Taking Kernel Hardening to the Next Level
Автор: Black Hat
Загружено: 2022-09-23
Просмотров: 2414
Описание:
Memory safety issues are the foremost security problems in today's operating systems (OS). In 2021 alone, there were 175 CVEs assigned to potentially exploitable bugs in Linux. Since OS is an attractive target to adversaries who wish to elevate privileges, exploitation techniques targeting such bugs have been evolving and getting more sophisticated.
Accordingly, security researchers have proposed several kernel hardening techniques that check a set of rules that OS has to respect. In this talk, we choose two hardening techniques, CFI (Control-Flow Integrity) and UAF (Use-After-Free) defense, and detail why state-of-the-art techniques are not enough to stop adversaries and propose new techniques to take them to the next level.
By: Jinbum Park, Haehyun Cho, Seolheui Kim, Yeji Kim, Bumhan Kim, Taesoo Kim & Sungbae Yoo
Full Abstract & Presentation Materials: https://www.blackhat.com/asia-22/brie...
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