Razor: A framework for post-deployment software debloating

Chenxiong Qian, Hong Hu, Mansour Alharthi, Pak Ho Chung, Taesoo Kim, Wenke Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

76 Scopus citations


Commodity software typically includes a large number of functionalities for a broad user population. However, each individual user usually only needs a small subset of all supported functionalities. The bloated code not only hinders optimal execution, but also leads to a larger attack surface. Recent works have explored program debloating as an emerging solution to this problem. Unfortunately, these works require program source code, limiting their real-world deployability. In this paper, we propose a practical debloating framework, RAZOR, that performs code reduction for deployed binaries. Based on users' specifications, our tool customizes the binary to generate a functional program with minimal code size. Instead of only supporting given test cases, RAZOR takes several control-flow heuristics to infer complementary code that is necessary to support user-expected functionalities. We 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 any security issues. RAZOR is thus a practical framework for debloating real-world programs.

Original languageEnglish (US)
Title of host publicationProceedings of the 28th USENIX Security Symposium
PublisherUSENIX Association
Number of pages18
ISBN (Electronic)9781939133069
StatePublished - 2019
Event28th USENIX Security Symposium - Santa Clara, United States
Duration: Aug 14 2019Aug 16 2019

Publication series

NameProceedings of the 28th USENIX Security Symposium


Conference28th USENIX Security Symposium
Country/TerritoryUnited States
CitySanta Clara

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Information Systems
  • Safety, Risk, Reliability and Quality


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