Security-Enhanced Linux secures the apcupsd_cgi_script processes via flexible mandatory access control.
The apcupsd_cgi_script processes execute with the apcupsd_cgi_script_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.
For example:
ps -eZ | grep apcupsd_cgi_script_t
The apcupsd_cgi_script_t SELinux type can be entered via the apcupsd_cgi_script_exec_t, apcupsd_cgi_script_exec_t file types.
The default entrypoint paths for the apcupsd_cgi_script_t domain are the following:
/var/www/cgi-bin/apcgui(/.*)?, /var/www/apcupsd/multimon.cgi, /var/www/apcupsd/upsimage.cgi, /var/www/apcupsd/upsstats.cgi, /var/www/apcupsd/upsfstats.cgi, /var/www/cgi-bin/apcgui(/.*)?, /var/www/apcupsd/multimon.cgi, /var/www/apcupsd/upsimage.cgi, /var/www/apcupsd/upsstats.cgi, /var/www/apcupsd/upsfstats.cgi
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux apcupsd_cgi_script policy is very flexible allowing users to setup their apcupsd_cgi_script processes in as secure a method as possible.
The following process types are defined for apcupsd_cgi_script:
apcupsd_cgi_script_t
Note: semanage permissive -a apcupsd_cgi_script_t can be used to make the process type apcupsd_cgi_script_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
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 allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Enabled by default.
setsebool -P httpd_enable_cgi 1
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Enabled by default.
setsebool -P nscd_use_shm 1
The SELinux process type apcupsd_cgi_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.
apcupsd_cgi_rw_content_t
You can see the context of a file using the -Z option to lsP Policy governs the access confined processes have to these files. SELinux apcupsd_cgi_script policy is very flexible allowing users to setup their apcupsd_cgi_script processes in as secure a method as possible.
The following file types are defined for apcupsd_cgi_script:
apcupsd_cgi_script_exec_t
- Set files with the apcupsd_cgi_script_exec_t type, if you want to transition an executable to the apcupsd_cgi_script_t domain.
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 database. You will need to use restorecon to apply the labels.
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 policy modules.
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux policy settings.