seinfoflow(1) SETools: SELinux Policy Analysis Tools seinfoflow(1)

seinfoflow - Information flow analysis for SELinux policies

seinfoflow [OPTIONS] -m MAP -s SOURCE [-t TARGET (-S|-A LIMIT)] [EXCLUDE [EXCLUDE ...]]

seinfoflow is a command line tool that allows the user to perform information flow analyses on an SELinux policy.

A single file containing a binary policy. This file is usually named by version on Linux systems, for example, policy.30. This file is usually named sepolicy on Android systems. If no policy file is provided, seinfoflow will search for the policy running on the current system. If no policy can be found, seinfoflow will print an error message and exit.

A file containing mappings of object permissions for object classes. These mappings are the basis on how to compute the infoflow between types. On Debian a standard permission map can be found when the package python3-sepolgen is installed at /var/lib/sepolgen/perm_map.

Specify the policy to analyze. If none is specified, seinfoflow will search for the policy running on the current system.
Specify the path to the permission map file to use in the information flow analysis.
Specify the source type to use in the information flow analysis.
Specify the target type to use in the information flow analysis. Using this option will also require specifying an analysis algorithm.

seinfoflow uses graph algorithms to analyze the information flow paths of an SELinux policy. The following algorithms are options for determining paths from a source type to a target type.

Print the shortest information flow path(s) from the source type to the target type. If multiple paths have the same length, all will be displayed.
Print all information flow path(s) up to LIMIT steps long. Depending on the connectiveness of the policy, a limit of 5 or more may be extremely expensive.

Specify the minimum permission weight to consider for the analysis (1-10). The default is 3.
Specify the maximum number of information flows to output. The default is unlimited.
A space-separated list of types to exclude from the analysis.

Display information flows into the source type. No effect if a target type is specified.
Print information flow graph statistics at the end of the analysis.
Print help information and exit.
Print full rule lists for information flows.
Print version information and exit.
Print additional informational messages.
Enable debugging output. 

Show the shortest paths for process running as httpd_t to access user home files, using the default permission map:
# seinfoflow -s httpd_t -t user_home_t -S
List all data paths shorter than 3 steps from smbd_t to httpd_log_t, when samba_enable_home_dirs and samba_create_home_dirs booleans are enabled
# seinfoflow -s smbd_t -t user_home_t -A 3 -b "samba_enable_home_dirs:true,samba_create_home_dirs:true"

Chris PeBenito <pebenito@ieee.org>

Please report bugs via the SETools bug tracker, https://github.com/SELinuxProject/setools/issues

apol(1), sediff(1), sedta(1), seinfo(1), sesearch(1)

2016-02-20 SELinux Project