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67 lines
3.5 KiB
Bash
67 lines
3.5 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2019) 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_check24="2.4"
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CHECK_TITLE_check24="[check24] Ensure CloudTrail trails are integrated with CloudWatch Logs"
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CHECK_SCORED_check24="SCORED"
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CHECK_CIS_LEVEL_check24="LEVEL1"
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CHECK_SEVERITY_check24="Low"
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CHECK_ASFF_TYPE_check24="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
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CHECK_ASFF_RESOURCE_TYPE_check24="AwsCloudTrailTrail"
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CHECK_ALTERNATE_check204="check24"
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CHECK_ASFF_COMPLIANCE_TYPE_check24="ens-op.exp.8.aws.cw.1"
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CHECK_SERVICENAME_check24="cloudtrail"
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CHECK_RISK_check24='Sending CloudTrail logs to CloudWatch Logs will facilitate real-time and historic activity logging based on user; API; resource; and IP address; and provides opportunity to establish alarms and notifications for anomalous or sensitivity account activity.'
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CHECK_REMEDIATION_check24='Validate that the trails in CloudTrail has an arn set in the CloudWatchLogsLogGroupArn property.'
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CHECK_DOC_check24='https://docs.aws.amazon.com/awscloudtrail/latest/userguide/send-cloudtrail-events-to-cloudwatch-logs.html'
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CHECK_CAF_EPIC_check24='Logging and Monitoring'
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check24(){
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trail_count=0
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# "Ensure CloudTrail trails are integrated with CloudWatch Logs (Scored)"
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for regx in $REGIONS; do
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TRAILS_AND_REGIONS=$($AWSCLI cloudtrail describe-trails $PROFILE_OPT --region $regx --query 'trailList[*].{Name:TrailARN, HomeRegion:HomeRegion}' --output text 2>&1 | tr " " ',')
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if [[ $(echo "$TRAILS_AND_REGIONS" | grep AccessDenied) ]]; then
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textInfo "$regx: Access Denied trying to describe trails" "$regx" "$trail"
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continue
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fi
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if [[ $TRAILS_AND_REGIONS ]]; then
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for reg_trail in $TRAILS_AND_REGIONS; do
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TRAIL_REGION=$(echo $reg_trail | cut -d',' -f1)
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if [ $TRAIL_REGION != $regx ]; then # Only report trails once in home region
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continue
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fi
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trail=$(echo $reg_trail | cut -d',' -f2)
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trail_count=$((trail_count + 1))
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LATESTDELIVERY_TIMESTAMP=$($AWSCLI cloudtrail get-trail-status --name $trail $PROFILE_OPT --region $TRAIL_REGION --query 'LatestCloudWatchLogsDeliveryTime' --output text|grep -v None)
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if [[ ! $LATESTDELIVERY_TIMESTAMP ]];then
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textFail "$TRAIL_REGION: $trail trail is not logging in the last 24h or not configured (it is in $TRAIL_REGION)" "$TRAIL_REGION" "$trail"
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else
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LATESTDELIVERY_DATE=$(timestamp_to_date $LATESTDELIVERY_TIMESTAMP)
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HOWOLDER=$(how_older_from_today $LATESTDELIVERY_DATE)
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if [ $HOWOLDER -gt "1" ];then
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textFail "$TRAIL_REGION: $trail trail is not logging in the last 24h or not configured" "$TRAIL_REGION" "$trail"
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else
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textPass "$TRAIL_REGION: $trail trail has been logging during the last 24h" "$TRAIL_REGION" "$trail"
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fi
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fi
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done
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fi
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done
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if [[ $trail_count == 0 ]]; then
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textFail "$REGION: No CloudTrail trails were found in the account" "$REGION" "$trail"
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fi
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}
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