Open Vulnerability and Assessment Language

Open Vulnerability and Assessment Language
Name	Open Vulnerability and Assessment Language
Developer	OASIS
Released	2005
Programming language	XML
Platform	Cross-platform
License	Open standard

Open Vulnerability and Assessment Language is an open standard for representing assessment content, reporting, and configuration checks in a machine-readable format. It is designed to enable interoperability among security scanners, compliance frameworks, and patch management systems developed by organizations such as OASIS (organization), MITRE Corporation, National Institute of Standards and Technology, Cisco Systems. The specification uses a structured markup approach to encode tests, results, and remediation guidance compatible with tools from Qualys, Tenable, Inc., Rapid7, Red Hat, Microsoft.

Overview

OVAL defines a vocabulary and schemas that describe system characteristics, assessment procedures, and states, enabling vendors and agencies like Department of Homeland Security (United States), European Union Agency for Cybersecurity, United States Computer Emergency Readiness Team to exchange findings. It comprises elements for inventories, tests, objects, states, and definitions, permitting mapping between product checks and standards such as Common Vulnerabilities and Exposures, Common Platform Enumeration, Security Content Automation Protocol. OVAL content is encoded in XML and is intended to be consumed by scanners, configuration assessment tools, and reporting platforms used by entities including Amazon Web Services, Google Cloud Platform, IBM.

History and Development

The initiative originated from collaborative efforts among stakeholders including MITRE Corporation, National Institute of Standards and Technology, Department of Defense (United States), and private vendors like Symantec Corporation and McAfee. Early work parallels projects such as Security Content Automation Protocol and follows precedents set by standards bodies like Internet Engineering Task Force and consortiums like OASIS (organization). Over time, maintainers liaised with publishers such as Red Hat and distributors like SUSE to produce content feeds. Major milestones involved alignment with taxonomies like Common Vulnerabilities and Exposures and identifiers from Common Weakness Enumeration, and coordination with incident response teams including CERT Coordination Center.

Language Structure and Components

OVAL's schema vocabulary defines core elements: definitions that aggregate tests, objects, and states to express a condition; system characteristics for inventory; and results for assessment outcomes. The architecture resembles XML-based languages developed by groups including World Wide Web Consortium and follows schema practices seen in Extensible Markup Language. Key components reference enumerations and identifiers from Common Platform Enumeration and link remediation steps to publications like National Checklist Program content. Profiles and content repositories from vendors such as Red Hat and Microsoft provide real-world implementations of OVAL definitions, while translation tools often integrate with libraries influenced by Apache Software Foundation projects.

Implementations and Tooling

Numerous commercial and open-source tools implement the standard. Vendors like Qualys and Tenable, Inc. consume OVAL content for vulnerability scanning, while projects such as OpenSCAP and distributions like Fedora Project, Debian include OVAL-based checks for compliance and patch verification. Integration layers exist for orchestration platforms including Ansible (software), Puppet (software), and Chef (software), and for continuous integration systems like Jenkins (software). Management consoles from Splunk and Elastic (company) ingest OVAL-derived findings for analytics and correlation. Toolchains often utilize parsers and validators developed under open-source governance models like those of GitHub and GitLab.

Use Cases and Adoption

Organizations in sectors represented by Health and Human Services (United States), Bank of England, European Central Bank, and enterprises operated by Siemens and General Electric use OVAL content to automate configuration assessment, patch verification, and compliance reporting. Regulators and auditors reference OVAL-based evidence when aligning to standards such as Payment Card Industry Data Security Standard and frameworks maintained by International Organization for Standardization. OVAL feeds are published by vendors and community collections associated with distributions like Red Hat Enterprise Linux and Ubuntu (operating system), enabling system integrators and managed service providers like IBM Security to scale assessments.

Criticisms and Limitations

Critiques include XML verbosity paralleling debates around Extensible Markup Language versus more concise formats, and challenges mapping complex dynamic checks when compared to domain-specific languages preferred by some vendors. Adoption barriers cited by critics reference governance and update cadence, echoing concerns voiced in standards discussions at Internet Engineering Task Force meetings and within consortia such as OASIS (organization). There are interoperability wrinkles when aligning OVAL definitions with rapidly evolving identifiers from Common Vulnerabilities and Exposures or when integrating with container orchestration platforms like Kubernetes and cloud providers such as Amazon Web Services. Despite these, the standard remains a cornerstone for many national and corporate assessment programs run by agencies like United States Computer Emergency Readiness Team and corporations including Microsoft and Red Hat.

Category:Computer security standards