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This commit is contained in:
Shreya 2021-03-30 17:32:21 +05:30
parent 4a5d535327
commit 13d03abd37
2 changed files with 43 additions and 35 deletions
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72
monkey/infection_monkey/network/postgresql_fingerprint.py → monkey/infection_monkey/network/postgresql_finger.py
View File

@ -29,8 +29,11 @@ class PostgreSQLFinger(HostFinger):
"SSL usage is forced.\n",
'only_selected': "Only selected hosts can make connections (SSL or non-SSL).\n"
}
RELEVANT_EX_SUBSTRINGS = ["password authentication failed",
"entry for host"] # "no pg_hba.conf entry for host" but filename may be diff
RELEVANT_EX_SUBSTRINGS =\
{
'no_auth': "password authentication failed",
'no_entry': "entry for host" # "no pg_hba.conf entry for host" but filename may be diff
}
def get_host_fingerprint(self, host):
try:
@ -45,7 +48,7 @@ class PostgreSQLFinger(HostFinger):
try:
exception_string = str(ex)
if not self.is_relevant_exception(exception_string):
if not self._is_relevant_exception(exception_string):
return False
# all's well; start analyzing errors
@ -57,8 +60,8 @@ class PostgreSQLFinger(HostFinger):
return False
def is_relevant_exception(self, exception_string):
if not any(substr in exception_string for substr in self.RELEVANT_EX_SUBSTRINGS):
def _is_relevant_exception(self, exception_string):
if not any(substr in exception_string for substr in self.RELEVANT_EX_SUBSTRINGS.values()):
# OperationalError due to some other reason - irrelevant exception
return False
return True
@ -71,32 +74,10 @@ class PostgreSQLFinger(HostFinger):
ssl_connection_details = []
ssl_conf_on_server = self.is_ssl_configured(exceptions)
# SSL configured
if ssl_conf_on_server:
ssl_connection_details.append(self.CONNECTION_DETAILS['ssl_conf'])
# SSL
ssl_selected_comms_only = False
if self.found_entry_for_host_but_pwd_auth_failed(exceptions[0]):
ssl_connection_details.append(self.CONNECTION_DETAILS['all_ssl'])
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['selected_ssl'])
ssl_selected_comms_only = True
# non-SSL
if self.found_entry_for_host_but_pwd_auth_failed(exceptions[1]):
ssl_connection_details.append(self.CONNECTION_DETAILS['all_non_ssl'])
else:
if ssl_selected_comms_only: # if only selected SSL allowed and only selected non-SSL allowed
ssl_connection_details[-1] = self.CONNECTION_DETAILS['only_selected']
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['selected_non_ssl'])
# SSL not configured
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['ssl_not_conf'])
if self.found_entry_for_host_but_pwd_auth_failed(exceptions[0]):
ssl_connection_details.append(self.CONNECTION_DETAILS['all_non_ssl'])
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['selected_non_ssl'])
if ssl_conf_on_server: # SSL configured
self.get_connection_details_ssl_configured()
else: # SSL not configured
self.get_connection_details_ssl_not_configured()
host.services[self._SCANNED_SERVICE]['communication_encryption_details'] = ''.join(ssl_connection_details)
@ -109,8 +90,35 @@ class PostgreSQLFinger(HostFinger):
elif len(exceptions) == 2: # SSL configured so checks for both
return True
def get_connection_details_ssl_configured(self):
ssl_connection_details.append(self.CONNECTION_DETAILS['ssl_conf'])
ssl_selected_comms_only = False
# check exception message for SSL connection
if self.found_entry_for_host_but_pwd_auth_failed(exceptions[0]):
ssl_connection_details.append(self.CONNECTION_DETAILS['all_ssl'])
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['selected_ssl'])
ssl_selected_comms_only = True
# check exception message for non-SSL connection
if self.found_entry_for_host_but_pwd_auth_failed(exceptions[1]):
ssl_connection_details.append(self.CONNECTION_DETAILS['all_non_ssl'])
else:
if ssl_selected_comms_only: # if only selected SSL allowed and only selected non-SSL allowed
ssl_connection_details[-1] = self.CONNECTION_DETAILS['only_selected']
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['selected_non_ssl'])
def get_connection_details_ssl_not_configured(self):
ssl_connection_details.append(self.CONNECTION_DETAILS['ssl_not_conf'])
if self.found_entry_for_host_but_pwd_auth_failed(exceptions[0]):
ssl_connection_details.append(self.CONNECTION_DETAILS['all_non_ssl'])
else:
ssl_connection_details.append(self.CONNECTION_DETAILS['selected_non_ssl'])
@staticmethod
def found_entry_for_host_but_pwd_auth_failed(exception):
if PostgreSQLFinger.RELEVANT_EX_SUBSTRINGS[0] in exception:
if PostgreSQLFinger.RELEVANT_EX_SUBSTRINGS['no_auth'] in exception:
return True # entry found in pg_hba.conf file but password authentication failed
return False # entry not found in pg_hba.conf file

6
monkey/infection_monkey/network/test_postgresql_fingerprint.py → monkey/infection_monkey/network/test_postgresql_finger.py
View File

@ -1,7 +1,7 @@
from unittest import TestCase
from unittest.mock import Mock
from infection_monkey.network.postgresql_fingerprint import PostgreSQLFinger
from infection_monkey.network.postgresql_finger import PostgreSQLFinger
IRRELEVANT_EXCEPTION_STRING = "This is an irrelevant exception string."
@ -76,9 +76,9 @@ EXAMPLE_EXCEPTIONS_WITH_EXPECTED_RESULTS =\
class TestPostgreSQLFinger(TestCase):
def test_is_relevant_exception(self):
assert PostgreSQLFinger().is_relevant_exception(IRRELEVANT_EXCEPTION_STRING) is False
assert PostgreSQLFinger()._is_relevant_exception(IRRELEVANT_EXCEPTION_STRING) is False
for exception_string in EXAMPLE_EXCEPTIONS_WITH_EXPECTED_RESULTS:
assert PostgreSQLFinger().is_relevant_exception(exception_string) is True
assert PostgreSQLFinger()._is_relevant_exception(exception_string) is True
def test_analyze_operational_error(self):
host = Mock(['services'])