1. Foreman OpenSCAP manual

This plugin enables Foreman to receive automated vulnerability assessment and security compliance audits from Foreman hosts. You can upload SCAP compliance contents, create compliance policies out of them and assign the policies to hosts or hostgroups. foreman_openscap plugin provides three default SCAP contents, so you could start testing security compliance on RHEL6/7 and Fedora.

OpenSCAP reports (aka ARF reports) will help you find vulnerabilities on your hosts and also suggest remediation plan to fix those vulnerabilities. OpenScap report

Foreman OpenSCAP plugin is made of 4 components:

  • foreman_openscap - Foreman plugin which creates and persists SCAP content, compliance policy and ARF report objects.
  • smart_proxy_openscap - Smart-Proxy plugin which validates SCAP content from Foreman, distributes SCAP content to clients and posts ARF reports from client hosts to Foreman
  • foreman_scap_client - A client script which runs OpenSCAP scan and uploads the scan report to the Smart-Proxy
  • puppet-foreman_scap_client - A puppet module which configures foreman_scap_client

1.1 OpenSCAP basic concepts

There are four basic concepts (entities) in OpenSCAP plug-in: SCAP Contents, Compliance Policies, ARF Reports and Tailoring Files.

SCAP Content represents SCAP DataStream XML file as defined by SCAP 1.2 standard. DataStream file contains implementation of compliance, configuration or security baselines. Users are advised to acquire examplary baseline by installing scap-security-guide package. DataStream file usualy contains multiple XCCDF Profiles. Each for different security target. The content of DataStream file can be inspected by oscap tool from openscap-scanner package. (XCCDF = Extensible Configuration Checklist Description Format, XCCDF profile = A checklist which audit specific security target)

Tailoring File is a XML file very much like SCAP Content. It represents a customization of compliance defined in a SCAP Content XML file. Additional details and instructions how to create such a file are available in the official openscap documentation.

Compliance Policy is high level concept of a baseline applied to the infrastructure. Compliance policy is defined by user on web interface. Users may assign following information to the policy:

  • SCAP Content
  • XCCDF Profile from particular SCAP Content
  • Tailoring File
  • XCCDF Profile from a Tailoring File
  • Hostgroups that should comply with the policy
  • Schedule - the period in which the audit shall occur

ARF Report is XML output of single scan occurrence per single host. Asset Reporting File format is defined by SCAP 1.2 standard. Foreman plug-in stores the ARF Reports in database for later inspections.

1.2 Release notes

Compatibility matrix

Foreman version Plugin version Proxy version Client version
= 1.7 0.3.4 0.3.1 0.1.1
>= 1.8 0.4.1 0.4.0 0.1.1
>= 1.11 0.5.0 0.5.0 0.1.2
>= 1.13 0.6.0 0.6.0 0.2.0

2. Installation

There are a few components to install:

  • Foreman OpenSCAP (foreman_openscap)
  • Smart Proxy OpenSCAP (smart_proxy_openscap)
  • foreman_scap_client
  • puppet-foreman_scap_client.

2.1 Installing foreman_openscap

The easiest and recommended way is using foreman-installer. It’s as easy as running this command

> foreman-installer --enable-foreman-plugin-openscap

If you prefer the manual way, you can install it from package like this:

> yum install tfm-rubygem-foreman_openscap
> foreman-rake db:migrate
> foreman-rake db:seed
> service httpd reload

If your distribution does not provide openscap package recent enough, you can get it from https://copr.fedorainfracloud.org/coprs/isimluk/OpenSCAP/

Please refer to the Foreman plugin manual for more information about installing Foreman plugins.

2.2 Installing smart_proxy_openscap

The easiest and recommended way is using foreman-installer. It’s as easy as running this command

> foreman-installer --enable-foreman-proxy-plugin-openscap

If you run Smart-Proxy with Foreman on the same host you can combine it with –enable-foreman-plugin-openscap option.

If you prefer the manual way, install this package on the Smart-Proxy server:

> yum install rubygem-smart_proxy_openscap

Edit /etc/foreman-proxy/settings.d/openscap.yml with the appropriate settings

---
:enabled: true

# Log file for the forwarding script.
:openscap_send_log_file: /var/log/foreman-proxy/openscap-send.log

# Directory where OpenSCAP audits are stored
# before they are forwarded to Foreman
:spooldir: /var/spool/foreman-proxy/openscap

# Directory where OpenSCAP content XML are stored
# So we will not request the XML from Foreman each time
:contentdir: /var/lib/openscap/content

# Directory where OpenSCAP report XML are stored
# So Foreman can request arf xml reports
:reportsdir: /usr/share/foreman-proxy/openscap/reports

# Directory where OpenSCAP report XML are stored
# In case sending to Foreman succeeded, yet failed to save to reportsdir
:failed_dir: /usr/share/foreman-proxy/openscap/failed

2.3 Installing puppet-foreman_scap_client

puppet module install theforeman-foreman_scap_client

This puppet module will automatically install foreman_scap_client (if not installed) and configure the client’s /etc/foreman_scap_client/config.yaml with all parameters needed for the operation of foreman_scap_client. The module is used by Foreman to automate the configuration and triggering of foreman_openscap_client, so you should install it in all puppet environments that your hosts use.

Once installed, Foreman will assign this class to hosts or host groups and populate the necessary parameters based on the settings you apply in Foreman under COMPLIANCE.

Starting with puppet-foreman_scap_client 0.3.14 shipped with Foreman 1.14 the Foreman plugins yum repo can be set up if you define at least Foreman’s major release version. This repository is needed to install foreman_scap_client, witch will fail otherwise. You can leave all other values to their default unless otherwise needed (Eg, your own yum repository mirror).

Minimum parameters

  • foreman_repo_rel - To manage the foreman-plugins yum repo and set to release version. Eg ‘1.15’, it should match your Foreman version.

Extended parameters

  • foreman_repo_key - RPM Key source file for foreman-plugins repo. Note: Currently, packages are not signed. Unless set to an alternative file source, URL will be used.
  • foreman_repo_src - Alternative baseurl for the forman plugins repository
  • foreman_repo_gpg_chk - Enable / disable GPG checks. Directly passed to Yumrepo resource

3. Upgrading from 0.4.x

As with any Foreman plugin, the recommended upgrade path is done via yum upgrade. This will ensure that all of the packages are with the right version, dependencies and data migrations.

Note: ARF reports are not automatically migrated and need a manual step

3.1 Migrating ARF reports from 0.4.x

ARF reports in 0.5.x and Foreman > 1.11 are now part of Foreman’s reports (Reports STI), and the physical ARF report XML is now saved at the Smart-Proxy.

This requires a special migration, which needs both Foreman and Smart-Proxy up and running, with latest respective OpenSCAP plugins installed.

Since we cannot assure this during upgrade, migration of ARF reports has moved to a rake task which should be performed after upgrading.

To upgrade ARF reports from 0.4.x to 0.5.x:

  • Upgrade foreman_openscap to version 0.5.x
  • Upgrade smart_proxy_openscap to version 0.5.x
  • Run foreman-rake db:migrate to ensure all other data has been migrated
  • Restart Foreman and Smart-Proxy
  • Run foreman-rake foreman_openscap:migrate[<proxy_id>] (Where <proxy_id> is the id of the Smart-Proxy with OpenSCAP feature).

Notes: to find out your Smart-Proxy id you can either run hammer proxy list or pick the Smart-Proxy’s id from the url in web UI. please note it should be inside the square brackets

Process: During the ARF reports migration, the old ARF reports are fetched from the Foreman database, sent to the Smart-Proxy for re-processing and saving and are sent back to the Foreman in their new format - while keeping their original data.

Once the old ARF report has successfully migrated, it is deleted from the old table.

4. Usage

This chapter covers features that you can use in terms of Foreman and OpenSCAP integration. Everything described below assumes you’ve sucessfully installed foreman_openscap, smart_proxy_openscap and puppet-foreman_scap_client is available on your Puppet master and Foreman.

Please note: smart_proxy_openscap is required for the normal operation of foreman_openscap

You would usually start with uploading SCAP contents, then create policies of those SCAP contents and assign the policy to hosts or hostgroups. The puppet module will install foreman_scap_client and configure it with the needed policy information. The puppet module also adds a cron line, which runs the SCAP client at the schedule select when creating the policy.

4.1 Creating SCAP content

4.1.1 Creating default SCAP content

When installing foreman_openscap from RPM, we also add default SCAP content provided by scap-security-guide.

In previous versions, the default SCAP content was added via seed task.

In version >= 0.5.x, we are processing all of OpenSCAP content and reports in the Proxy.

And we are unsure if during installation the smart_proxy_openscap plugin is installed and enabled, so we can not seed the default SCAP content

  • hence the auto SCAP content generation is now obsolete.

Instead of auto-generating default SCAP content when installing foreman_openscap, you can now accomplish that with a rake task.

Creating default SCAP content

  • Install smart_proxy_openscap on one (or more) of your proxies
  • Refresh features of that proxy (so it will register with OpenSCAP feature on the Foreman)
  • from terminal run foreman-rake foreman_openscap:bulk_upload:default

This will search for scap-security-guide SCAP contents and create SCAP content on the Foreman.

4.1.2 Uploading SCAP content

Besides the default SCAP content, you can also upload your own SCAP content.

Access SCAP contents - Hosts -> Compliance -> SCAP Contents

Create SCAP Content - You can upload any valid OpenSCAP DataStream file

(After upload, SCAP content is validated at the Smart-Proxy and SCAP profiles are extracted) New SCAP Content

4.2 Creating policy wizard

  • Name your policy
  • Choose which SCAP content & SCAP profile to apply
  • Choose schedule when to run this policy
  • Select which locations / organizations this policy belongs to, if enabled
  • Choose which hostgroups you wish apply this policy

Policy Wizard

4.3 Assigning policy to host

You can assign a policy in two ways:

  • By assigning a policy to hostgroup(s) when creating / editing a policy. All hosts which belong to that hostgroup will automatically be assigned to the policy.
  • By assigning a policy to host(s) via hosts index: In the hosts index, choose the hosts you wish to assign a policy. Click on ‘Select Action’ and choose: “Assign Compliance Policy” and choose which policy to assign to the selected hosts.

Assign Hosts

4.4 ARF Reports

You can access the generated reports via Hosts -> Compliance -> Reports ARF reports index

Report page gives information about individual rules that were checked during scan. Here you can download the actual report generated by OpenSCAP in HTML or as XML in bzip archive. View ARF report

Clicking on “View full report” at the top of the page will lead you to the actual security audit report generated by OpenSCAP, with detailed information on the host’s security check and suggested remediation. ARF report

4.5 Tailoring files ( foreman_openscap >= 0.6.5 )

Using a Tailoring File effectively allows you to modify a policy. You can assign a Tailoring File to a Policy when creating / updating a policy. Because Tailoring File may contain multiple profiles, you have to select your modified profile as well.

4.5.1 Creating a Tailoring file

You can create a new Tailoring file with SCAP Workbench

4.5.2 Uploading a Tailoring file

Access Tailoring files - Hosts -> Compliance -> Tailoring files

Create Tailoring - Upload your Tailoring file xml

4.5.3 Assigning a Tailoring file to a Policy

Go to Hosts -> Compliance -> Policies

Select a Policy to edit

Go to ‘SCAP Content’ tab

Select a Tailoring file from a dropdown and then a profile that comes with it Tailoring a Policy

4.5.4 Running a scan from UI ( foreman_openscap >= 0.6.5 )

In version 0.6.5 and higher, you can initiate scans from UI. Simply go to hosts page and select “Run OpenSCAP scan” from the dropdown menu. This will initiate a scan for all policies that are assigned to the host. foreman_remote_execution plugin of version 1.3.0 or higher needs to be installed for this feature to be enabled.

Run scan

5. Advanced topics

5.1 Distributing SCAP content with Foreman & Proxy

  • Exposes a url on Foreman for downloading the scap file for the policy (/api/compliance/policies/\<policy_id\>/content)
  • OpenSCAP plugin on Proxy serves as a (dumb) proxy to the above url (meaning, calling something like: https://\<proxy_url\>/compliance/policies/\<policy_id\>/content/\<digest\> will fetch the xml from https://\<foreman_url\>/api/compliance/policies/\<policy_id\>/content)
  • When foreman_scap_client starts running, it checks if the file configured by puppet exists. If it exists, it will resume operation. If it doesn’t exist, it will download the file from the Proxy and resume its operation.

Distribute SCAP Content

5.2 Validating SCAP content on the proxy

  • When uploading an SCAP content to Foreman it sends the file for validation at the Smart-Proxy:
    • The Smart-Proxy validates that the SCAP xml file is a valid OpenSCAP file, and returns the errors if not.
    • Once the SCAP content is validated, the Smart-Proxy is extracting the SCAP profiles for later use when creating a policy.

5.3 Arf Report retrieval process

  • The client host is running oscap test and uploads ARF report to the Smart-Proxy as an XML file.
  • The Smart-Proxy parses the XML and generates a JSON report.
  • Once the JSON report has been successfully posted to the Foreman, the XML file is saved on the Smart-Proxy’s filesystem for later use from the Foreman
  • (If the post to the Foreman fails the file is saved for later retry)
  • On the Foreman side:
    • The ARF report receives the JSON formatter report from the proxy and generates the report, its logs and messages.
    • The complete report can be downloaded from the Smart-Proxy as a compressed XML, or viewed in OpenSCAP style HTML.

Upload ARF Reports

6. Help

Please follow our standard procedures and contacts.

7. Getting involved

7.1 Troubleshooting

If you find a bug, please file it in Redmine.

See the troubleshooting section in the Foreman manual for more info.

7.2 Contributing

Follow the same process as Foreman for contributing.

8. Links

CFP for Config Management Camp is open until December 3rd. Submit your talks today!

Foreman 1.23.1 has been released! Follow the quick start to install it.

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