sandbox_min_selinux - Online Linux Manual PageSection : 8
Updated : 21-04-01
Source : sandbox_min
Note : SELinux Policy sandbox_min
NAMEsandbox_min_selinux − Security Enhanced Linux Policy for the sandbox_min processes
DESCRIPTIONSecurity-Enhanced Linux secures the sandbox_min processes via flexible mandatory access control. The sandbox_min processes execute with the sandbox_min_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 sandbox_min_t
PROCESS TYPESSELinux 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 sandbox_min policy is very flexible allowing users to setup their sandbox_min processes in as secure a method as possible. The following process types are defined for sandbox_min: sandbox_min_t, sandbox_min_client_tNote: semanage permissive -a sandbox_min_t can be used to make the process type sandbox_min_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
MCS ConstrainedThe SELinux process type sandbox_min_t is an MCS (Multi Category Security) constrained type. Sometimes this separation is referred to as sVirt. These types are usually used for securing multi-tenant environments, such as virtualization, containers or separation of users. The tools used to launch MCS types, pick out a different MCS label for each process group. For example one process might be launched with sandbox_min_t:s0:c1,c2, and another process launched with sandbox_min_t:s0:c3,c4. The SELinux kernel only allows these processes can only write to content with a matching MCS label, or a MCS Label of s0. A process running with the MCS level of s0:c1,c2 is not allowed to write to content with the MCS label of s0:c3,c4
BOOLEANSSELinux policy is customizable based on least access required. sandbox_min policy is extremely flexible and has several booleans that allow you to manipulate the policy and run sandbox_min with the tightest access possible. If you want to deny user domains applications to map a memory region as both executable and writable, this is dangerous and the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default. setsebool -P deny_execmem 1
MANAGED FILESThe SELinux process type sandbox_min_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.
fusefs_t /var/run/user/[^/]*/gvfs
mozilla_plugin_rw_t /usr/lib/mozilla/plugins-wrapped(/.*)?
sandbox_file_t
sandbox_min_client_tmpfs_t
security_t /selinux
COMMANDSsemanage 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 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.
AUTHORThis manual page was auto-generated using sepolicy manpage".
SEE ALSOselinux(8), sandbox_min(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), sandbox_min_client_selinux(8), sandbox_min_client_selinux(8) 0
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