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https://github.com/ghndrx/prowler.git
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89 lines
4.9 KiB
Bash
89 lines
4.9 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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# Checks that the correct mode (json-asff) has been specified if wanting to send check output to AWS Security Hub
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# and that Security Hub is enabled in the chosen region
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checkSecurityHubCompatibility(){
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local regx
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if [[ "${MODE}" != "json-asff" ]]; then
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echo -e "\n$RED ERROR!$NORMAL Output can only be sent to Security Hub when the output mode is json-asff, i.e. -M json-asff -S\n"
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EXITCODE=1
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exit $EXITCODE
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fi
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for regx in $REGIONS; do
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SECURITY_HUB_ENABLED=$($AWSCLI securityhub --region "$regx" $PROFILE_OPT describe-hub)
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if [[ -z "${SECURITY_HUB_ENABLED}" ]]; then
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echo -e "\n$RED ERROR!$NORMAL Security Hub is not enabled in $regx. Enable it by calling '$AWSCLI securityhub --region $regx $PROFILE_OPT enable-security-hub'\n"
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EXITCODE=1
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exit $EXITCODE
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fi
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done
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# Get unresolved findings
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SECURITY_HUB_PREVIOUS_FINDINGS=$($AWSCLI securityhub --region "$regx" $PROFILE_OPT get-findings --filters '{"GeneratorId":[{"Value": "prowler-","Comparison":"PREFIX"}],"WorkflowStatus":[{"Value": "RESOLVED","Comparison":"NOT_EQUALS"}]}' | jq -r ".Findings[] | {Id, GeneratorId, Workflow, Compliance}"| jq -cs)
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}
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resolveSecurityHubPreviousFails(){
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# Move previous findings to Workflow to RESOLVED (as prowler didn't re-detect them)
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PREVIOUS_FAILED_IDS=$(echo $SECURITY_HUB_PREVIOUS_FINDINGS | jq -c --arg parn "$product_arn" '.[] | select(.Compliance.Status==FAILED) | map({"Id": .Id, ProductArn: $parn} )');
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BATCH_UPDATE_RESULT=$($AWSCLI securityhub --region "$region" $PROFILE_OPT batch-update-findings --finding-identifiers "${PREVIOUS_FAILED_IDS}" --workflow '{"Status": "RESOLVED"}')
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# Check for success if updated
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if [[ ! -z "${BATCH_UPDATE_RESULT}" ]] && ! jq -e '.ProcessedFindings >= 1' <<< "${BATCH_UPDATE_RESULT}" > /dev/null 2>&1; then
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echo -e "\n$RED ERROR!$NORMAL Failed to update AWS Security Hub finding\n"
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fi
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}
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sendToSecurityHub(){
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local findings="$1"
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local region="$2"
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local finding_id=$(echo $findings | jq -r ".Id")
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local status=$(echo $findings | jq -r ".Compliance.Status")
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local product_arn=$(echo $findings | jq -r ".ProductArn")
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local generator_id=$(echo $findings | jq -r ".GeneratorId")
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PREVIOUS_FINDING=$(echo $SECURITY_HUB_PREVIOUS_FINDINGS | jq --arg finding "$generator_id" '.[] | select((.GeneratorId==$finding))' | jq -cs)
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if [[ $PREVIOUS_FINDING != "[]" ]]; then
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# Remove from previous findings to update (using generator)
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SECURITY_HUB_PREVIOUS_FINDINGS=$(echo $SECURITY_HUB_PREVIOUS_FINDINGS | jq -s --arg finding "$generator_id" '[ .[] | select((.GeneratorId!=$finding)) ]')
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SAME_STATUS=$(echo $PREVIOUS_FINDING | jq --arg status "$status" '.[] | select(.Compliance.Status!=$status)')
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SUPPRESSED=$(echo $PREVIOUS_FINDING | jq '.[] | select(.Workflow.Status=="SUPPRESSED")')
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# If are old non-resolved findings with different status, re-import it to update with previous Id
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if [[ ! -z $SAME_STATUS && -z $SUPPRESSED ]]; then
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PREVIOUS_FINDING_ID=$(echo $PREVIOUS_FINDING | jq '.[0].Id' );
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findings =$(echo $findings | jq --arg previous_id "$PREVIOUS_FINDING_ID" .[0].Id = previous_id)
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BATCH_IMPORT_RESULT=$($AWSCLI securityhub --region "$region" $PROFILE_OPT batch-import-findings --findings "${findings}")
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else
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PREVIOUS_FINDING_IDS=$(echo $PREVIOUS_FINDING | jq -c --arg parn "$product_arn" 'map({"Id": .Id, ProductArn: $parn} )');
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# Update to avoid being deleted after 90 dayss
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BATCH_UPDATE_RESULT=$($AWSCLI securityhub --region "$region" $PROFILE_OPT batch-update-findings --finding-identifiers "${PREVIOUS_FINDING_IDS}" --note '{"Text": "Finding re-detected by Prowler scan", "UpdatedBy": "prowler"}')
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fi
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else
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#If new, import it
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BATCH_IMPORT_RESULT=$($AWSCLI securityhub --region "$region" $PROFILE_OPT batch-import-findings --findings "${findings}")
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fi
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# Check for success if updated
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if [[ ! -z "${BATCH_UPDATE_RESULT}" ]] && ! jq -e '.ProcessedFindings >= 1' <<< "${BATCH_UPDATE_RESULT}" > /dev/null 2>&1; then
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echo -e "\n$RED ERROR!$NORMAL Failed to update AWS Security Hub finding\n"
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fi
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# Check for success if imported
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if [[ ! -z "${BATCH_IMPORT_RESULT}" ]] && ! jq -e '.SuccessCount == 1' <<< "${BATCH_IMPORT_RESULT}" > /dev/null 2>&1; then
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echo -e "\n$RED ERROR!$NORMAL Failed to send check output to AWS Security Hub\n"
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fi
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}
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