Neural Transfer Learning for Repairing Security Vulnerabilities in C Code

• URL: http://arxiv.org/abs/2104.08308v1
• Date: Fri, 16 Apr 2021 18:32:51 GMT
• Title: Neural Transfer Learning for Repairing Security Vulnerabilities in C Code
• Authors: Zimin Chen, Steve Kommrusch and Martin Monperrus
• Abstract summary: We propose an approach for repairing security vulnerabilities named VRepair which is based on transfer learning. VRepair is first trained on a large bug fix corpus, and is then tuned on a vulnerability fix dataset, which is an order of magnitudes smaller. In our experiments, we show that a model trained only on a bug fix corpus can already fix some vulnerabilities.
• Score: 14.664825927959644
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we address the problem of automatic repair of software vulnerabilities with deep learning. The major problem with data-driven vulnerability repair is that the few existing datasets of known confirmed vulnerabilities consist of only a few thousand examples. However, training a deep learning model often requires hundreds of thousands of examples. In this work, we leverage the intuition that the bug fixing task and the vulnerability fixing task are related, and the knowledge learned from bug fixes can be transferred to fixing vulnerabilities. In the machine learning community, this technique is called transfer learning. In this paper, we propose an approach for repairing security vulnerabilities named VRepair which is based on transfer learning. VRepair is first trained on a large bug fix corpus, and is then tuned on a vulnerability fix dataset, which is an order of magnitudes smaller. In our experiments, we show that a model trained only on a bug fix corpus can already fix some vulnerabilities. Then, we demonstrate that transfer learning improves the ability to repair vulnerable C functions. In the end, we present evidence that transfer learning produces more stable and superior neural models for vulnerability repair.

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