Author = https://martinmueller.dev
An AWS CDK custom construct for deploying Prowler to your AWS Account. The following description about Prowler is taken from https://github.com/prowler-cloud/prowler
Prowler is a security tool to perform AWS security best practices assessments, audits, incident response, continuous monitoring, hardening and forensics readiness. It contains all CIS controls listed here https://d0.awsstatic.com/whitepapers/compliance/AWS_CIS_Foundations_Benchmark.pdf and more than 100 additional checks that help on GDPR, HIPAA …
It generates security html results which are stored in an s3 bucket:
And in your Codebuild Report group:
The current Prowler version is 2.7.0
If you just want to make the Prowler security checks in your account try my Prowler AWS Marketplace AMI. With just $1 Prowler will do over 180 security checks across a huge amount of AWS services in all your regions. Don't forget the terminate the Ec2 instance when the Prowler stack got created for not paying more than that $1 :).
With buying the AMI you support my on my passion for creating open source products like this cdk-prowler construct. Furthermore you enable me to work on future features like mentioned in the Planned Features section. Thank you so much :) !
import { ProwlerAudit } from 'cdk-prowler';
...
const app = new App();
const stack = new Stack(app, 'ProwlerAudit-stack');
new ProwlerAudit(stack, 'ProwlerAudit');
Curious how I did the diagram? Have a look here https://martinmueller.dev/cdk-dia-eng .
cdk-prowler supports some properties to tweak your stack. Like for running a Cloudwatch schedule to regualary run the Prowler scan with a defined cron expression.
Creates a CodeBuild project to audit an AWS account with Prowler and stores the html report in a S3 bucket.
This will run onece at the beginning and on a schedule afterwards. Partial contribution from https://github.com/stevecjones
import { ProwlerAudit } from 'cdk-prowler'
new ProwlerAudit(parent: Stack, id: string, props?: ProwlerAuditProps)- Type:
@aws-cdk/core.Stack
- Type:
string
public readonly codebuildProject: Project;public readonly enableScheduler: boolean;- Type:
boolean
public readonly logsRetentionInDays: RetentionDays;public readonly prowlerOptions: string;- Type:
string
public readonly prowlerScheduler: string;- Type:
string
public readonly prowlerVersion: string;- Type:
string
public readonly serviceName: string;- Type:
string
import { ProwlerAuditProps } from 'cdk-prowler'
const prowlerAuditProps: ProwlerAuditProps = { ... }public readonly additionalS3CopyArgs: string;- Type:
string
An optional parameter to add to the S3 bucket copy command.
public readonly allowlist: Asset;- Type:
@aws-cdk/aws-s3-assets.Asset - Default: undefined
An Prowler-specific Allowlist file.
If a value is provided then this is passed to Prowler on runs using the '-w' flag. If no value is provided, the -w parameter is not used. If you provide an asset that is zipped, it must contain an 'allowlist.txt' file which will be passed to Prowler.
public readonly enableScheduler: boolean;- Type:
boolean - Default: false
enables the scheduler for running prowler periodically.
Together with prowlerScheduler.
public readonly logsRetentionInDays: RetentionDays;- Type:
@aws-cdk/aws-logs.RetentionDays - Default: : 3
Specifies the number of days you want to retain CodeBuild run log events in the specified log group.
Junit reports are kept for 30 days, HTML reports in S3 are not deleted
public readonly prowlerOptions: string;- Type:
string - Default: '-M text,junit-xml,html,csv,json'
Options to pass to Prowler command, make sure at least -M junit-xml is used for CodeBuild reports.
Use -r for the region to send API queries, -f to filter only one region, -M output formats, -c for comma separated checks, for all checks do not use -c or -g, for more options see -h. For a complete assessment use "-M text,junit-xml,html,csv,json", for SecurityHub integration use "-r region -f region -M text,junit-xml,html,csv,json,json-asff -S -q"
public readonly prowlerScheduler: string;- Type:
string - Default: 'cron(0 22 ** ? *)'
The time when Prowler will run in cron format.
Default is daily at 22:00h or 10PM 'cron(0 22 ** ? *)', for every 5 hours also works 'rate(5 hours)'. More info here https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html.
public readonly prowlerVersion: string;- Type:
string - Default: 2.5.0
Specifies the concrete Prowler version.
public readonly reportBucket: IBucket;- Type:
@aws-cdk/aws-s3.IBucket
An optional S3 bucket to store the Prowler reports.
public readonly reportBucketPrefix: string;- Type:
string
An optional prefix for the report bucket objects.
public readonly serviceName: string;- Type:
string - Default: : prowler
Specifies the service name used within component naming.
By providing your own Bucket you can have the CodeBuild project drop the Prowler results in another account. Make sure that you have your Bucket policy setup to allow the account running the Prowler reports access to writing those record.
Additionally, you will probably want to provide an additionalS3CopyArgs: '--acl bucket-owner-full-control' to ensure that those object can be read by the account owner.
- Supporting AWS SecurityHub https://github.com/prowler-cloud/prowler#security-hub-integration
- Triggering an event with SNS when prowler finishes the run
- AMI EC2 executable
yes | yarn destroy && yarn deploy --require-approval neverRerun Prowler on deploy
yarn deploy --require-approval never -c reRunProwler=true- My friend and fellaw ex colleague Tony de la Fuente (https://github.com/toniblyx https://twitter.com/ToniBlyx) for developing such a cool security tool as Prowler
- As always to the amazing CDK / Projen Community. Join us on Slack!
- Projen project and the community around it