CVEvulnerability

CVE-2021-33627

8.2 HIGH Published 2022-02-03 Modified 2026-08-11 Official page ↗
Status
Modified
Published
2022-02-03
Last modified
2026-08-11
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.2 HIGH — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-119

Description

An issue was discovered in Insyde InsydeH2O Kernel 5.0 before 05.09.11, 5.1 before 05.17.11, 5.2 before 05.27.11, 5.3 before 05.36.11, 5.4 before 05.44.11, and 5.5 before 05.52.11 affecting FwBlockServiceSmm. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.

Affected configurations

• insyde insydeh2o (>= 5.0 < 5.08.29) • insyde insydeh2o (>= 5.1 < 5.16.29) • insyde insydeh2o (>= 5.2 < 5.26.29) • insyde insydeh2o (>= 5.3 < 5.35.29) • siemens simatic field pg m5 firmware • siemens simatic field pg m6 firmware • siemens simatic ipc127e firmware • siemens simatic ipc227g firmware • siemens simatic ipc277g firmware • siemens simatic ipc327g firmware • siemens simatic ipc377g firmware • siemens simatic ipc427e firmware • siemens simatic ipc477e firmware • siemens simatic ipc627e firmware • siemens simatic ipc647e firmware • siemens simatic ipc677e firmware • siemens simatic ipc847e firmware • siemens simatic itp1000 firmware

Related

Weakness · CWE (1)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness

References