mirror of
https://github.com/ghndrx/prowler.git
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Adding insecure SSL checks for CloudFront and CLB/ALB
(cherry picked from commit c9a60c07a2b5497cbed2d70c53821d826171dd68)
This commit is contained in:
jonjozwiak
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checks/check_extra791
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checks/check_extra791
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#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2018) 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_extra791="7.91"
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CHECK_TITLE_extra791="[extra791] Check if CloudFront distributions are using deprecated SSL protocols"
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CHECK_SCORED_extra791="NOT_SCORED"
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CHECK_TYPE_extra791="EXTRA"
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CHECK_ALTERNATE_check791="extra791"
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extra791(){
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LIST_OF_DISTRIBUTIONS=$($AWSCLI cloudfront list-distributions --query 'DistributionList.Items[*].Id' $PROFILE_OPT --output text|grep -v ^None)
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if [[ $LIST_OF_DISTRIBUTIONS ]];then
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for dist in $LIST_OF_DISTRIBUTIONS; do
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CHECK_ORIGINSSLPROTOCOL_STATUS=$($AWSCLI cloudfront get-distribution --id $dist --query Distribution.DistributionConfig.Origins.Items[].CustomOriginConfig.OriginSslProtocols.Items $PROFILE_OPT --output text)
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if [[ $CHECK_ORIGINSSLPROTOCOL_STATUS == *"SSLv2"* ]] || [[ $CHECK_ORIGINSSLPROTOCOL_STATUS == *"SSLv3"* ]]; then
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textFail "CloudFront distribution $dist is using a deprecated SSL protocol!" "$regx"
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else
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textPass "CloudFront distribution $dist is not using a deprecated SSL protocol" "$regx"
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fi
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done
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else
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textInfo "No CloudFront distributions found" "$regx"
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fi
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}
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104
checks/check_extra792
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checks/check_extra792
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#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2018) 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_extra792="7.87"
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CHECK_TITLE_extra792="[extra792] Check if Elastic Load Balancers have insecure SSL ciphers (Not Scored) (Not part of CIS benchmark)"
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CHECK_SCORED_extra792="NOT_SCORED"
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CHECK_TYPE_extra792="EXTRA"
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CHECK_ALTERNATE_check792="extra792"
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extra792(){
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# "Check if Elastic Load Balancers have insecure SSL ciphers (Not Scored) (Not part of CIS benchmark)"
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for regx in $REGIONS; do
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LIST_OF_ELBS=$($AWSCLI elb describe-load-balancers $PROFILE_OPT --region $regx --query 'LoadBalancerDescriptions[*].LoadBalancerName' --output text|xargs -n1)
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LIST_OF_ELBSV2=$($AWSCLI elbv2 describe-load-balancers $PROFILE_OPT --region $regx --query 'LoadBalancers[?(Type == `application`)].LoadBalancerArn' --output text|xargs -n1)
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if [[ $LIST_OF_ELBS || $LIST_OF_ELBSV2 ]]; then
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if [[ $LIST_OF_ELBS ]]; then
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# https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-ssl-security-policy.html#ssl-ciphers
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# https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-security-policy-table.html
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ELBSECUREPOLICIES=("ELBSecurityPolicy-2016-08" "ELBSecurityPolicy-TLS-1-2-2017-01" "ELBSecurityPolicy-TLS-1-1-2017-01")
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ELBSECURECIPHERS=("Protocol-TLSv1.2" "Protocol-TLSv1.1" "Protocol-TLSv1" "ECDHE-ECDSA-AES128-GCM-SHA256" "ECDHE-RSA-AES128-GCM-SHA256" "ECDHE-ECDSA-AES128-SHA256" "ECDHE-RSA-AES128-SHA256" "ECDHE-ECDSA-AES128-SHA" "ECDHE-RSA-AES128-SHA" "ECDHE-ECDSA-AES256-GCM-SHA384" "ECDHE-RSA-AES256-GCM-SHA384" "ECDHE-ECDSA-AES256-SHA384" "ECDHE-RSA-AES256-SHA384" "ECDHE-RSA-AES256-SHA" "ECDHE-ECDSA-AES256-SHA" "AES128-GCM-SHA256" "AES128-SHA256" "AES128-SHA" "AES256-GCM-SHA384" "AES256-SHA256" "AES256-SHA" "Server-Defined-Cipher-Order")
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for elb in $LIST_OF_ELBS; do
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ELB_POLICIES=$($AWSCLI elb describe-load-balancers --load-balancer-name $elb --query "LoadBalancerDescriptions[0].ListenerDescriptions[*].PolicyNames" --output text)
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passed=true
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for policy in $ELB_POLICIES; do
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# Check for secure default policy
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REFPOLICY=$($AWSCLI elb describe-load-balancer-policies $PROFILE_OPT --region $regx --load-balancer-name $elb --policy-name $policy --query "PolicyDescriptions[0].PolicyAttributeDescriptions[?(AttributeName == 'Reference-Security-Policy')].AttributeValue" --output text)
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if [[ -n "$REFPOLICY" ]]; then
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if array_contains ELBSECUREPOLICIES "$REFPOLICY"; then
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continue # Passed for this listener/policy
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else
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passed=false
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fi
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else
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# A custom policy is in use. Check Ciphers
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CIPHERS=$($AWSCLI elb describe-load-balancer-policies $PROFILE_OPT --region $regx --load-balancer-name $elb --policy-name $policy --query "PolicyDescriptions[0].PolicyAttributeDescriptions[?(AttributeValue == 'true')].AttributeName" --output text)
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for cipher in $CIPHERS; do
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if array_contains ELBSECURECIPHERS "$cipher"; then
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continue
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else
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passed=false
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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 $passed; then
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textPass "$regx: $elb has no insecure SSL ciphers" "$regx"
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else
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textFail "$regx: $elb has insecure SSL ciphers" "$regx"
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fi
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done
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fi
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if [[ $LIST_OF_ELBSV2 ]]; then
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# NOTE - ALBs do NOT support custom security policies
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# https://docs.aws.amazon.com/elasticloadbalancing/latest/application/create-https-listener.html
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ELBV2SECUREPOLICIES=("ELBSecurityPolicy-2016-08" "ELBSecurityPolicy-TLS-1-1-2017-01" "ELBSecurityPolicy-TLS-1-2-2017-01" "ELBSecurityPolicy-TLS-1-2-Ext-2018-06" "ELBSecurityPolicy-FS-2018-06" "ELBSecurityPolicy-FS-1-1-2019-08" "ELBSecurityPolicy-FS-1-2-2019-08" "ELBSecurityPolicy-FS-1-2-Res-2019-08" "ELBSecurityPolicy-2015-05")
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for elbarn in $LIST_OF_ELBSV2; do
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passed=true
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elbname=$(echo $elbarn | awk -F 'loadbalancer/app/' '{print $2}' | awk -F '/' '{print $1}')
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ELBV2_SSL_POLICIES=$($AWSCLI elbv2 describe-listeners $PROFILE_OPT --region $regx --load-balancer-arn $elbarn --query 'Listeners[*].SslPolicy' --output text)
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for policy in $ELBV2_SSL_POLICIES; do
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if array_contains ELBV2SECUREPOLICIES "$policy"; then
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continue # Passed for this listener/policy
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else
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passed=false
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fi
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done
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if $passed; then
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textPass "$regx: $elbname has no insecure SSL ciphers" "$regx"
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else
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textFail "$regx: $elbname has insecure SSL ciphers" "$regx"
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fi
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done
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fi
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else
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textInfo "$regx: No ELBs found" "$regx"
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fi
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done
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}
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array_contains () {
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local array="$1[@]"
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local seeking=$2
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local in=1
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for element in "${!array}"; do
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if [[ $element == "$seeking" ]]; then
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in=0
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break
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fi
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done
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return $in
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}
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