Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
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.)
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Insyde InsydeH2O 安全漏洞
Vulnerability Description
Insyde InsydeH2O是中国台湾系微（Insyde）公司的一个 C 语言源，它实现了新技术“EFI/UEFI”规范，旨在取代传统的 BIOS（基本输入/输出系统）。 Insyde InsydeH2O 5.0至5.5版本存在安全漏洞，该漏洞源于UsbLegacyControlSmm中的SMM驱动存在问题，可能导致在SMM中执行任意代码并提升权限。攻击者可以在USB SMI处理程序触发之前覆盖EFI_BOOT_SERVICES表中的函数指针。
CVSS Information
N/A
Vulnerability Type
N/A