mirror of
https://github.com/ghndrx/prowler.git
synced 2026-02-10 06:45:08 +00:00
42 lines
2.4 KiB
Bash
42 lines
2.4 KiB
Bash
#!/usr/bin/env bash
|
|
|
|
# Prowler - the handy cloud security tool (copyright 2019) 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_extra7138="7.138"
|
|
CHECK_TITLE_extra7138="[extra7138] Ensure no Network ACLs allow ingress from 0.0.0.0/0 to any port"
|
|
CHECK_SCORED_extra7138="NOT SCORED"
|
|
CHECK_CIS_LEVEL_extra7138="LEVEL2"
|
|
CHECK_SEVERITY_extra7138="High"
|
|
CHECK_ASFF_TYPE_extra7138="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
|
|
CHECK_ASFF_RESOURCE_TYPE_extra7138="AwsEc2NetworkAcl"
|
|
CHECK_ALTERNATE_check7138="extra7138"
|
|
CHECK_SERVICENAME_extra7138="ec2"
|
|
CHECK_RISK_extra7138='Even having a perimeter firewall; having network acls open allows any user or malware with vpc access to scan for well known and sensitive ports and gain access to instance.'
|
|
CHECK_REMEDIATION_extra7138='Apply Zero Trust approach. Implement a process to scan and remediate unrestricted or overly permissive network acls. Recommended best practices is to narrow the definition for the minimum ports required.'
|
|
CHECK_DOC_extra7138='https://docs.aws.amazon.com/vpc/latest/userguide/vpc-network-acls.html'
|
|
CHECK_CAF_EPIC_extra7138='Infrastructure Security'
|
|
|
|
extra7138(){
|
|
for regx in $REGIONS; do
|
|
NACL_LIST=$($AWSCLI ec2 describe-network-acls --query 'NetworkAcls[?Entries[?((!PortRange) && (CidrBlock == `0.0.0.0/0`) && (Egress == `false`) && (RuleAction == `allow`))]].{NetworkAclId:NetworkAclId}' $PROFILE_OPT --region $regx --output text 2>&1)
|
|
if [[ $(echo "$NACL_LIST" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
|
|
textInfo "$regx: Access Denied trying to describe network acls" "$regx"
|
|
continue
|
|
fi
|
|
if [[ $NACL_LIST ]];then
|
|
for NACL in $NACL_LIST;do
|
|
textInfo "$regx: Found Network ACL: $NACL open to 0.0.0.0/0 for any port" "$regx" "$NACL"
|
|
done
|
|
else
|
|
textPass "$regx: No Network ACL found with any port open to 0.0.0.0/0" "$regx" "$NACL"
|
|
fi
|
|
done
|
|
} |