1crack_selinux(8) SELinux Policy crack crack_selinux(8)
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6 crack_selinux - Security Enhanced Linux Policy for the crack processes
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9 Security-Enhanced Linux secures the crack processes via flexible manda‐
10 tory access control.
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12 The crack processes execute with the crack_t SELinux type. You can
13 check if you have these processes running by executing the ps command
14 with the -Z qualifier.
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16 For example:
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18 ps -eZ | grep crack_t
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23 The crack_t SELinux type can be entered via the crack_exec_t file type.
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25 The default entrypoint paths for the crack_t domain are the following:
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27 /usr/sbin/crack_[a-z]*, /usr/sbin/cracklib-[a-z]*
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30 SELinux defines process types (domains) for each process running on the
31 system
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33 You can see the context of a process using the -Z option to ps
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35 Policy governs the access confined processes have to files. SELinux
36 crack policy is very flexible allowing users to setup their crack pro‐
37 cesses in as secure a method as possible.
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39 The following process types are defined for crack:
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41 crack_t
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43 Note: semanage permissive -a crack_t can be used to make the process
44 type crack_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
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50 SELinux policy is customizable based on least access required. crack
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run crack with the tightest access possible.
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56 If you want to allow all domains to execute in fips_mode, you must turn
57 on the fips_mode boolean. Enabled by default.
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59 setsebool -P fips_mode 1
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64 The SELinux process type crack_t can manage files labeled with the fol‐
65 lowing file types. The paths listed are the default paths for these
66 file types. Note the processes UID still need to have DAC permissions.
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68 crack_db_t
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70 /usr/share/cracklib(/.*)?
71 /var/cache/cracklib(/.*)?
72 /usr/lib/cracklib_dict.*
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76 SELinux requires files to have an extended attribute to define the file
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79 You can see the context of a file using the -Z option to ls
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81 Policy governs the access confined processes have to these files.
82 SELinux crack policy is very flexible allowing users to setup their
83 crack processes in as secure a method as possible.
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85 STANDARD FILE CONTEXT
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87 SELinux defines the file context types for the crack, if you wanted to
88 store files with these types in a diffent paths, you need to execute
89 the semanage command to sepecify alternate labeling and then use
90 restorecon to put the labels on disk.
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92 semanage fcontext -a -t crack_tmp_t '/srv/mycrack_content(/.*)?'
93 restorecon -R -v /srv/mycrack_content
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95 Note: SELinux often uses regular expressions to specify labels that
96 match multiple files.
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98 The following file types are defined for crack:
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102 crack_db_t
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104 - Set files with the crack_db_t type, if you want to treat the files as
105 crack database content.
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108 Paths:
109 /usr/share/cracklib(/.*)?, /var/cache/cracklib(/.*)?,
110 /usr/lib/cracklib_dict.*
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113 crack_exec_t
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115 - Set files with the crack_exec_t type, if you want to transition an
116 executable to the crack_t domain.
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119 Paths:
120 /usr/sbin/crack_[a-z]*, /usr/sbin/cracklib-[a-z]*
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123 crack_tmp_t
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125 - Set files with the crack_tmp_t type, if you want to store crack tem‐
126 porary files in the /tmp directories.
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130 Note: File context can be temporarily modified with the chcon command.
131 If you want to permanently change the file context you need to use the
132 semanage fcontext command. This will modify the SELinux labeling data‐
133 base. You will need to use restorecon to apply the labels.
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137 semanage fcontext can also be used to manipulate default file context
138 mappings.
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140 semanage permissive can also be used to manipulate whether or not a
141 process type is permissive.
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143 semanage module can also be used to enable/disable/install/remove pol‐
144 icy modules.
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146 semanage boolean can also be used to manipulate the booleans
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149 system-config-selinux is a GUI tool available to customize SELinux pol‐
150 icy settings.
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154 This manual page was auto-generated using sepolicy manpage .
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158 selinux(8), crack(8), semanage(8), restorecon(8), chcon(1), sepol‐
159 icy(8), setsebool(8)
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163crack 20-05-05 crack_selinux(8)