Institutional Repository [SANDBOX]
Technical University of Crete
EN  |  EL

Search

Browse

My Space

Preventing dynamic library compromise on Node.js via RWX-based privilege reduction

Vasilakis Nikos, Staicu Cristian-Alexandru, Ntousakis Grigorios, Kallas Konstantinos, Karel Ben, DeHon André, Pradel Michael

Full record


URI: http://purl.tuc.gr/dl/dias/0B314531-0264-4753-B88F-A6E867D9CED7
Year 2021
Type of Item Conference Full Paper
License
Details
Bibliographic Citation N. Vasilakis, C.-A. Staicu, G. Ntousakis, K. Kallas, B. Karel, A. DeHon, and M. Pradel, “Preventing dynamic library compromise on Node.js via RWX-based privilege reduction,” in Proceedings of the 2021 ACM SIGSAC Conference on Computer and Communications Security (CCS 2021), Virtual event, 2021, pp. 1821–1838, doi: 10.1145/3460120.3484535. https://doi.org/10.1145/3460120.3484535
Appears in Collections

Summary

Third-party libraries ease the development of large-scale software systems. However, libraries often execute with significantly more privilege than needed to complete their task. Such additional privilege is sometimes exploited at runtime via inputs passed to a library, even when the library itself is not actively malicious. We present Mir, a system addressing dynamic compromise by introducing a fine-grained read-write-execute (RWX) permission model at the boundaries of libraries: every field of every free variable name in the context of an imported library is governed by a permission set. To help specify the permissions given to existing code, Mir's automated inference generates default permissions by analyzing how libraries are used by their clients. Applied to over 1,000 JavaScript libraries for Node.js, Mir shows practical security (61/63 attacks mitigated), performance (2.1s for static analysis and +1.93% for dynamic enforcement), and compatibility (99.09%) characteristics---and enables a novel quantification of privilege reduction.

Available Files

Services

Statistics