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Merge pull request #281 from Netflix/develop
Preparation for v0.4.1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| #!/bin/bash | ||
| ########################################## | ||
| # Copyright 2015 Netflix, Inc. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| ########################################## | ||
| # | ||
| # Script to test Dart installation for Security Monkey | ||
| # | ||
| ########################################## | ||
|
|
||
| DART_DOWNLOAD_LOCATION="https://storage.googleapis.com/dart-archive/channels/stable/release/1.12.2/sdk/dartsdk-linux-x64-release.zip" | ||
|
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| echo "Getting Dart..." | ||
| wget $DART_DOWNLOAD_LOCATION -O 'dartsdk-linux-x64-release.zip' | ||
|
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| echo "Unzipping Dart..." | ||
| unzip "dartsdk-linux-x64-release.zip" > /dev/null | ||
|
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| echo Setting up the environment variables | ||
| export DART_SDK="$PWD/dart-sdk" | ||
| export PATH="$DART_SDK/bin:$PATH" | ||
|
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| echo "Building the dart deps..." | ||
| cd dart | ||
| pub get | ||
| pub build |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| # Copyright 2015 Netflix, Inc. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| """ | ||
| .. module: security_monkey.auditors.elb | ||
| :platform: Unix | ||
| .. version:: $$VERSION$$ | ||
| .. moduleauthor:: Mike Grima <[email protected]> | ||
| """ | ||
| from security_monkey.auditor import Auditor | ||
| from security_monkey.common.arn import ARN | ||
| from security_monkey.datastore import NetworkWhitelistEntry | ||
| from security_monkey.watchers.elasticsearch_service import ElasticSearchService | ||
|
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| import ipaddr | ||
|
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|
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| class ElasticSearchServiceAuditor(Auditor): | ||
| index = ElasticSearchService.index | ||
| i_am_singular = ElasticSearchService.i_am_singular | ||
| i_am_plural = ElasticSearchService.i_am_plural | ||
|
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| def __init__(self, accounts=None, debug=False): | ||
| super(ElasticSearchServiceAuditor, self).__init__(accounts=accounts, debug=debug) | ||
|
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| def prep_for_audit(self): | ||
| self.network_whitelist = NetworkWhitelistEntry.query.all() | ||
|
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| def _parse_arn(self, arn_input, account_numbers, es_domain): | ||
| if arn_input == '*': | ||
| notes = "An ElasticSearch Service domain policy where { 'Principal': { 'AWS': '*' } } must also have" | ||
| notes += " a {'Condition': {'IpAddress': { 'AWS:SourceIp': '<ARN>' } } }" | ||
| notes += " or it is open to any AWS account." | ||
| self.add_issue(20, 'ES cluster open to all AWS accounts', es_domain, notes=notes) | ||
| return | ||
|
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| arn = ARN(arn_input) | ||
| if arn.error: | ||
| self.add_issue(3, 'Auditor could not parse ARN', es_domain, notes=arn_input) | ||
| return | ||
|
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| if arn.tech == 's3': | ||
| notes = "The ElasticSearch Service domain allows access from S3 bucket [{}]. ".format(arn.name) | ||
| notes += "Security Monkey does not yet have the capability to determine if this is " | ||
| notes += "a friendly S3 bucket. Please verify manually." | ||
| self.add_issue(3, 'ES cluster allows access from S3 bucket', es_domain, notes=notes) | ||
| else: | ||
| account_numbers.append(arn.account_number) | ||
|
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| def check_es_access_policy(self, es_domain): | ||
| policy = es_domain.config["policy"] | ||
|
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| for statement in policy.get("Statement", []): | ||
| effect = statement.get("Effect") | ||
| # We only care about "Allows" | ||
| if effect.lower() == "deny": | ||
| continue | ||
|
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| account_numbers = [] | ||
| princ = statement.get("Principal", {}) | ||
| if isinstance(princ, dict): | ||
| princ_aws = princ.get("AWS", "error") | ||
| else: | ||
| princ_aws = princ | ||
|
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| if princ_aws == "*": | ||
| condition = statement.get('Condition', {}) | ||
|
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| # Get the IpAddress subcondition: | ||
| ip_addr_condition = condition.get("IpAddress") | ||
|
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| if ip_addr_condition: | ||
| source_ip_condition = ip_addr_condition.get("aws:SourceIp") | ||
|
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| if not ip_addr_condition or not source_ip_condition: | ||
| tag = "ElasticSearch Service domain open to everyone" | ||
| notes = "An ElasticSearch Service domain policy where { 'Principal': { '*' } } OR" | ||
| notes += " { 'Principal': { 'AWS': '*' } } must also have a" | ||
| notes += " {'Condition': {'IpAddress': { 'AWS:SourceIp': '<ARN>' } } }" | ||
| notes += " or it is open to the world. In this case, anyone is allowed to perform " | ||
| notes += " this action(s): {}".format(statement.get("Action")) | ||
| self.add_issue(20, tag, es_domain, notes=notes) | ||
|
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| else: | ||
| # Check for "aws:SourceIp" as a condition: | ||
| if isinstance(source_ip_condition, list): | ||
| for cidr in source_ip_condition: | ||
| self._check_proper_cidr(cidr, es_domain, statement.get("Action")) | ||
|
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| else: | ||
| self._check_proper_cidr(source_ip_condition, es_domain, statement.get("Action")) | ||
|
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| else: | ||
| if isinstance(princ_aws, list): | ||
| for entry in princ_aws: | ||
| arn = ARN(entry) | ||
| if arn.error: | ||
| self.add_issue(3, 'Auditor could not parse ARN', es_domain, notes=entry) | ||
| continue | ||
|
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| if arn.root: | ||
| message = "ALL IAM Roles/users/groups in account can perform the following actions:\n" | ||
| message += "{}".format(statement.get("Action")) | ||
| self.add_issue(3, message, es_domain, notes="Root IAM ARN") | ||
|
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| account_numbers.append(arn.account_number) | ||
| else: | ||
| arn = ARN(princ_aws) | ||
| if arn.error: | ||
| self.add_issue(3, 'Auditor could not parse ARN', es_domain, notes=princ_aws) | ||
| else: | ||
| if arn.root: | ||
| message = "ALL IAM Roles/users/groups in account can perform the following actions:\n" | ||
| message += "{}".format(statement.get("Action")) | ||
| self.add_issue(3, message, es_domain, notes="Root IAM ARN") | ||
|
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| account_numbers.append(arn.account_number) | ||
|
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| for account_number in account_numbers: | ||
| self._check_cross_account(account_number, es_domain, 'policy') | ||
|
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| def _check_proper_cidr(self, cidr, es_domain, actions): | ||
| try: | ||
| any, ip_cidr = self._check_for_any_ip(cidr, es_domain, actions) | ||
| if any: | ||
| return | ||
|
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| if not self._check_inclusion_in_network_whitelist(cidr): | ||
| message = "A CIDR that is not in the whitelist has access to this ElasticSearch Service domain:\n" | ||
| message += "CIDR: {}, Actions: {}".format(cidr, actions) | ||
| self.add_issue(5, message, es_domain, notes=cidr) | ||
|
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| # Check if the CIDR is in a large subnet (and not whitelisted): | ||
| # Check if it's 10.0.0.0/8 | ||
| if ip_cidr == ipaddr.IPNetwork("10.0.0.0/8"): | ||
| message = "aws:SourceIp Condition contains a very large IP range: 10.0.0.0/8" | ||
| self.add_issue(7, message, es_domain, notes=cidr) | ||
| else: | ||
| mask = int(ip_cidr.exploded.split('/')[1]) | ||
| if 0 < mask < 24: | ||
| message = "aws:SourceIp contains a large IP Range: {}".format(cidr) | ||
| self.add_issue(3, message, es_domain, notes=cidr) | ||
|
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|
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| except ValueError as ve: | ||
| self.add_issue(3, 'Auditor could not parse CIDR', es_domain, notes=cidr) | ||
|
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| def _check_for_any_ip(self, cidr, es_domain, actions): | ||
| if cidr == '*': | ||
| self.add_issue(20, 'Any IP can perform the following actions against this ElasticSearch Service ' | ||
| 'domain:\n{}'.format(actions), | ||
| es_domain, notes=cidr) | ||
| return True, None | ||
|
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| zero = ipaddr.IPNetwork("0.0.0.0/0") | ||
| ip_cidr = ipaddr.IPNetwork(cidr) | ||
| if zero == ip_cidr: | ||
| self.add_issue(20, 'Any IP can perform the following actions against this ElasticSearch Service ' | ||
| 'domain:\n{}'.format(actions), | ||
| es_domain, notes=cidr) | ||
| return True, None | ||
|
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| return False, ip_cidr | ||
|
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| def _check_inclusion_in_network_whitelist(self, cidr): | ||
| for entry in self.network_whitelist: | ||
| if ipaddr.IPNetwork(cidr) in ipaddr.IPNetwork(str(entry.cidr)): | ||
| return True | ||
| return False |
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