SmmExploit

SmmExploit Dies ist ein Bericht und ein Exploit für CVE-2021-26943, die Kernel-zu-SMM lokale Privilegienausweitung Schwachstelle im ASUS UX360CA BIOS Version 303. Das Problem wurde in der Version 304 behoben. Issue Description Zusammenfassung Das UX360CA BIOS Version 303 enthält 3 anfällige Modul...

Multiple race conditions due to TOCTOU flaws in various UEFI Implementations

Overview Multiple Unified Extensible Firmware Interface UEFI implementations are vulnerable to code execution in System Management Mode SMM by an attacker who gains administrative privileges on the local machine. An attacker can corrupt the memory using Direct Memory Access DMA timing attacks tha...

System Management Mode deep dive: How SMM isolation hardens the platform

Ensuring that the platform firmware is healthy and trustworthy is fundamental to guaranteeing that powerful platform security features like Hypervisor-protected code integrity HVCI and Windows Defender Credential Guard are functioning as expected. Windows 10 achieves this by leveraging a...