1tomcat_selinux(8) SELinux Policy tomcat tomcat_selinux(8)
2
6 tomcat_selinux - Security Enhanced Linux Policy for the tomcat pro‐
7 cesses
8
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
30
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 de‐
60 fault.
61 setsebool -P tomcat_use_execmem 1
63 If you want to control the ability to mmap a low area of the address
67 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
68 the mmap_low_allowed boolean. Disabled by default.
69 setsebool -P mmap_low_allowed 1
71 If you want to disable kernel module loading, you must turn on the se‐
75 cure_mode_insmod boolean. Enabled by default.
76 setsebool -P secure_mode_insmod 1
78 If you want to allow unconfined executables to make their heap memory
82 executable. Doing this is a really bad idea. Probably indicates a
83 badly coded executable, but could indicate an attack. This executable
84 should be reported in bugzilla, you must turn on the selinuxuser_ex‐
85 echeap boolean. Disabled by default.
86 setsebool -P selinuxuser_execheap 1
88 If you want to allow unconfined executables to make their stack exe‐
92 cutable. This should never, ever be necessary. Probably indicates a
93 badly coded executable, but could indicate an attack. This executable
94 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
95 stack boolean. Enabled by default.
96 setsebool -P selinuxuser_execstack 1
98
102 The SELinux process type tomcat_t can manage files labeled with the
103 following file types. The paths listed are the default paths for these
104 file types. Note the processes UID still need to have DAC permissions.
105 file_type
107 all files on the system
109
112 SELinux requires files to have an extended attribute to define the file
113 type.
114 You can see the context of a file using the -Z option to ls
116 Policy governs the access confined processes have to these files.
118 SELinux tomcat policy is very flexible allowing users to setup their
119 tomcat processes in as secure a method as possible.
120 STANDARD FILE CONTEXT
122 SELinux defines the file context types for the tomcat, if you wanted to
124 store files with these types in a diffent paths, you need to execute
125 the semanage command to specify alternate labeling and then use re‐
126 storecon to put the labels on disk.
127 semanage fcontext -a -t tomcat_unit_file_t '/srv/mytomcat_con‐
129 tent(/.*)?'
130 restorecon -R -v /srv/mytomcat_content
131 Note: SELinux often uses regular expressions to specify labels that
133 match multiple files.
134 The following file types are defined for tomcat:
136 tomcat_cache_t
140 - Set files with the tomcat_cache_t type, if you want to store the
142 files under the /var/cache directory.
143 tomcat_exec_t
147 - Set files with the tomcat_exec_t type, if you want to transition an
149 executable to the tomcat_t domain.
150 Paths:
153 /usr/sbin/tomcat(6)?, /usr/libexec/tomcat/server
154 tomcat_log_t
157 - Set files with the tomcat_log_t type, if you want to treat the data
159 as tomcat log data, usually stored under the /var/log directory.
160 tomcat_tmp_t
164 - Set files with the tomcat_tmp_t type, if you want to store tomcat
166 temporary files in the /tmp directories.
167 tomcat_unit_file_t
171 - Set files with the tomcat_unit_file_t type, if you want to treat the
173 files as tomcat unit content.
174 tomcat_var_lib_t
178 - Set files with the tomcat_var_lib_t type, if you want to store the
180 tomcat files under the /var/lib directory.
181 Paths:
184 /var/lib/tomcat6?(/.*)?, /var/lib/tomcats?(/.*)?
185 tomcat_var_run_t
188 - Set files with the tomcat_var_run_t type, if you want to store the
190 tomcat files under the /run or /var/run directory.
191 Note: File context can be temporarily modified with the chcon command.
195 If you want to permanently change the file context you need to use the
196 semanage fcontext command. This will modify the SELinux labeling data‐
197 base. You will need to use restorecon to apply the labels.
198
201 semanage fcontext can also be used to manipulate default file context
202 mappings.
203 semanage permissive can also be used to manipulate whether or not a
205 process type is permissive.
206 semanage module can also be used to enable/disable/install/remove pol‐
208 icy modules.
209 semanage boolean can also be used to manipulate the booleans
211 system-config-selinux is a GUI tool available to customize SELinux pol‐
214 icy settings.
215
218 This manual page was auto-generated using sepolicy manpage .
219
222 selinux(8), tomcat(8), semanage(8), restorecon(8), chcon(1), sepol‐
223 icy(8), setsebool(8)
224tomcat 21-11-19 tomcat_selinux(8)