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31 lines
1.8 KiB
Plaintext
31 lines
1.8 KiB
Plaintext
CHECK_ID_check38=""
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CHECK_TITLE_check38=""
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CHECK_SCORED_check38=""
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CHECK_TYPE_check38=""
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CHECK_ALTERNATE_check38="check38"
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check38(){
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# "Ensure a log metric filter and alarm exist for S3 bucket policy changes (Scored)"
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textTitle "$ID38" "$TITLE38" "SCORED" "LEVEL1"
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CLOUDWATCH_GROUP=$($AWSCLI cloudtrail describe-trails $PROFILE_OPT --region $REGION --query 'trailList[*].CloudWatchLogsLogGroupArn' --output text | tr ' ' '
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' | awk -F: '{ print $7 }')
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if [[ $CLOUDWATCH_GROUP ]];then
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for group in $CLOUDWATCH_GROUP; do
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CLOUDWATCH_LOGGROUP_REGION=$($AWSCLI cloudtrail describe-trails $PROFILE_OPT --region $REGION --query 'trailList[*].CloudWatchLogsLogGroupArn' --output text | awk -F: '{ print $4 }')
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METRICFILTER_SET=$($AWSCLI logs describe-metric-filters --log-group-name $group $PROFILE_OPT --region $CLOUDWATCH_LOGGROUP_REGION --query 'metricFilters' | grep -E 's3.amazonaws.com.*PutBucketAcl.*PutBucketPolicy.*PutBucketCors.*PutBucketLifecycle.*PutBucketReplication.*DeleteBucketPolicy.*DeleteBucketCors.*DeleteBucketLifecycle.*DeleteBucketReplication')
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if [[ $METRICFILTER_SET ]];then
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HAS_ALARM_ASSOCIATED=$($AWSCLI cloudwatch describe-alarms $PROFILE_OPT --region $CLOUDWATCH_LOGGROUP_REGION --query 'MetricAlarms[].MetricName' --output text | awk 'BEGIN {IGNORECASE=1}; /S3/ || /BucketPolicy/ || /BucketPolicies/;')
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if [[ $HAS_ALARM_ASSOCIATED ]];then
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textOK "CloudWatch group $group found with metric filters and alarms for S3 bucket policy changes"
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else
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textWarn "CloudWatch group $group found with metric filters but no alarms associated"
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fi
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else
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textWarn "CloudWatch group $group found but no metric filters or alarms associated"
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fi
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done
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else
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textWarn "No CloudWatch group found for CloudTrail events"
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fi
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}
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