unconfin..._selinux(8)

💖 NAME 💖

hey bestie! this is the unconfin..._selinux(8) page — the SELinux Policy unconfined_dbusd manual — and it's all about <pink>Security Enhanced Linux Policy for the unconfined_dbusd processes</pink> 💅

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the unconfined_dbusd processes via flexible mandatory access control.

The unconfined_dbusd processes execute with the unconfined_dbusd_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 unconfined_dbusd_t

🦋 ENTRYPOINTS 🦋

The unconfined_dbusd_t SELinux type can be entered via the dbusd_exec_t file type.

The default entrypoint paths for the unconfined_dbusd_t domain are the following:

• /usr/bin/dbus-daemon(-1)?
• /usr/bin/dbus-broker
• /usr/bin/dbus-broker-launch
• /lib/dbus-1/dbus-daemon-launch-helper
• /usr/lib/dbus-1/dbus-daemon-launch-helper
• /usr/libexec/dbus-1/dbus-daemon-launch-helper

🌸 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 unconfined_dbusd policy is very flexible allowing users to setup their unconfined_dbusd processes in as secure a method as possible.

The following process types are defined for unconfined_dbusd:

• unconfined_dbusd_t

Note: semanage permissive -a unconfined_dbusd_t can be used to make the process type unconfined_dbusd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. unconfined_dbusd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run unconfined_dbusd with the tightest access possible.

• deny_execmem — if you want to deny user domains applications to map a memory region as both executable and writable, flip this on. This is dangerous, and the executable should be reported in bugzilla. Disabled by default.

setsebool -P deny_execmem 1

• mmap_low_allowed — if you want to control the ability to mmap a low area of the address space, as configured by /proc/sys/vm/mmap_min_addr, turn this on. Disabled by default.

setsebool -P mmap_low_allowed 1

• nis_enabled — if you want to allow system to run with NIS, turn this on. Disabled by default.

setsebool -P nis_enabled 1

• secure_mode_insmod — if you want to disable kernel module loading, turn this on. Disabled by default.

setsebool -P secure_mode_insmod 1

• selinuxuser_execheap — if you want to allow unconfined executables to make their heap memory executable, turn this on. Doing this is a really bad idea. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla. Disabled by default.

setsebool -P selinuxuser_execheap 1

• selinuxuser_execstack — if you want to allow unconfined executables to make their stack executable, turn this on. This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla. Disabled by default.

setsebool -P selinuxuser_execstack 1

🌈 MANAGED FILES 🌈

The SELinux process type unconfined_dbusd_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.

• file_type — all files on the system

👑 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 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.

💜 AUTHOR 💜

This manual page was auto-generated using sepolicy manpage .

⭐ SEE ALSO ⭐

selinux(8), unconfined_dbusd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)

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signed, sealed, and auto-generated with love: unconfined_dbusd, dated 26-10-06, from the unconfin..._selinux(8) manual 💅🎀✨