1samba_unconfined_scriSpEtL_isneulxinPuoxl(i8c)y samba_uncosnafmibnae_du_nsccornifpitned_script_selinux(8)
2
6 samba_unconfined_script_selinux - Security Enhanced Linux Policy for
7 the samba_unconfined_script processes
8
10 Security-Enhanced Linux secures the samba_unconfined_script processes
11 via flexible mandatory access control.
12 The samba_unconfined_script processes execute with the samba_uncon‐
14 fined_script_t SELinux type. You can check if you have these processes
15 running by executing the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep samba_unconfined_script_t
20
24 The samba_unconfined_script_t SELinux type can be entered via the
25 samba_unconfined_script_exec_t, shell_exec_t file types.
26 The default entrypoint paths for the samba_unconfined_script_t domain
28 are the following:
29 /var/lib/samba/scripts(/.*)?, /bin/d?ash, /bin/ksh.*, /bin/zsh.*,
31 /usr/bin/d?ash, /usr/bin/ksh.*, /usr/bin/zsh.*, /bin/esh, /bin/bash,
32 /bin/fish, /bin/mksh, /bin/sash, /bin/tcsh, /bin/yash, /bin/bash2,
33 /usr/bin/esh, /sbin/nologin, /usr/bin/bash, /usr/bin/fish,
34 /usr/bin/mksh, /usr/bin/sash, /usr/bin/tcsh, /usr/bin/yash,
35 /usr/bin/bash2, /usr/sbin/sesh, /usr/sbin/smrsh, /usr/bin/scponly,
36 /usr/libexec/sesh, /usr/sbin/nologin, /usr/bin/git-shell,
37 /usr/sbin/scponlyc, /usr/libexec/sudo/sesh, /usr/bin/cockpit-bridge,
38 /usr/libexec/cockpit-agent, /usr/libexec/git-core/git-shell
39
41 SELinux defines process types (domains) for each process running on the
42 system
43 You can see the context of a process using the -Z option to ps
45 Policy governs the access confined processes have to files. SELinux
47 samba_unconfined_script policy is very flexible allowing users to setup
48 their samba_unconfined_script processes in as secure a method as possi‐
49 ble.
50 The following process types are defined for samba_unconfined_script:
52 samba_unconfined_script_t
54 Note: semanage permissive -a samba_unconfined_script_t can be used to
56 make the process type samba_unconfined_script_t permissive. SELinux
57 does not deny access to permissive process types, but the AVC (SELinux
58 denials) messages are still generated.
59
62 SELinux policy is customizable based on least access required.
63 samba_unconfined_script policy is extremely flexible and has several
64 booleans that allow you to manipulate the policy and run samba_uncon‐
65 fined_script with the tightest access possible.
66 If you want to deny user domains applications to map a memory region as
70 both executable and writable, this is dangerous and the executable
71 should be reported in bugzilla, you must turn on the deny_execmem bool‐
72 ean. Enabled by default.
73 setsebool -P deny_execmem 1
75 If you want to allow all domains to execute in fips_mode, you must turn
79 on the fips_mode boolean. Enabled by default.
80 setsebool -P fips_mode 1
82 If you want to control the ability to mmap a low area of the address
86 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
87 the mmap_low_allowed boolean. Disabled by default.
88 setsebool -P mmap_low_allowed 1
90 If you want to allow samba to run unconfined scripts, you must turn on
94 the samba_run_unconfined boolean. Disabled by default.
95 setsebool -P samba_run_unconfined 1
97 If you want to disable kernel module loading, you must turn on the
101 secure_mode_insmod boolean. Enabled by default.
102 setsebool -P secure_mode_insmod 1
104 If you want to allow unconfined executables to make their heap memory
108 executable. Doing this is a really bad idea. Probably indicates a
109 badly coded executable, but could indicate an attack. This executable
110 should be reported in bugzilla, you must turn on the selin‐
111 uxuser_execheap boolean. Disabled by default.
112 setsebool -P selinuxuser_execheap 1
114 If you want to allow unconfined executables to make their stack exe‐
118 cutable. This should never, ever be necessary. Probably indicates a
119 badly coded executable, but could indicate an attack. This executable
120 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
121 stack boolean. Enabled by default.
122 setsebool -P selinuxuser_execstack 1
124
128 The SELinux process type samba_unconfined_script_t can manage files
129 labeled with the following file types. The paths listed are the
130 default paths for these file types. Note the processes UID still need
131 to have DAC permissions.
132 file_type
134 all files on the system
136
139 SELinux requires files to have an extended attribute to define the file
140 type.
141 You can see the context of a file using the -Z option to ls
143 Policy governs the access confined processes have to these files.
145 SELinux samba_unconfined_script policy is very flexible allowing users
146 to setup their samba_unconfined_script processes in as secure a method
147 as possible.
148 The following file types are defined for samba_unconfined_script:
150 samba_unconfined_script_exec_t
154 - Set files with the samba_unconfined_script_exec_t type, if you want
156 to transition an executable to the samba_unconfined_script_t domain.
157 Note: File context can be temporarily modified with the chcon command.
161 If you want to permanently change the file context you need to use the
162 semanage fcontext command. This will modify the SELinux labeling data‐
163 base. You will need to use restorecon to apply the labels.
164
167 semanage fcontext can also be used to manipulate default file context
168 mappings.
169 semanage permissive can also be used to manipulate whether or not a
171 process type is permissive.
172 semanage module can also be used to enable/disable/install/remove pol‐
174 icy modules.
175 semanage boolean can also be used to manipulate the booleans
177 system-config-selinux is a GUI tool available to customize SELinux pol‐
180 icy settings.
181
184 This manual page was auto-generated using sepolicy manpage .
185
188 selinux(8), samba_unconfined_script(8), semanage(8), restorecon(8),
189 chcon(1), sepolicy(8), setsebool(8)
190samba_unconfined_script 19-10-08 samba_unconfined_script_selinux(8)