1tomcat_selinux(8) SELinux Policy tomcat tomcat_selinux(8)
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6 tomcat_selinux - Security Enhanced Linux Policy for the tomcat pro‐
7 cesses
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10 Security-Enhanced Linux secures the tomcat processes via flexible
11 mandatory access control.
12 The tomcat processes execute with the tomcat_t SELinux type. You can
14 check if you have these processes running by executing the ps command
15 with the -Z qualifier.
16 For example:
18 ps -eZ | grep tomcat_t
20
24 The tomcat_t SELinux type can be entered via the tomcat_exec_t file
25 type.
26 The default entrypoint paths for the tomcat_t domain are the following:
28 /usr/sbin/tomcat(6)?, /usr/libexec/tomcat/server
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32 SELinux defines process types (domains) for each process running on the
33 system
34 You can see the context of a process using the -Z option to ps
36 Policy governs the access confined processes have to files. SELinux
38 tomcat policy is very flexible allowing users to setup their tomcat
39 processes in as secure a method as possible.
40 The following process types are defined for tomcat:
42 tomcat_t
44 Note: semanage permissive -a tomcat_t can be used to make the process
46 type tomcat_t permissive. SELinux does not deny access to permissive
47 process types, but the AVC (SELinux denials) messages are still gener‐
48 ated.
49
52 SELinux policy is customizable based on least access required. tomcat
53 policy is extremely flexible and has several booleans that allow you to
54 manipulate the policy and run tomcat with the tightest access possible.
55 If you want to allow tomcat to use executable memory and executable
59 stack, you must turn on the tomcat_use_execmem boolean. Disabled by
60 default.
61 setsebool -P tomcat_use_execmem 1
63 If you want to allow users to resolve user passwd entries directly from
67 ldap rather then using a sssd server, you must turn on the authlo‐
68 gin_nsswitch_use_ldap boolean. Disabled by default.
69 setsebool -P authlogin_nsswitch_use_ldap 1
71 If you want to deny user domains applications to map a memory region as
75 both executable and writable, this is dangerous and the executable
76 should be reported in bugzilla, you must turn on the deny_execmem bool‐
77 ean. Enabled by default.
78 setsebool -P deny_execmem 1
80 If you want to allow all domains to execute in fips_mode, you must turn
84 on the fips_mode boolean. Enabled by default.
85 setsebool -P fips_mode 1
87 If you want to allow confined applications to run with kerberos, you
91 must turn on the kerberos_enabled boolean. Enabled by default.
92 setsebool -P kerberos_enabled 1
94 If you want to control the ability to mmap a low area of the address
98 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
99 the mmap_low_allowed boolean. Disabled by default.
100 setsebool -P mmap_low_allowed 1
102 If you want to allow system to run with NIS, you must turn on the
106 nis_enabled boolean. Disabled by default.
107 setsebool -P nis_enabled 1
109 If you want to allow confined applications to use nscd shared memory,
113 you must turn on the nscd_use_shm boolean. Disabled by default.
114 setsebool -P nscd_use_shm 1
116 If you want to disable kernel module loading, you must turn on the
120 secure_mode_insmod boolean. Enabled by default.
121 setsebool -P secure_mode_insmod 1
123 If you want to allow unconfined executables to make their heap memory
127 executable. Doing this is a really bad idea. Probably indicates a
128 badly coded executable, but could indicate an attack. This executable
129 should be reported in bugzilla, you must turn on the selin‐
130 uxuser_execheap boolean. Disabled by default.
131 setsebool -P selinuxuser_execheap 1
133 If you want to allow unconfined executables to make their stack exe‐
137 cutable. This should never, ever be necessary. Probably indicates a
138 badly coded executable, but could indicate an attack. This executable
139 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
140 stack boolean. Enabled by default.
141 setsebool -P selinuxuser_execstack 1
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147 The SELinux process type tomcat_t can manage files labeled with the
148 following file types. The paths listed are the default paths for these
149 file types. Note the processes UID still need to have DAC permissions.
150 file_type
152 all files on the system
154
157 SELinux requires files to have an extended attribute to define the file
158 type.
159 You can see the context of a file using the -Z option to ls
161 Policy governs the access confined processes have to these files.
163 SELinux tomcat policy is very flexible allowing users to setup their
164 tomcat processes in as secure a method as possible.
165 STANDARD FILE CONTEXT
167 SELinux defines the file context types for the tomcat, if you wanted to
169 store files with these types in a diffent paths, you need to execute
170 the semanage command to sepecify alternate labeling and then use
171 restorecon to put the labels on disk.
172 semanage fcontext -a -t tomcat_unit_file_t '/srv/mytomcat_con‐
174 tent(/.*)?'
175 restorecon -R -v /srv/mytomcat_content
176 Note: SELinux often uses regular expressions to specify labels that
178 match multiple files.
179 The following file types are defined for tomcat:
181 tomcat_cache_t
185 - Set files with the tomcat_cache_t type, if you want to store the
187 files under the /var/cache directory.
188 tomcat_exec_t
192 - Set files with the tomcat_exec_t type, if you want to transition an
194 executable to the tomcat_t domain.
195 Paths:
198 /usr/sbin/tomcat(6)?, /usr/libexec/tomcat/server
199 tomcat_log_t
202 - Set files with the tomcat_log_t type, if you want to treat the data
204 as tomcat log data, usually stored under the /var/log directory.
205 tomcat_tmp_t
209 - Set files with the tomcat_tmp_t type, if you want to store tomcat
211 temporary files in the /tmp directories.
212 tomcat_unit_file_t
216 - Set files with the tomcat_unit_file_t type, if you want to treat the
218 files as tomcat unit content.
219 tomcat_var_lib_t
223 - Set files with the tomcat_var_lib_t type, if you want to store the
225 tomcat files under the /var/lib directory.
226 Paths:
229 /var/lib/tomcat6?(/.*)?, /var/lib/tomcats?(/.*)?
230 tomcat_var_run_t
233 - Set files with the tomcat_var_run_t type, if you want to store the
235 tomcat files under the /run or /var/run directory.
236 Note: File context can be temporarily modified with the chcon command.
240 If you want to permanently change the file context you need to use the
241 semanage fcontext command. This will modify the SELinux labeling data‐
242 base. You will need to use restorecon to apply the labels.
243
246 semanage fcontext can also be used to manipulate default file context
247 mappings.
248 semanage permissive can also be used to manipulate whether or not a
250 process type is permissive.
251 semanage module can also be used to enable/disable/install/remove pol‐
253 icy modules.
254 semanage boolean can also be used to manipulate the booleans
256 system-config-selinux is a GUI tool available to customize SELinux pol‐
259 icy settings.
260
263 This manual page was auto-generated using sepolicy manpage .
264
267 selinux(8), tomcat(8), semanage(8), restorecon(8), chcon(1), sepol‐
268 icy(8), setsebool(8)
269tomcat 19-06-18 tomcat_selinux(8)