RAZOR: A Framework for Post-deployment Software Debloating


Chenxiong Qian, Hong Hu, Mansour Alharthi, Pak Ho Chung, Taesoo Kim, and Wenke Lee, Georgia Institute of Technology


Commodity software typically includes functionalities for a broad user population. However, each individual user usually only needs a subset of the supported functionalities. The bloated code not only hinders optimal execution, but also leads to a larger attack surface. Recent work explores program debloating as an emerging solution to this problem. Unfortunately, existing works require program source code, limiting their deployability.

In this paper, we propose a practical debloating framework, RAZOR, that performs code reduction for deployed binaries. Based on users’ specification, our tool customizes the binary to generate a functional program with the minimal code size. Instead of only supporting given test cases, RAZOR takes several control-flow heuristics to infer complementary code that are necessary to support user-expected functionalities. We have evaluated RAZOR on commonly used benchmarks and real-world applications, including the web browser FireFox and the close-sourced PDF reader FoxitReader. The result shows that RAZOR is able to reduce over 70% of the code from the bloated binary. It produces functional programs and does not introduce new security issues. RAZOR is thus a practical framework for debloating real-world programs.

USENIX Security '19 Open Access Videos Sponsored by
King Abdullah University of Science and Technology (KAUST)

Open Access Media

USENIX is committed to Open Access to the research presented at our events. Papers and proceedings are freely available to everyone once the event begins. Any video, audio, and/or slides that are posted after the event are also free and open to everyone. Support USENIX and our commitment to Open Access.

@inproceedings {236296,
author = {Chenxiong Qian and Hong Hu and Mansour Alharthi and Pak Ho Chung and Taesoo Kim and Wenke Lee},
title = {{RAZOR}: A Framework for Post-deployment Software Debloating},
booktitle = {28th USENIX Security Symposium (USENIX Security 19)},
year = {2019},
isbn = {978-1-939133-06-9},
address = {Santa Clara, CA},
pages = {1733--1750},
url = {https://www.usenix.org/conference/usenixsecurity19/presentation/qian},
publisher = {USENIX Association},
month = aug

Presentation Video