11-year-old Microsoft-signed UEFI shim bootloaders, some dating back over a decade, let attackers completely bypass UEFI Secure Boot on nearly any UEFI-based machine, regardless of the installed operating system. ESET researchers uncovered that the vulnerable shims, all at version 0.9 or earlier, were signed by Microsoft’s “Microsoft Corporation UEFI CA 2011” certificate and remained trusted for […]
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