Описание
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)
Ссылки
- ExploitThird Party Advisory
- Vendor Advisory
- Vendor Advisory
- ExploitThird Party Advisory
- Vendor Advisory
- Vendor Advisory
Уязвимые конфигурации
EPSS
8.2 High
CVSS3
Дефекты
Связанные уязвимости
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)
EPSS
8.2 High
CVSS3