Title
FreeGuard: A Faster Secure Heap Allocator
Contributing USMA Research Unit(s)
Electrical Engineering and Computer Science
Document Type
Conference Proceeding
Publication Date
Fall 10-30-2017
Abstract
In spite of years of improvements to software security, heap-related attacks still remain a severe threat. One reason is that many existing memory allocators fall short in a variety of aspects. For instance, performance-oriented allocators are designed with very limited countermeasures against attacks, but secure allocators generally suffer from significant performance overhead, e.g., running up to 10× slower. This paper, therefore, introduces FreeGuard, a secure memory allocator that prevents or reduces a wide range of heap-related attacks, such as heap overflows, heap over-reads, use-after-frees, as well as double and invalid frees. FreeGuard has similar performance to the default Linux allocator, with less than 2% overhead on average, but provides significant improvement to security guarantees. FreeGuard also addresses multiple implementation issues of existing secure allocators, such as the issue of scalability. Experimental results demonstrate that FreeGuard is very effective in defending against a variety of heap-related attacks.
Recommended Citation
Silvestro, S., Liu, H., Crosser, C., Lin, Z., and Liu, T. (2017). FreeGuard: A Faster secure heap allocator. Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security. Dallas, TX: ACM. DOI: 10.1145/3133956.3133957
First Page
2389
Record links to items hosted by external providers may require fee for full-text.