mirror of
https://github.com/ghndrx/prowler.git
synced 2026-02-11 07:15:15 +00:00
55 lines
2.8 KiB
Bash
55 lines
2.8 KiB
Bash
#!/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_extra798="7.98"
|
|
CHECK_TITLE_extra798="[extra798] Check if Lambda functions have resource-based policy set as Public"
|
|
CHECK_SCORED_extra798="NOT_SCORED"
|
|
CHECK_CIS_LEVEL_extra798="EXTRA"
|
|
CHECK_SEVERITY_extra798="Critical"
|
|
CHECK_ASFF_RESOURCE_TYPE_extra798="AwsLambdaFunction"
|
|
CHECK_ALTERNATE_check798="extra798"
|
|
CHECK_SERVICENAME_extra798="lambda"
|
|
CHECK_RISK_extra798='Publicly accessible services could expose sensitive data to bad actors.'
|
|
CHECK_REMEDIATION_extra798='Grant usage permission on a per-resource basis and applying least privilege principle.'
|
|
CHECK_DOC_extra798='https://docs.aws.amazon.com/lambda/latest/dg/access-control-resource-based.html'
|
|
CHECK_CAF_EPIC_extra798='Infrastructure Security'
|
|
|
|
extra798(){
|
|
for regx in $REGIONS; do
|
|
LIST_OF_FUNCTIONS=$($AWSCLI lambda list-functions $PROFILE_OPT --region $regx --output text --query 'Functions[*].FunctionName' 2>&1)
|
|
if [[ $(echo "$LIST_OF_FUNCTIONS" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
|
|
textInfo "$regx: Access Denied trying to list functions" "$regx"
|
|
continue
|
|
fi
|
|
if [[ $LIST_OF_FUNCTIONS ]]; then
|
|
for lambdafunction in $LIST_OF_FUNCTIONS; do
|
|
# get the policy per function
|
|
FUNCTION_POLICY=$($AWSCLI lambda get-policy $PROFILE_OPT --region $regx --function-name $lambdafunction --query Policy --output text 2>/dev/null)
|
|
if [[ $FUNCTION_POLICY ]]; then
|
|
FUNCTION_POLICY_ALLOW_ALL=$(echo $FUNCTION_POLICY \
|
|
| jq '.Statement[] | select(.Effect=="Allow") | select(.Principal=="*" or .Principal.AWS=="*" or .Principal.CanonicalUser=="*")')
|
|
if [[ $FUNCTION_POLICY_ALLOW_ALL ]]; then
|
|
textFail "$regx: Lambda function $lambdafunction has a policy with public access" "$regx" "$lambdafunction"
|
|
else
|
|
textPass "$regx: Lambda function $lambdafunction has a policy resource-based policy and is not public" "$regx" "$lambdafunction"
|
|
fi
|
|
else
|
|
textPass "$regx: Lambda function $lambdafunction does not have resource-based policy" "$regx" "$lambdafunction"
|
|
fi
|
|
done
|
|
else
|
|
textInfo "$regx: No Lambda functions found" "$regx"
|
|
fi
|
|
done
|
|
}
|