LightDE: A Lightweight Method for Eliminating Dangling Pointers ...

• Main Author: An, Xun
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: arXiv 2024
• Subjects: Cryptography and Security cs.CR; FOS: Computer and information sciences; The Pointers
• Online Access: https://dx.doi.org/10.48550/arxiv.2405.20697; https://arxiv.org/abs/2405.20697

The widespread presence of Use-After-Free (UAF) vulnerabilities poses a serious threat to software security, with dangling pointers being considered the primary cause of these vulnerabilities. However, existing methods for defending against UAF vulnerabilities by eliminating dangling pointers need to interrupt the program's execution when encountering pointer assignment operations in order to store the memory addresses of the pointers in a specific data structure. This makes these methods not lightweight. To overcome this drawback, we propose a novel approach called LightDE. This method does not require storing the memory addresses of pointers during program execution. LightDE uses our proposed structure-sensitive pointer analysis method to determine which objects pointers point to and stores the pointing relationships in the program's data segment during program compilation. Since LightDE only needs to verify if pointers identified by the pointer analysis point to released objects when eliminating dangling ...