Add Bandit security static analysis checking via tox

The plan is to add Bandit to the commit gate.  Bandit is
produced by the OpenStack security team to do static code
analysis for security implementation failures.  It tests
the code base for ~30 common security problems in Python
with more to come.  The bandit.yaml configuration file
is set to the value recommended by the Bandit team.

run with:
    tox -e bandit

Change-Id: I46cde803119d0162b6256346e423079cadac17cb
Partially-Implements: blueprint gate-bandit

bandit.yaml

@@ -0,0 +1,135 @@
+# optional: after how many files to update progress
+#show_progress_every: 100
+
+# optional: plugins directory name
+#plugins_dir: 'plugins'
+
+# optional: plugins discovery name pattern
+plugin_name_pattern: '*.py'
+
+# optional: terminal escape sequences to display colors
+#output_colors:
+#    DEFAULT: '\033[0m'
+#    HEADER: '\033[95m'
+#    INFO: '\033[94m'
+#    WARN: '\033[93m'
+#    ERROR: '\033[91m'
+
+# optional: log format string
+#log_format: "[%(module)s]\t%(levelname)s\t%(message)s"
+
+# globs of files which should be analyzed
+include:
+    - '*.py'
+    - '*.pyw'
+
+# a list of strings, which if found in the path will cause files to be excluded
+# for example /tests/ - to remove all all files in tests directory
+# exclude_dirs:
+#    - '/tests/'
+
+profiles:
+    barbican_conservative:
+        include:
+            - blacklist_functions
+            - blacklist_imports
+            - request_with_no_cert_validation
+            - exec_used
+            - set_bad_file_permissions
+            - subprocess_popen_with_shell_equals_true
+            - linux_commands_wildcard_injection
+            - ssl_with_bad_version
+
+
+    barbican_verbose:
+        include:
+            - blacklist_functions
+            - blacklist_imports
+            - request_with_no_cert_validation
+            - exec_used
+            - set_bad_file_permissions
+            - hardcoded_tmp_directory
+            - subprocess_popen_with_shell_equals_true
+            - any_other_function_with_shell_equals_true
+            - linux_commands_wildcard_injection
+            - ssl_with_bad_version
+            - ssl_with_bad_defaults
+
+blacklist_functions:
+    bad_name_sets:
+        - pickle:
+            qualnames: [pickle.loads, pickle.load, pickle.Unpickler,
+                        cPickle.loads, cPickle.load, cPickle.Unpickler]
+            message: "Pickle library appears to be in use, possible security issue."
+        - marshal:
+            qualnames: [marshal.load, marshal.loads]
+            message: "Deserialization with the marshal module is possibly dangerous."
+        - md5:
+            qualnames: [hashlib.md5]
+            message: "Use of insecure MD5 hash function."
+        - mktemp_q:
+            qualnames: [tempfile.mktemp]
+            message: "Use of insecure and deprecated function (mktemp)."
+        - eval:
+            qualnames: [eval]
+            message: "Use of possibly insecure function - consider using safer ast.literal_eval."
+        - mark_safe:
+            names: [mark_safe]
+            message: "Use of mark_safe() may expose cross-site scripting vulnerabilities and should be reviewed."
+        - httpsconnection:
+            qualnames: [httplib.HTTPSConnection]
+            message: "Use of HTTPSConnection does not provide security, see https://wiki.openstack.org/wiki/OSSN/OSSN-0033"
+        - yaml_load:
+            qualnames: [yaml.load]
+            message: "Use of unsafe yaml load. Allows instantiation of arbitrary objects. Consider yaml.safe_load()."
+        - urllib_urlopen:
+            qualnames: [urllib.urlopen, urllib.urlretrieve, urllib.URLopener, urllib.FancyURLopener, urllib2.urlopen, urllib2.Request]
+            message: "Audit url open for permitted schemes. Allowing use of file:/ or custom schemes is often unexpected."
+
+shell_injection:
+    # Start a process using the subprocess module, or one of its wrappers.
+    subprocess: [subprocess.Popen, subprocess.call, subprocess.check_call,
+                 subprocess.check_output, utils.execute, utils.execute_with_timeout]
+    # Start a process with a function vulnerable to shell injection.
+    shell: [os.system, os.popen, os.popen2, os.popen3, os.popen4,
+            popen2.popen2, popen2.popen3, popen2.popen4, popen2.Popen3,
+            popen2.Popen4, commands.getoutput, commands.getstatusoutput]
+    # Start a process with a function that is not vulnerable to shell injection.
+    no_shell: [os.execl, os.execle, os.execlp, os.execlpe, os.execv,os.execve,
+               os.execvp, os.execvpe, os.spawnl, os.spawnle, os.spawnlp,
+               os.spawnlpe, os.spawnv, os.spawnve, os.spawnvp, os.spawnvpe,
+               os.startfile]
+
+blacklist_imports:
+    bad_import_sets:
+        - telnet:
+            imports: [telnetlib]
+            level: ERROR
+            message: "Telnet is considered insecure. Use SSH or some other encrypted protocol."
+
+hardcoded_password:
+    word_list: "wordlist/default-passwords"
+
+ssl_with_bad_version:
+    bad_protocol_versions:
+        - 'PROTOCOL_SSLv2'
+        - 'SSLv2_METHOD'
+        - 'SSLv23_METHOD'
+        - 'PROTOCOL_SSLv3'  # strict option
+        - 'PROTOCOL_TLSv1'  # strict option
+        - 'SSLv3_METHOD'    # strict option
+        - 'TLSv1_METHOD'    # strict option
+
+password_config_option_not_marked_secret:
+    function_names:
+        - oslo.config.cfg.StrOpt
+        - oslo_config.cfg.StrOpt
+
+execute_with_run_as_root_equals_true:
+    function_names:
+        - ceilometer.utils.execute
+        - cinder.utils.execute
+        - neutron.agent.linux.utils.execute
+        - nova.utils.execute
+        - nova.utils.trycmd
+

test-requirements-bandit.txt

@@ -0,0 +1 @@
+bandit==0.10.0

tox.ini

@@ -55,3 +55,7 @@ commands = nosetests -v --processes=-1 --process-timeout=240 {toxinidir}/functio
 ignore = E711
 exclude = .git,.idea,.tox,bin,dist,debian,rpmbuild,tools,*.egg-info,*.eggs,*openstack/common,contrib,
           functionaltests,*alembic_migrations/versions,*docs/target,*.egg
+
+[testenv:bandit]
+deps = -r{toxinidir}/test-requirements-bandit.txt
+commands = bandit -c bandit.yaml -r barbican functionaltests -n5 -p barbican_conservative