A Security Perspective on Code Review: The Case of Chromium

Modern Code Review (MCR) is an established software development process that aims to improve software quality. Although evidence showed that higher levels of review coverage relates to less post-release bugs, it remains unknown the effectiveness of MCR at specifically finding security issues. We pre...

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Vydáno v:Proceedings / IEEE International Working Conference on Source Code Analysis and Manipulation s. 21 - 30
Hlavní autoři: di Biase, Marco, Bruntink, Magiel, Bacchelli, Alberto
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.10.2016
Témata:
Chromium
code review
Computer bugs
empirical software engineering
Inspection
Manuals
mining software repositories
modern code review
Security
security flaw
Software quality
software security
ISSN:2470-6892
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Shrnutí:Modern Code Review (MCR) is an established software development process that aims to improve software quality. Although evidence showed that higher levels of review coverage relates to less post-release bugs, it remains unknown the effectiveness of MCR at specifically finding security issues. We present a work we conduct aiming to fill that gap by exploring the MCR process in the Chromium open source project. We manually analyzed large sets of registered (114 cases) and missed (71 cases) security issues by backtracking in the project's issue, review, and code histories. This enabled us to qualify MCR in Chromium from the security perspective from several angles: Are security issues being discussed frequently? What categories of security issues are often missed or found? What characteristics of code reviews appear relevant to the discovery rate? Within the cases we analyzed, MCR in Chromium addresses security issues at a rate of 1% of reviewers' comments. Chromium code reviews mostly tend to miss language-specific issues (eg C++ issues and buffer overflows) and domain-specific ones (eg such as Cross-Site Scripting), when code reviews address issues, mostly they address those that pertain to the latter type. Initial evidence points to reviews conducted by more than 2 reviewers being more successful at finding security issues.
ISSN:2470-6892
DOI:10.1109/SCAM.2016.30