CVE:CVE-2021-33627
CNNVD:CNNVD-202202-115
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）。
InsydeH2O Hardware-2-Operating System (H2O) UEFI固件存在缓冲区错误漏洞，该漏洞源于 SWSMI 处理程序没有充分检查或验证分配的缓冲区指针 (CommBuffer)。攻击者可以利用它来破坏 SMRAM 内存中的数据，甚至导致任意代码执行。
solution:Upgrade insyde insydeh2o to a higher version than 5.08.29,5.16.29,5.26.29,5.35.29,and avoid the version [5.0,5.08.29),[5.1,5.16.29),[5.2,5.26.29),[5.3,5.35.29); Upgrade siemens simatic_field_pg_m5_firmware to a higher version than *; Upgrade siemens simatic_field_pg_m6_firmware to a higher version than *; Upgrade siemens simatic_ipc127e_firmware to a higher version than *; Upgrade siemens simatic_ipc227g_firmware to a higher version than *; Upgrade siemens simatic_ipc277g_firmware to a higher version than *; Upgrade siemens simatic_ipc327g_firmware to a higher version than *; Upgrade siemens simatic_ipc377g_firmware to a higher version than *; Upgrade siemens simatic_ipc427e_firmware to a higher version than *; Upgrade siemens simatic_ipc477e_firmware to a higher version than *; Upgrade siemens simatic_ipc627e_firmware to a higher version than *; Upgrade siemens simatic_ipc647e_firmware to a higher version than *; Upgrade siemens simatic_ipc677e_firmware to a higher version than *; Upgrade siemens simatic_ipc847e_firmware to a higher version than *; Upgrade siemens simatic_itp1000_firmware to a higher version than *