/sites/default/files(/.*)?
/var/www/html(/.*)?/sites/default/settings.php
/etc/mock/koji(/.*)?
/var/lib/drupal.*
/etc/zabbix/web(/.*)?
/var/log/z-push(/.*)?
/var/spool/gosa(/.*)?
/var/lib/moodle(/.*)?
/etc/WebCalendar(/.*)?
/usr/share/joomla(/.*)?
/var/lib/dokuwiki(/.*)?
/var/lib/owncloud(/.*)?
/var/spool/viewvc(/.*)?
/var/lib/pootle/po(/.*)?
/var/www/moodledata(/.*)?
/srv/gallery2/smarty(/.*)?
/var/www/moodle/data(/.*)?
/var/www/gallery/albums(/.*)?
/var/www/html/owncloud/data(/.*)?
/usr/share/wordpress-mu/wp-content(/.*)?
/usr/share/wordpress/wp-content/uploads(/.*)?
/usr/share/wordpress/wp-content/upgrade(/.*)?
/var/www/html/configuration.php
httpd_tmp_t
/var/run/user/apache(/.*)?
/var/www/openshift/console/tmp(/.*)?
httpdcontent
nfs_t
public_content_rw_t
/var/spool/abrt-upload(/.*)?
FILE CONTEXTS
SELinux requires files to have an extended attribute to define the file
type.
You can see the context of a file using the -Z option to ls
Policy governs the access confined processes have to these files.
SELinux httpd_sys_script policy is very flexible allowing users to set‐
up their httpd_sys_script processes in as secure a method as possible.
STANDARD FILE CONTEXT
SELinux defines the file context types for the httpd_sys_script, if you
wanted to store files with these types in a diffent paths, you need to
execute the semanage command to sepecify alternate labeling and then
use restorecon to put the labels on disk.
semanage fcontext -a-t httpd_sys_script_exec_t
'/srv/httpd_sys_script/content(/.*)?'
restorecon -R -v /srv/myhttpd_sys_script_content
Note: SELinux often uses regular expressions to specify labels that
match multiple files.
The following file types are defined for httpd_sys_script:
httpd_sys_script_exec_t
- Set files with the httpd_sys_script_exec_t type, if you want to tran‐
sition an executable to the httpd_sys_script_t domain.
Paths:
/usr/.*.cgi, /opt/.*.cgi, /var/www/[^/]*/cgi-bin(/.*)?,
/var/www/perl(/.*)?, /var/www/html/[^/]*/cgi-bin(/.*)?,
/usr/lib/cgi-bin(/.*)?, /var/www/cgi-bin(/.*)?,
/var/www/svn/hooks(/.*)?, /usr/share/wordpress/.*.php,
/usr/share/wordpress/wp-includes/.*.php, /usr/share/wordpress-
mu/wp-config.php
Note: File context can be temporarily modified with the chcon command.
If you want to permanently change the file context you need to use the
semanage fcontext command. This will modify the SELinux labeling data‐
base. You will need to use restorecon to apply the labels.
SHARING FILES
If you want to share files with multiple domains (Apache, FTP, rsync,
Samba), you can set a file context of public_content_t and public_con‐
tent_rw_t. These context allow any of the above domains to read the
content. If you want a particular domain to write to the public_con‐
tent_rw_t domain, you must set the appropriate boolean.
Allow httpd_sys_script servers to read the /var/httpd_sys_script direc‐
tory by adding the public_content_t file type to the directory and by
restoring the file type.
semanage fcontext -a -t public_content_t "/var/httpd_sys_script(/.*)?"
restorecon -F -R -v /var/httpd_sys_script
Allow httpd_sys_script servers to read and write
/var/httpd_sys_script/incoming by adding the public_content_rw_t type
to the directory and by restoring the file type. You also need to turn
on the httpd_sys_script_anon_write boolean.
semanage fcontext -a-t public_content_rw_t
"/var/httpd_sys_script/incoming(/.*)?"
restorecon -F -R -v /var/httpd_sys_script/incoming
setsebool -P httpd_sys_script_anon_write 1
If you want to allow apache scripts to write to public content, direc‐
tories/files must be labeled public_rw_content_t., you must turn on the
httpd_sys_script_anon_write boolean.
setsebool -P httpd_sys_script_anon_write 1
COMMANDS
semanage fcontext can also be used to manipulate default file context
mappings.
semanage permissive can also be used to manipulate whether or not a
process type is permissive.
semanage module can also be used to enable/disable/install/remove pol‐
icy modules.
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux pol‐
icy settings.
AUTHOR
This manual page was auto-generated using sepolicy manpage .
SEE ALSOselinux(8), httpd_sys_script(8), semanage(8), restorecon(8), chcon(1),
sepolicy(8) , setsebool(8)httpd_sys_script 14-05-08 httpd_sys_script_selinux(8)
