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60 lines
3.0 KiB
Bash
60 lines
3.0 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy
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# of the License at http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software distributed
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# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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# CONDITIONS OF ANY KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations under the License.
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CHECK_ID_extra75="7.5"
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CHECK_TITLE_extra75="[extra75] Ensure there are no Security Groups not being used"
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CHECK_SCORED_extra75="NOT_SCORED"
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CHECK_CIS_LEVEL_extra75="EXTRA"
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CHECK_SEVERITY_extra75="Informational"
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CHECK_ASFF_RESOURCE_TYPE_extra75="AwsEc2SecurityGroup"
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CHECK_ALTERNATE_extra705="extra75"
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CHECK_ALTERNATE_check75="extra75"
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CHECK_ALTERNATE_check705="extra75"
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CHECK_ASFF_COMPLIANCE_TYPE_extra75="ens-mp.com.4.aws.sg.3"
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CHECK_SERVICENAME_extra75="ec2"
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CHECK_RISK_extra75='Having clear definition and scope for Security Groups creates a better administration environment.'
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CHECK_REMEDIATION_extra75='List all the security groups and then use the cli to check if they are attached to an instance.'
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CHECK_DOC_extra75='https://aws.amazon.com/premiumsupport/knowledge-center/ec2-find-security-group-resources/'
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CHECK_CAF_EPIC_extra75='Infrastructure Security'
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extra75(){
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# "Ensure there are no Security Groups not being used "
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for regx in $REGIONS; do
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SECURITYGROUPS=$($AWSCLI ec2 describe-security-groups $PROFILE_OPT --region $regx --max-items $MAXITEMS --output json 2>&1 )
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if [[ $(echo "$SECURITYGROUPS" | grep -E 'AccessDenied|UnauthorizedOperation') ]]; then
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textInfo "$regx: Access Denied trying to describe security groups" "$regx"
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continue
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fi
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if [[ $(echo "$SECURITYGROUPS" | jq '."SecurityGroups" | length') -eq 0 ]]; then
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textInfo "$regx: No Security Groups found in $regx" "$regx"
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continue
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fi
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SECURITYGROUP_NAMES=$(echo $SECURITYGROUPS | jq '.SecurityGroups|map({(.GroupId): (.GroupName)})|add')
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LIST_OF_SECURITYGROUPS=$(echo $SECURITYGROUP_NAMES | jq -r 'to_entries|sort_by(.key)|.[]|.key')
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for SG_ID in $LIST_OF_SECURITYGROUPS; do
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SG_NOT_USED=$($AWSCLI ec2 describe-network-interfaces $PROFILE_OPT --region $regx --filters "Name=group-id,Values=$SG_ID" --query "length(NetworkInterfaces)" --output text)
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# Default security groups can not be deleted, so draw attention to them
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if [[ $SG_NOT_USED -eq 0 ]];then
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GROUP_NAME=$(echo $SECURITYGROUP_NAMES | jq -r --arg id $SG_ID '.[$id]')
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if [[ $GROUP_NAME != "default" ]];
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then
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textFail "$regx: $SG_ID is not being used!" "$regx" "$SG_ID"
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else
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textInfo "$regx: $SG_ID is not being used - default security group" "$regx" "$SG_ID"
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fi
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else
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textPass "$regx: $SG_ID is being used" "$regx" "$SG_ID"
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fi
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done
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done
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}
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