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prowler/checks/check_extra720
2018-04-09 15:09:30 -04:00

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#!/usr/bin/env bash
# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
CHECK_ID_extra720="7.20"
CHECK_TITLE_extra720="[extra720] Check if Lambda functions invoke API operations are being recorded by CloudTrail (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra720="NOT_SCORED"
CHECK_ALTERNATE_check720="extra720"
extra720(){
# "Check if Lambda functions invoke API operations are being recorded by CloudTrail (Not Scored) (Not part of CIS benchmark)"
for regx in $REGIONS; do
LIST_OF_FUNCTIONS=$($AWSCLI lambda list-functions $PROFILE_OPT --region $regx --query Functions[*].FunctionName --output text)
if [[ $LIST_OF_FUNCTIONS ]]; then
for lambdafunction in $LIST_OF_FUNCTIONS;do
LIST_OF_TRAILS=$($AWSCLI cloudtrail describe-trails $PROFILE_OPT --region $regx --query trailList[?HomeRegion==\`$regx\`].Name --output text)
if [[ $LIST_OF_TRAILS ]]; then
for trail in $LIST_OF_TRAILS; do
FUNCTION_ENABLED_IN_TRAIL=$($AWSCLI cloudtrail get-event-selectors $PROFILE_OPT --trail-name $trail --region $regx --query "EventSelectors[*].DataResources[?Type == \`AWS::Lambda::Function\`].Values" --output text |xargs -n1| grep -E "^arn:aws:lambda.*function:$lambdafunction$")
if [[ $FUNCTION_ENABLED_IN_TRAIL ]]; then
textPass "$regx: Lambda function $lambdafunction enabled in trail $trail" "$regx"
else
textFail "$regx: Lambda function $lambdafunction NOT enabled in trail $trail" "$regx"
fi
done
# LIST_OF_MULTIREGION_TRAILS=$($AWSCLI cloudtrail describe-trails $PROFILE_OPT --region $regx --query "trailList[?IsMultiRegionTrail == \`true\`].Name" --output text)
# if [[ $LIST_OF_MULTIREGION_TRAILS ]]; then
# for trail in $LIST_OF_MULTIREGION_TRAILS; do
# REGION_OF_TRAIL=$($AWSCLI cloudtrail describe-trails $PROFILE_OPT --region $regx --query "trailList[?IsMultiRegionTrail == \`true\` && Name == \`$trail\` ].HomeRegion" --output text)
# FUNCTION_ENABLED_IN_THIS_REGION=$($AWSCLI cloudtrail get-event-selectors $PROFILE_OPT --trail-name $trail --region $REGION_OF_TRAIL --query "EventSelectors[*].DataResources[?Type == \`AWS::Lambda::Function\`].Values" --output text |xargs -n1| grep -E "^arn:aws:lambda.*function:$lambdafunction$")
# if [[ $FUNCTION_ENABLED_IN_THIS_REGION ]]; then
# textPass "$regx: Lambda function $lambdafunction enabled in trail $trail" "$regx"
# else
# textFail "$regx: Lambda function $lambdafunction NOT enabled in trail $trail" "$regx"
# fi
# done
# else
# textFail "$regx: Lambda function $lambdafunction is not being recorded!" "$regx"
# fi
else
textFail "$regx: Lambda function $lambdafunction is not being recorded no CloudTrail found!" "$regx"
fi
done
else
textInfo "$regx: No Lambda functions found" "$regx"
fi
done
}