Annual Computer Security Applications Conference (ACSAC) 2020

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Measurements of the Most Significant Software Security Weaknesses

In this work, we provide a metric to calculate the most significant software security weaknesses as defined by an aggregate metric of the frequency, exploitability, and impact of related vulnerabilities. The Common Weakness Enumeration (CWE) is a well-known and used list of software security weaknesses. The CWE community publishes such an aggregate metric to calculate the `Most Dangerous Software Errors'. However, we find that the published equation highly biases frequency and almost ignores exploitability and impact in generating top lists of varying sizes. This is due to the differences in the distributions of the component metric values. To mitigate this, we linearize the frequency distribution using a double log function. We then propose a variety of other improvements, provide top lists of the most significant CWEs for 2019, and provide an analysis of the identified software security weaknesses.

Carlos Cardoso Galhardo
National Institute of Standards and Technology; INMETRO

Peter Mell
National Institute of Standards and Technology

Irena Bojanova
National Institute of Standards and Technology

Assane Gueye
UADB-Senegal & Prometheus Computing

Paper (ACM DL)




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