CVE-2023-39284

CVE-2023-39284 affects Insyde InsydeH2O kernel 5.0–5.5 via IhisiServicesSmm, where arbitrary SetVariable calls in the SMI handler can pass attacker-controlled parameters. Root cause: unsanitized arguments in SMI SetVariable handling, enabling modification of protected NVRAM variables from Ring0 (...

CVE-2023-39284

An issue was discovered in IhisiServicesSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There are arbitrary calls to SetVariable with unsanitized arguments in the SMI handler...

PT-2023-26866 · Insyde · Insydeh2O

Name of the Vulnerable Software and Affected Versions: Insyde InsydeH2O versions 5.0 through 5.5 Description: An issue was discovered in IhisiServicesSmm where there are arbitrary calls to SetVariable with unsanitized arguments in the SMI handler. This allows for the modification of protected NVR...

EfiGuard - Disable PatchGuard And DSE At Boot Time

EfiGuard is a portable x64 UEFI bootkit that patches the Windows boot manager, boot loader and kernel at boot time in order to disable PatchGuard and Driver Signature Enforcement DSE. Features Currently supports all EFI-compatible versions of Windows x64 ever released, from Vista SP1 to Server...