Presented at
Black Hat USA 2013,
July 31, 2013, 3:30 p.m.
(60 minutes)
Academic researchers, journalists, security vendors, software vendors, and other enterprising... uh... enterprises often analyze vulnerability statistics using large repositories of vulnerability data, such as CVE, OSVDB, and others. These stats are claimed to demonstrate trends in disclosure, such as the number or type of vulnerabilities, or their relative severity. Worse, they are often (mis)used to compare competing products to assess which one offers the best security.
Most of these statistical analyses are faulty or just pure hogwash. They use the easily-available, but drastically misunderstood data to craft irrelevant questions based on wild assumptions, while never figuring out (or even asking us about) the limitations of the data. This leads to a wide variety of bias that typically goes unchallenged, that ultimately forms statistics that make headlines and, far worse, are used for budget and spending.
As maintainers of two well-known vulnerability information repositories, we're sick of hearing about sloppy research after it's been released, and we're not going to take it any more.
We will give concrete examples of the misuses and abuses of vulnerability statistics over the years, revealing which studies do it right (rather, the least wrong), and how to judge future claims so that you can make better decisions based on these "studies." We will cover all the kinds of documented and undocumented bias that can exist in a vulnerability data source; how variations in counting hurt comparative analyses; and all the ways that vulnerability information is observed, cataloged, and annotated.
Steve will provide vendor-neutral, friendly, supportive suggestions to the industry. Jericho will do no such thing.
Presenters:
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Steve Christey
- MITRE
Steve Christey is a Principal Information Security Engineer in the Security and Information Operations Division at The MITRE Corporation. He is the editor of the Common Vulnerabilities and Exposures (CVE) list, Chair of the CVE Editorial Board, and technical lead for the Common Weakness Enumeration (CWE), CWSS, and the CWE/SANS Top 25 Software Most Dangerous Software Errors. He has been an active contributor to other efforts including NIST's Static Analysis Tool Exposition (SATE), the Common Vulnerability Scoring System (CVSS), the SANS Secure Programming exams, and a co-author of the influential "Responsible Vulnerability Disclosure Process" IETF draft with Chris Wysopal in 2002. His current interests include secure software development and testing, consumer-friendly software security metrics, the theoretical underpinnings of vulnerabilities, and vulnerability research. He holds a B.S. in Computer Science from Hobart College.
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Brian Martin
- Open Security Foundation
Brian Martin (Jericho) has been studying, collecting, and cataloging vulnerabilities for 15 years, personally and professionally. Starting with a personal collection organized in the FILES.BBS format and ultimately becoming the Content Manager of the Open Source Vulnerability Database (OSVDB), he has pushed for the evolution of VDBs for years. Brian has been involved in all aspects of the vulnerability disclosure process, including finding new vulnerabilities, writing advisories, coordinating disclosure, and working with a variety of organizations to improve vulnerability handling and response. Additionally, Brian is on the CVE Editorial Board and remains a champion of small misunderstood creatures.
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