Skip to Main content Skip to Navigation
Journal articles

Secure the Clones

Thomas Jensen 1 Florent Kirchner 1 David Pichardie 1
1 CELTIQUE - Software certification with semantic analysis
Inria Rennes – Bretagne Atlantique , IRISA-D4 - LANGAGE ET GÉNIE LOGICIEL
Abstract : Exchanging mutable data objects with untrusted code is a delicate matter because of the risk of creating a data space that is accessible by an attacker. Consequently, secure programming guidelines for Java stress the importance of using defensive copying before accepting or handing out references to an internal mutable object. However, implementation of a copy method (like clone()) is entirely left to the programmer. It may not provide a sufficiently deep copy of an object and is subject to overriding by a malicious sub-class. Currently no language-based mechanism supports secure object cloning. This paper proposes a type-based annotation system for defining modular copy policies for class-based object-oriented programs. A copy policy specifies the maximally allowed sharing between an object and its clone. We present a static enforcement mechanism that will guarantee that all classes fulfil their copy policy, even in the presence of overriding of copy methods, and establish the semantic correctness of the overall approach in Coq. The mechanism has been implemented and experimentally evaluated on clone methods from several Java libraries.
Document type :
Journal articles
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal.inria.fr/hal-00762377
Contributor : Thomas Jensen <>
Submitted on : Friday, December 7, 2012 - 9:59:44 AM
Last modification on : Friday, July 10, 2020 - 4:19:38 PM
Long-term archiving on: : Saturday, December 17, 2016 - 10:05:27 PM

File

final.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-00762377, version 1

Citation

Thomas Jensen, Florent Kirchner, David Pichardie. Secure the Clones. Logical Methods in Computer Science, Logical Methods in Computer Science Association, 2012, 8 (2). ⟨hal-00762377⟩

Share

Metrics

Record views

2751

Files downloads

153