OWASP OSS Risk 1: Known Vulnerabilities

The article is part of a ten-part series by Station 9 at Endor Labs, focused on the top risks associated with Open Source Software (OSS) dependencies, specifically OSS-RISK-1: Known Vulnerabilities. It discusses how known vulnerabilities are publicized security flaws that can exist in both open source and private software packages, often disclosed through the Common Vulnerabilities and Exposures (CVE) program. The article highlights the importance of promptly patching dependencies once a fix is released to prevent potential breaches, as demonstrated by the Equifax incident where failure to update Apache Struts led to a massive data breach. The article also explores methods for assessing vulnerability exposure, including Common Vulnerability Scoring System (CVSS), Exploit Prediction Scoring System (EPSS), and Reachability Analysis, emphasizing the importance of using reliable data sources such as NVD, GitHub Advisories, and OSV. Furthermore, it discusses the importance of prioritizing remediation efforts based on factors like reachability, fix availability, and exploitation probability, using a case study with Endor Labs to illustrate the effectiveness of these strategies in reducing security debt and improving vulnerability management.

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