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Adding custom security checks @nayabpatel

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Adding custom security checks @nayabpatel
This commit is contained in:
Toni de la Fuente
2021-08-10 15:29:29 +02:00
committed by GitHub
parent 7b9a7ccb8a 4607e519a9
commit 5d4a96c35b
6 changed files with 209 additions and 24 deletions
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55
checks/check_extra7142
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@@ -10,30 +10,39 @@
# 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.
CHECK_ID_extra7142="7.142"
CHECK_TITLE_extra7142="[extra7142] Check if Application Load Balancer is dropping invalid packets to prevent header based http request smuggling"
CHECK_SCORED_extra7142="NOT_SCORED"
CHECK_TYPE_extra7142="EXTRA"
CHECK_SEVERITY_extra7142="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7142="AwsElasticLoadBalancingV2LoadBalancer"
CHECK_ALTERNATE_check7142="extra7142"
CHECK_ASFF_COMPLIANCE_TYPE_extra7142=""
CHECK_SERVICENAME_extra7142="elb"
CHECK_ID_extra7147="7.147"
CHECK_TITLE_extra7147="[extra7147] Check if S3 Glacier vaults have policies which allow access to everyone"
CHECK_SCORED_extra7147="NOT_SCORED"
CHECK_TYPE_extra7147="EXTRA"
CHECK_SEVERITY_extra7147="Critical"
CHECK_ASFF_RESOURCE_TYPE_extra7147="AwsS3Glacier"
CHECK_ALTERNATE_check7147="extra7142"
CHECK_SERVICENAME_extra7147="s3glacier"
CHECK_RISK_extra7147='Vaults accessible to everyone could expose sensible data to bad actors'
CHECK_REMEDIATION_extra7147='Ensure vault policy does not have principle as *'
CHECK_DOC_extra7147='https://docs.aws.amazon.com/amazonglacier/latest/dev/access-control-overview.html'
CHECK_CAF_EPIC_extra7147='Data Protection'
extra7142(){
extra7147(){
for regx in $REGIONS; do
LIST_OF_ELBSV2=$($AWSCLI elbv2 describe-load-balancers $PROFILE_OPT --region $regx --query 'LoadBalancers[?Type == `application`].[LoadBalancerArn]' --output text)
if [[ $LIST_OF_ELBSV2 ]];then
for alb in $LIST_OF_ELBSV2;do
CHECK_IF_DROP_INVALID_HEADER_FIELDS=$($AWSCLI elbv2 describe-load-balancer-attributes $PROFILE_OPT --region $regx --load-balancer-arn $alb --query 'Attributes[6]' --output text|grep -i true)
if [[ $CHECK_IF_DROP_INVALID_HEADER_FIELDS ]];then
textPass "$regx: Application Load Balancer $alb is dropping invalid header fields." "$regx" "$alb"
LIST_OF_VAULTS=$($AWSCLI glacier list-vaults $PROFILE_OPT --region $regx --account-id $ACCOUNT_NUM --query VaultList[*].VaultName --output text|xargs -n1)
if [[ $LIST_OF_VAULTS ]]; then
for vault in $LIST_OF_VAULTS;do
VAULT_POLICY_STATEMENTS=$($AWSCLI glacier $PROFILE_OPT get-vault-access-policy --region $regx --account-id $ACCOUNT_NUM --vault-name $vault --output json --query policy.Policy 2>&1)
if [[ $VAULT_POLICY_STATEMENTS == *GetVaultAccessPolicy* ]]; then
textInfo "$regx: Vault $vault doesn't have any policy" "$regx" "$vault"
else
VAULT_POLICY_BAD_STATEMENTS=$(echo $VAULT_POLICY_STATEMENTS | jq '. | fromjson' | jq '.Statement[] | select(.Effect=="Allow") | select(.Principal=="*" or .Principal.AWS=="*" or .Principal.CanonicalUser=="*")')
if [[ $VAULT_POLICY_BAD_STATEMENTS != "" ]]; then
textFail "$regx: Vault $vault has policy which allows access to everyone" "$regx" "$vault"
else
textFail "$regx: Application Load Balancer $alb is not dropping invalid header fields" "$regx" "$alb"
textPass "$regx: Vault $vault has policy which does not allow access to everyone" "$regx" "$vault"
fi
done
else
textInfo "$regx: no ALBs found"
fi
done
}
fi
done
else
textInfo "$regx: No Glacier vaults found" "$regx"
fi
done
}

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checks/check_extra7143 Normal file
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@@ -0,0 +1,49 @@
#!/usr/bin/env bash
# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# 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.
CHECK_ID_extra7143="7.143"
CHECK_TITLE_extra7143="[extra7143] Check if EFS have policies which allow access to everyone (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra7143="NOT_SCORED"
CHECK_TYPE_extra7143="EXTRA"
CHECK_SEVERITY_extra7143="Critical"
CHECK_ASFF_RESOURCE_TYPE_extra7143="AwsEFS"
CHECK_ALTERNATE_check7143="extra7143"
CHECK_SERVICENAME_extra7143="efs"
CHECK_RISK_extra7143='EFS accessible to everyone could expose sensible data to bad actors'
CHECK_REMEDIATION_extra7143='Ensure efs has some policy but it does not have principle as *'
CHECK_DOC_extra7143='https://docs.aws.amazon.com/efs/latest/ug/access-control-block-public-access.html'
CHECK_CAF_EPIC_extra7143='Data Protection'
extra7143(){
# "Check if EFS have policies which allow access to everyone (Not Scored) (Not part of CIS benchmark)"
for region in $REGIONS; do
LIST_OF_EFS_IDS=$($AWSCLI efs describe-file-systems $PROFILE_OPT --region $region --query FileSystems[*].FileSystemId --output text|xargs -n1)
if [[ $LIST_OF_EFS_IDS ]]; then
for efsId in $LIST_OF_EFS_IDS;do
EFS_POLICY_STATEMENTS=$($AWSCLI efs $PROFILE_OPT describe-file-system-policy --region $region --file-system-id $efsId --output json --query Policy 2>&1)
if [[ $EFS_POLICY_STATEMENTS == *PolicyNotFound* ]]; then
textFail "$region: EFS: $efsId doesn't have any policy which means it grants full access to any client" "$region" "$efsId"
else
EFS_POLICY_BAD_STATEMENTS=$(echo $EFS_POLICY_STATEMENTS | jq '. | fromjson' | jq '.Statement[] | select(.Effect=="Allow") | select(.Principal=="*" or .Principal.AWS=="*" or .Principal.CanonicalUser=="*")')
if [[ $EFS_POLICY_BAD_STATEMENTS != "" ]]; then
textFail "$region: EFS: $efsId has policy which allows access to everyone" "$region" "$efsId"
else
textPass "$region: EFS: $efsId has policy which does not allow access to everyone" "$region" "$efsId"
fi
fi
done
else
textInfo "$region: No EFS found" "$region"
fi
done
}

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#!/usr/bin/env bash
# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# 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.
CHECK_ID_extra7144="7.144"
CHECK_TITLE_extra7144="[extra7144] Check if aws cloudwatch has allowed sharing with other accounts (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra7144="NOT_SCORED"
CHECK_TYPE_extra7144="EXTRA"
CHECK_SEVERITY_extra7144="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7144="AwsCloudWatch"
CHECK_ALTERNATE_check7144="extra7144"
CHECK_SERVICENAME_extra7144="cloudwatch"
CHECK_RISK_extra7144=''
CHECK_REMEDIATION_extra7144=''
CHECK_DOC_extra7144='https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Cross-Account-Cross-Region.html'
CHECK_CAF_EPIC_extra7144=''
extra7144(){
# "Check if aws cloudwatch has allowed sharing with other accounts (Not Scored) (Not part of CIS benchmark)"
CLOUDWATCH_CROSS_ACCOUNT_ROLE=$($AWSCLI iam get-role $PROFILE_OPT --role-name=CloudWatch-CrossAccountSharingRole --output json --query Role 2>&1)
if [[ $CLOUDWATCH_CROSS_ACCOUNT_ROLE != *NoSuchEntity* ]]; then
CLOUDWATCH_POLICY_BAD_STATEMENTS=$(echo $CLOUDWATCH_CROSS_ACCOUNT_ROLE | jq '.AssumeRolePolicyDocument')
textInfo "Cloudwatch has allowed cross account sharing"
else
textPass "CloudWatch doesn't allows cross account sharing"
fi
}

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@@ -0,0 +1,49 @@
#!/usr/bin/env bash
# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# 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.
CHECK_ID_extra7145="7.145"
CHECK_TITLE_extra7145="[extra7145] Check if lambda functions have policies which allow access to every aws account (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra7145="NOT_SCORED"
CHECK_TYPE_extra7145="EXTRA"
CHECK_SEVERITY_extra7145="Critical"
CHECK_ASFF_RESOURCE_TYPE_extra7145="AwsLambda"
CHECK_ALTERNATE_check7145="extra7145"
CHECK_SERVICENAME_extra7145="lambda"
CHECK_RISK_extra7145='Lambda function access to any aws account may result security issues'
CHECK_REMEDIATION_extra7145='Ensure lambda function policiy does not allow access to any account'
CHECK_DOC_extra7145='https://docs.aws.amazon.com/lambda/latest/dg/access-control-resource-based.html'
CHECK_CAF_EPIC_extra7145=''
extra7145(){
# "Check if lambda functions have policies which allow access to every aws account (Not Scored) (Not part of CIS benchmark)"
for region in $REGIONS; do
LIST_OF_LAMBDA_FUNCTIONS=$($AWSCLI lambda list-functions $PROFILE_OPT --region $region --query Functions[*].FunctionName --output text)
if [[ $LIST_OF_LAMBDA_FUNCTIONS ]]; then
for lambdaFunction in $LIST_OF_LAMBDA_FUNCTIONS;do
FUNCTION_POLICY_STATEMENTS=$($AWSCLI lambda $PROFILE_OPT get-policy --region $region --function-name $lambdaFunction --output json --query Policy 2>&1)
if [[ $FUNCTION_POLICY_STATEMENTS == *ResourceNotFoundException* ]]; then
textInfo "$region : Lambda function: $lambdaFunction doesn't have any policy" "$region" "$lambdaFunction"
else
FUNCTION_POLICY_BAD_STATEMENTS=$(echo $FUNCTION_POLICY_STATEMENTS | jq '. | fromjson' | jq '.Statement[] | select(.Effect=="Allow") | select(.Principal=="*" or .Principal.AWS=="*" or .Principal.CanonicalUser=="*")')
if [[ $FUNCTION_POLICY_BAD_STATEMENTS != "" ]]; then
textFail "$region: Lambda function: $lambdaFunction allows public access to every aws account" "$region" "$lambdaFunction"
else
textPass "$region: Lambda function: $lambdaFunction has policy which doesn't allow access to everyone having an aws account" "$region" "$lambdaFunction"
fi
fi
done
else
textInfo "$region: No lambda functions found" "$region"
fi
done
}

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@@ -0,0 +1,43 @@
#!/usr/bin/env bash
# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# 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.
CHECK_ID_extra7146="7.146"
CHECK_TITLE_extra7146="[extra7146] Check if there is any unassigned elastic ip's (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra7146="NOT_SCORED"
CHECK_TYPE_extra7146="EXTRA"
CHECK_SEVERITY_extra7146="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7146="AwsElasticIPs"
CHECK_ALTERNATE_check7146="extra7146"
CHECK_SERVICENAME_extra7146="elasticip"
CHECK_RISK_extra7146='Unassigned elastic ips may result in extra cost'
CHECK_REMEDIATION_extra7146='Ensure elastic ips are not unassigned'
CHECK_DOC_extra7146='https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/elastic-ip-addresses-eip.html'
CHECK_CAF_EPIC_extra7146=''
extra7146(){
# "Check if there is any unassigned elastic ip (Not Scored) (Not part of CIS benchmark)"
for region in $REGIONS; do
ELASTIC_IP_ADDRESSES=$($AWSCLI ec2 describe-addresses $PROFILE_OPT --region $region --query Addresses --output json)
if [[ $ELASTIC_IP_ADDRESSES != [] ]]; then
LIST_OF_ASSOCIATED_IPS=$(echo $ELASTIC_IP_ADDRESSES | jq -r '.[] | select(.AssociationId!=null) | .PublicIp')
LIST_OF_UNASSOCIATED_IPS=$(echo $ELASTIC_IP_ADDRESSES | jq -r '.[] | select(.AssociationId==null) | .PublicIp')
for ass_ip in $LIST_OF_ASSOCIATED_IPS; do
textPass "$region: Elastic IP: $ass_ip is associated with an instance or network interface" "$region" "$ass_ip"
done
for unass_ip in $LIST_OF_UNASSOCIATED_IPS; do
textInfo "$region: Elastic IP: $unass_ip is not associated with any instance or network interface, it may incurr extra cost" "$region" "$unass_ip"
done
else
textInfo "$region: No elastic ip's found" "$region"
fi
done
}

2
groups/group7_extras
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@@ -15,7 +15,7 @@ GROUP_ID[7]='extras'
GROUP_NUMBER[7]='7.0'
GROUP_TITLE[7]='Extras - all non CIS specific checks - [extras] ****************'
GROUP_RUN_BY_DEFAULT[7]='Y' # run it when execute_all is called
GROUP_CHECKS[7]='extra71,extra72,extra73,extra74,extra75,extra76,extra77,extra78,extra79,extra710,extra711,extra712,extra713,extra714,extra715,extra716,extra717,extra718,extra719,extra720,extra721,extra722,extra723,extra724,extra725,extra726,extra727,extra728,extra729,extra730,extra731,extra732,extra733,extra734,extra735,extra736,extra738,extra739,extra740,extra741,extra742,extra743,extra744,extra745,extra746,extra747,extra748,extra749,extra750,extra751,extra752,extra753,extra754,extra755,extra756,extra757,extra758,extra761,extra762,extra763,extra764,extra765,extra767,extra768,extra769,extra770,extra771,extra772,extra773,extra774,extra775,extra776,extra777,extra778,extra779,extra780,extra781,extra782,extra783,extra784,extra785,extra786,extra787,extra788,extra791,extra792,extra793,extra794,extra795,extra796,extra797,extra798,extra799,extra7100,extra7101,extra7102,extra7103,extra7104,extra7105,extra7106,extra7107,extra7108,extra7109,extra7110,extra7111,extra7112,extra7113,extra7114,extra7115,extra7116,extra7117,extra7118,extra7119,extra7120,extra7121,extra7122,extra7123,extra7124,extra7125,extra7126,extra7127,extra7128,extra7129,extra7130,extra7131,extra7132,extra7133,extra7134,extra7135,extra7136,extra7137,extra7138,extra7139,extra7140,extra7141,extra7142'
GROUP_CHECKS[7]='extra71,extra72,extra73,extra74,extra75,extra76,extra77,extra78,extra79,extra710,extra711,extra712,extra713,extra714,extra715,extra716,extra717,extra718,extra719,extra720,extra721,extra722,extra723,extra724,extra725,extra726,extra727,extra728,extra729,extra730,extra731,extra732,extra733,extra734,extra735,extra736,extra738,extra739,extra740,extra741,extra742,extra743,extra744,extra745,extra746,extra747,extra748,extra749,extra750,extra751,extra752,extra753,extra754,extra755,extra756,extra757,extra758,extra761,extra762,extra763,extra764,extra765,extra767,extra768,extra769,extra770,extra771,extra772,extra773,extra774,extra775,extra776,extra777,extra778,extra779,extra780,extra781,extra782,extra783,extra784,extra785,extra786,extra787,extra788,extra791,extra792,extra793,extra794,extra795,extra796,extra797,extra798,extra799,extra7100,extra7101,extra7102,extra7103,extra7104,extra7105,extra7106,extra7107,extra7108,extra7109,extra7110,extra7111,extra7112,extra7113,extra7114,extra7115,extra7116,extra7117,extra7118,extra7119,extra7120,extra7121,extra7122,extra7123,extra7124,extra7125,extra7126,extra7127,extra7128,extra7129,extra7130,extra7131,extra7132,extra7133,extra7134,extra7135,extra7136,extra7137,extra7138,extra7139,extra7140,extra7141,extra7142,extra7143,extra7144,extra7145,extra7146'
# Extras 759 and 760 (lambda variables and code secrets finder are not included)
# to run detect-secrets use `./prowler -g secrets`