NAME
sechecker - SELinux policy checking tool
SYNOPSIS
sechecker [OPTIONS] -p profile [POLICY ...]
sechecker [OPTIONS] -m module [POLICY ...]
sechecker [OPTIONS] -p profile -m module [POLICY ...]
DESCRIPTION
sechecker allows the user to perform predefined modular checks on a
SELinux policy. Profiles exist to group modules together and allow
modification of module settings (see below).
POLICY
sechecker supports loading a SELinux policy in one of four formats.
source A single text file containing policy source for versions 12
through 21. This file is usually named policy.conf.
binary A single file containing a monolithic kernel binary policy for
versions 15 through 21. This file is usually named by version -
for example, policy.20.
modular
A list of policy packages each containing a loadable policy
module. The first module listed must be a base module.
policy list
A single text file containing all the information needed to load
a policy, usually exported by SETools graphical utilities.
If no policy file is provided, sechecker will search for the system
default policy: checking first for a source policy, next for a binary
policy matching the running kernel’s preferred version, and finally for
the highest version that can be found. In the latter case, the policy
will be downgraded to match the running system. If no policy can be
found, sechecker will print an error message and exit.
OPTIONS
-p PROFILE, --profile=PROFILE
Load module settings from a module profile. The settings in the
profile will override the default settings for all specified
modules. If specified without -m, run all modules in the
profile. PROFILE may either be the name of a known profile (see
--list) or the path to a user created profile. see PROFILE
OPTIONS below for more information about creating profiles.
-m MODULE, --module=MODULE
Run only the module named MODULE (see --list).
--min-sev=SEVERITY
Report only results with the minimum severity of SEVERITY.
SEVERITY must have one of the following values:
low The module’s results indicate a flaw in the policy that
does not affect the manner in which the policy is
enforced, but is considered to be improper.
med The module’s results indicate a flaw in the policy that
changes the manner in which the policy is enforced;
however, it does not present an identifiable security
risk.
high The module’s results indicate a flaw in the policy that
presents an identifiable security risk.
--fcfile=FILE
Use FILE for the file_contexts file instead of the system
default. This flag is only applicable if sechecker was
configured with the --enable-sefs flag.
-l, --list
Print a list of the name and a brief description of all known
profiles and modules and exit.
-h[MODULE], --help[=MODULE]
Print general help information and exit. If MODULE is provided,
print help information for the module named MODULE and exit.
-V, --version
Print version information and exit.
REPORT GENERATION OPTIONS
Only one of the following may be provided to specify the length of the
report for all modules. If provided, this option overrides both
profile and module default output settings.
-q, --quiet
suppress output
-s, --short
print short output
-v, --verbose
print verbose output
PROFILE OPTIONS
Profiles are used to group modules together, to specify the output
format for each module in the report, and to provide the ability to
override the modules’ default options. Each profile is a well-formed
XML document, as specified by the DTD installed with sechecker. An
example profile follows:
<sechecker version="1.1">
<profile>
<module name="find_domains">
<output value="quiet"/>
<option name="domain_attribute">
<item value="domain"/>
<item value="user_domain"/>
...
</option>
</module>
...
</profile>
</sechecker>
The example profile specifies the output property for the find_domains
module. The example profile also overrides the default value for the
"domain_attribute" option in the find_domains module.
PROFILE OUTPUT OPTIONS
The valid output values for each module are specified below:
verbose
Print each result in the report with accompanying proof(s).
short Print a list of results with no accompanying proof.
none Do not print output from this module in the report; however,
module errors will still be printed.
quiet Do not print output from this module in the report and do not
print errors. This is useful for utility modules for which the
calling module handles any errors.
PROFILE MODULE OPTIONS
Several modules provide one or more options that can be set from a
profile. Each option has one or more items. To check what options are
available for a module use --help=MODULE, where MODULE is the name of
the module as printed by --list.
AUTHOR
This manual page was written by Jeremy A. Mowery <jmowery@tresys.com>.
COPYRIGHT
Copyright(C) 2005-2008 Tresys Technology, LLC
BUGS
Please report bugs via an email to setools-bugs@tresys.com.
SEE ALSO
apol(1)
sechecker(1)