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e77cd6b2b2
* fix(extra715): Change lower case from bash variable expansion to tr command * fix: Change from bash variable expansion to tr command * Change the way to handle lower case
107 lines
5.8 KiB
Bash
107 lines
5.8 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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# Remediation:
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#
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# here URL to the relevand/official documentation
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#
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# here commands or steps to fix it if avalable, like:
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# aws logs put-metric-filter \
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# --region us-east-1 \
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# --log-group-name CloudTrail/MyCloudTrailLG \
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# --filter-name AWSCloudTrailChanges \
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# --filter-pattern '{ ($.eventName = CreateTrail) || ($.eventName = UpdateTrail) || ($.eventName = DeleteTrail) || ($.eventName = StartLogging) || ($.eventName = StopLogging) }' \
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# --metric-transformations metricName=CloudTrailEventCount,metricNamespace=CloudTrailMetrics,metricValue=1
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# CHECK_ID_checkN="N.N"
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# CHECK_TITLE_checkN="[checkN] Description "
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# CHECK_SCORED_checkN="NOT_SCORED"
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# CHECK_CIS_LEVEL_checkN="EXTRA"
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# CHECK_SEVERITY_checkNN="Medium"
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# CHECK_ASFF_RESOURCE_TYPE_checkN="AwsAccount" # Choose appropriate value from https://docs.aws.amazon.com/securityhub/latest/userguide/securityhub-findings-format.html#asff-resources
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# CHECK_ALTERNATE_checkN="extraN"
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# CHECK_SERVICENAME_checkN="service" # get service short name from `curl -s https://api.regional-table.region-services.aws.a2z.com/index.json | jq -r '.prices[] | .id' | awk -F: '{ print $1 }' | sort -u`
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# CHECK_RISK_checkN=""
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# CHECK_REMEDIATION_checkN=""
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# CHECK_DOC_checkN=""
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# CHECK_CAF_EPIC_checkN=""
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# General comments
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# ----------------
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# Do not add double quotes (") arround variable ${PROFILE_OPT} because this variable holds "--profile <profile-name>" and we need to read it as it is
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# Always check for AccessDenied|UnauthorizedOperation|AuthorizationError after AWS CLI command, using "2>&1" at the end
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# Avoid execute the same AWS CLI command again to check different attribute:
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# - Return all attributes on "--query"
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# - Use "read -r" to get all individual attributes
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# - Use "here-string" (<<<) when is necessary to interate through AWS CLI output with multiple attributes on the same line
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# - Here-string variable must be enclosed with double quotes, like "${LIST_OF_PUBLIC_INSTANCES}"
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# - See "Example of regional resource" below about how to do it
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# When an attribute doesn't exist, AWS CLI "--query" always return "none" if output is json or "None" if output is text
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# Use bash features to handle variable:
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# - ${var:N} : Return string from position 'N'
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# - ${var:N:len} : Return 'len' characters from position 'N'
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# - ${var^^} : Convert to upper-case all characters
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# - ${var,,} : Convert to lower-case all characters
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# - ATTENTION: macOS original bash version "GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin19)" doesn't support some variable expansion above.
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# Please make sure to test it.
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# - For more examples and how to use it please refer to https://www.gnu.org/software/bash/manual/bash.html#Shell-Parameter-Expansion
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# Check code with ShellCheck for best practices:
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# - https://www.shellcheck.net/
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# - https://github.com/koalaman/shellcheck#user-content-in-your-editor
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# Example of regional resource
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# extraN(){
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# # "Description "
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# textInfo "Looking for instances in all regions... "
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# for regx in ${REGIONS}; do
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# LIST_OF_PUBLIC_INSTANCES=$("${AWSCLI}" ec2 describe-instances ${PROFILE_OPT} --region "${regx}" --query 'Reservations[*].Instances[?PublicIpAddress].[InstanceId,PublicIpAddress]' --output text 2>&1)
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# if [[ $(echo "${LIST_OF_PUBLIC_INSTANCES}" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
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# textInfo "${regx}: Access Denied trying to list EC2 Instances" "${regx}"
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# continue
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# fi
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# if [[ "${LIST_OF_PUBLIC_INSTANCES}" != "" && "${LIST_OF_PUBLIC_INSTANCES,,}" != "none" ]]; then
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# while read -r INSTANCE_ID PUBLIC_IP; do
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# textFail "${regx}: Instance: ${INSTANCE_ID} at IP: ${PUBLIC_IP} is internet-facing!" "${regx}" "${INSTANCE_ID}"
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# done <<< "${LIST_OF_PUBLIC_INSTANCES}"
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# else
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# textPass "${regx}: no Internet Facing EC2 Instances found" "${regx}"
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# fi
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# done
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# }
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# Example of global resource
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# extraN(){
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# # "Description "
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# LIST_DISTRIBUTIONS=$("${AWSCLI}" cloudfront list-distributions ${PROFILE_OPT} --query 'DistributionList.Items[*].Id' --output text 2>&1)
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# if [[ $(echo "${LIST_DISTRIBUTIONS}" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
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# textInfo "${REGION}: Access Denied trying to list distributions" "${REGION}"
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# return
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# fi
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# if [[ "${LIST_DISTRIBUTIONS}" != "" && "${LIST_DISTRIBUTIONS,,}" != "none" ]]; then
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# for dist in ${LIST_DISTRIBUTIONS}; do
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# GEO_ENABLED=$("${AWSCLI}" cloudfront get-distribution-config $PROFILE_OPT --id "${dist}" --query 'DistributionConfig.Restrictions.GeoRestriction.RestrictionType' --output text 2>&1)
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# if [[ $(echo "${GEO_ENABLED}" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
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# textInfo "${REGION}: Access Denied trying to get distribution config for ${dist}" "${REGION}"
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# continue
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# fi
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# if [[ "${GEO_ENABLED,,}" == "none" ]]; then
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# textFail "${REGION}: CloudFront distribution ${dist} has not Geo restrictions" "${REGION}" "${dist}"
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# else
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# textPass "${REGION}: CloudFront distribution ${dist} has Geo restrictions enabled" "${REGION}" "${dist}"
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# fi
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# done
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# else
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# textInfo "${REGION}: No CloudFront distributions found"
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# fi
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# }
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