This is an OASIS TC Open Repository. See the Governance section for more information.

The STIX 2 Pattern Validator is a software tool for checking the syntax of the Cyber Threat Intelligence (CTI) STIX Pattern expressions, which are used within STIX to express conditions (prepresented with the Cyber Observable data model) that indicate particular cyber threat activity. The repository contains source code, an ANTLR grammar, automated tests and associated documentation for the tool. The validator can be used as a command-line tool or as a Python library which can be included in other applications.

1. Install with pip:

   $ pip install stix2-patterns

2. Validate a pattern from the command line:

   $ validate-patterns
   Enter a pattern to validate: [file-object:hashes.md5 = '79054025255fb1a26e4bc422aef54eb4']
   PASS: [file-object:hashes.md5 = '79054025255fb1a26e4bc422aef54eb4']

3. Validate a pattern from Python code:

   from stix2patterns.validator import run_validator
   
   pattern = "[file-object:hashes.md5 = '79054025255fb1a26e4bc422aef54eb4']"
   errors = run_validator(pattern)

For more information, see the stix2-patterns documentation

This GitHub public repository (https://github.com/oasis-open/cti-pattern-validator ) was proposed and approved [bis] by the OASIS Cyber Threat Intelligence (CTI) TC as an OASIS TC Open Repository to support development of open source resources related to Technical Committee work.

While this TC Open Repository remains associated with the sponsor TC, its development priorities, leadership, intellectual property terms, participation rules, and other matters of governance are separate and distinct from the OASIS TC Process and related policies.

All contributions made to this TC Open Repository are subject to open source license terms expressed in the BSD-3-Clause License. That license was selected as the declared "Applicable License" when the TC Open Repository was created.

As documented in "Public Participation Invited", contributions to this OASIS TC Open Repository are invited from all parties, whether affiliated with OASIS or not. Participants must have a GitHub account, but no fees or OASIS membership obligations are required. Participation is expected to be consistent with the OASIS TC Open Repository Guidelines and Procedures, the open source LICENSE designated for this particular repository, and the requirement for an Individual Contributor License Agreement that governs intellectual property.

TC Open Repository Maintainers are responsible for oversight of this project's community development activities, including evaluation of GitHub pull requests and preserving open source principles of openness and fairness. Maintainers are recognized and trusted experts who serve to implement community goals and consensus design preferences.

Initially, the associated TC members have designated one or more persons to serve as Maintainer(s); subsequently, participating community members may select additional or substitute Maintainers, per consensus agreements.

• Jason Keirstead; GitHub ID: https://github.com/JasonKeirstead; WWW: IBM
• Emily Ratliff; GitHub ID: https://github.com/ejratl; WWW: IBM
• Duncan Sparrell; GitHub ID: https://github.com/sparrell; WWW: sFractal

• TC Open Repositories: Overview and Resources
• Frequently Asked Questions
• Open Source Licenses
• Contributor License Agreements (CLAs)
• Maintainers' Guidelines and Agreement

Questions or comments about this TC Open Repository's activities should be composed as GitHub issues or comments. If use of an issue/comment is not possible or appropriate, questions may be directed by email to the Maintainer(s) listed above. Please send general questions about TC Open Repository participation to OASIS Staff at [email protected] and any specific CLA-related questions to [email protected].