An Empirical Model to Predict Security Vulnerabilities using Code Complexity Metrics

Complexity is often hypothesized to be the enemy of software security. If this hypothesis is true, complexity metrics may be used to predict the locale of security problems and can be used to prioritize inspection and testing efforts. We performed statistical analysis on nine complexity metrics from the JavaScript Engine in the Mozilla application framework to find differences in code metrics between vulnerable and non-vulnerable code and to predict vulnerabilities. Our initial results show that complexity metrics can predict vulnerabilities at a low false positive rate, but at a high false negative rate.