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55 lines
2.7 KiB
Plaintext
55 lines
2.7 KiB
Plaintext
CHECK_ID_check31=""
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CHECK_TITLE_check31=""
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CHECK_SCORED_check31=""
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CHECK_TYPE_check31=""
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CHECK_ALTERNATE_check31="check31"
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check31(){
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# "Ensure a log metric filter and alarm exist for unauthorized API calls (Scored)"
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textTitle "$ID31" "$TITLE31" "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 | tr ' ' '
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' | grep $group | 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' | awk '/UnauthorizedOperation/ || /AccessDenied/ {print $3}')
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METRICFILTER_SET=$($AWSCLI logs describe-metric-filters --log-group-name $group $PROFILE_OPT --region $CLOUDWATCH_LOGGROUP_REGION --output text | grep METRICFILTERS | awk 'BEGIN {IGNORECASE=1}; /UnauthorizedOperation/ || /AccessDenied/ {print $3};')
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if [[ $METRICFILTER_SET ]];then
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for metric in $METRICFILTER_SET; do
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metric_name=$($AWSCLI logs describe-metric-filters $PROFILE_OPT --region $CLOUDWATCH_LOGGROUP_REGION --log-group-name $group --filter-name-prefix $metric --output text --query 'metricFilters[0].metricTransformations[0].metricName')
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HAS_ALARM_ASSOCIATED=$($AWSCLI cloudwatch describe-alarms $PROFILE_OPT --region $CLOUDWATCH_LOGGROUP_REGION --query 'MetricAlarms[?MetricName==`'$metric_name'`]' --output text)
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if [[ $HAS_ALARM_ASSOCIATED ]];then
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CHECK31OK="$CHECK31OK $group:$metric"
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else
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CHECK31WARN="$CHECK31WARN $group:$metric"
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fi
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done
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else
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CHECK31WARN="$CHECK31WARN $group"
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fi
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done
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if [[ $CHECK31OK ]]; then
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for group in $CHECK31OK; do
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metric=${group#*:}
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group=${group%:*}
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textOK "CloudWatch group $group found with metric filter $metric and alarms set for Unauthorized Operation and Access Denied"
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done
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fi
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if [[ $CHECK31WARN ]]; then
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for group in $CHECK31WARN; do
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case $group in
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*:*) metric=${group#*:}
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group=${group%:*}
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textWarn "CloudWatch group $group found with metric filter $metric but no alarms associated"
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;;
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*) textWarn "CloudWatch group $group found but no metric filters or alarms associated"
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esac
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done
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fi
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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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