[SW Security] CRCount: Pointer Invalidation with Reference Counting to Mitigate Use-after-free in Legacy C/C++, Network and Distributed System Security Symposium (NDSS), Feb. 2019

CRCount: Pointer Invalidation with Reference Counting to Mitigate Use-after-free in Legacy C/C++, Network and Distributed System Security Symposium (NDSS) 2019


Jangseop Shin, Donghyun Kwon, Jiwon Seo, Yeongpil Cho, Yunheung Paek


본 논문은 C/C++ 프로그램에 대한 공격으로 많이 사용되는 Use-after-free 취약점에 대한 방어 기법을 제안한다. 이를 위해 컴파일 단계에서 코드를 수정하여 Heap object에 대한 Reference Counting을 수행하여 이를 통해 Heap object의 해제를 dangling pointer가 없어질 때까지 지연시킨다. 또한 실험을 통해 이 approach의 효율성을 보여주었다.

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