Secure Encrypted Virtualization

Pierluigi Paganini May 16, 2021
Two flaws could allow bypassing AMD SEV protection system

The chipmaker AMD published guidance for two new attacks against its SEV (Secure Encrypted Virtualization) protection technology. Chipmaker AMD has issued guidance for two attacks (CVE-2020-12967, CVE-2021-26311) that allow bypassing the SEV (Secure Encrypted Virtualization) technology implemented to prevent rogue operating systems on virtual machines. The chipmaker is aware of two research papers, respectively titled […]

Pierluigi Paganini May 26, 2018
Experts show how to defeat AMD’s Secure Encrypted Virtualization

German researchers devised a method, dubbed SEVered, to defeat the security mechanisms Secure Encrypted Virtualization implemented by the AMD Epyc server microchips to automatically encrypt virtual machines in memory. The attack could allow them to exfiltrate data in plaintext from an encrypted guest via a hijacked hypervisor and simple HTTP requests to a web server running […]