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53 lines
3.0 KiB
Bash
53 lines
3.0 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2019) 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_extra762="7.62"
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CHECK_TITLE_extra762="[extra762] Find obsolete Lambda runtimes "
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CHECK_SCORED_extra762="NOT_SCORED"
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CHECK_CIS_LEVEL_extra762="EXTRA"
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CHECK_SEVERITY_extra762="Medium"
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CHECK_ASFF_RESOURCE_TYPE_extra762="AwsLambdaFunction"
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CHECK_ALTERNATE_check762="extra762"
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CHECK_SERVICENAME_extra762="lambda"
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CHECK_RISK_extra762='If you have functions running on a runtime that will be deprecated in the next 60 days; Lambda notifies you by email that you should prepare by migrating your function to a supported runtime. In some cases; such as security issues that require a backwards-incompatible update; or software that does not support a long-term support (LTS) schedule; advance notice might not be possible. After a runtime is deprecated; Lambda might retire it completely at any time by disabling invocation. Deprecated runtimes are not eligible for security updates or technical support.'
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CHECK_REMEDIATION_extra762='Test new runtimes as they are made available. Implement them in production as soon as possible.'
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CHECK_DOC_extra762='https://docs.aws.amazon.com/lambda/latest/dg/runtime-support-policy.html'
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CHECK_CAF_EPIC_extra762='Infrastructure Security'
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extra762(){
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# regex to match OBSOLETE runtimes in string functionName%runtime
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# https://docs.aws.amazon.com/lambda/latest/dg/runtime-support-policy.html
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OBSOLETE='%(nodejs4.3|nodejs4.3-edge|nodejs6.10|nodejs8.10|dotnetcore1.0|dotnetcore2.0)'
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for regx in $REGIONS; do
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LIST_OF_FUNCTIONS=$($AWSCLI lambda list-functions $PROFILE_OPT --region $regx --output text --query 'Functions[*].{R:Runtime,N:FunctionName}' 2>&1| tr "\t" "%" )
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if [[ $(echo "$LIST_OF_FUNCTIONS" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
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textInfo "$regx: Access Denied trying to list functions" "$regx"
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continue
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fi
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if [[ $LIST_OF_FUNCTIONS ]]; then
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for lambdafunction in $LIST_OF_FUNCTIONS;do
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fname=$(echo "$lambdafunction" | cut -d'%' -f1)
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runtime=$(echo "$lambdafunction" | cut -d'%' -f2)
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if echo "$lambdafunction" | grep -Eq $OBSOLETE ; then
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textFail "$regx: Obsolete runtime: ${runtime} used by: ${fname}" "$regx" "${fname}"
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else
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textPass "$regx: Supported runtime: ${runtime} used by: ${fname}" "$regx" "${fname}"
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fi
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done
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else
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textInfo "$regx: No Lambda functions found" "$regx"
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fi
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done
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}
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