Vulnerability Monitor

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CVE-2021-42554

An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Published

2022-02-03T02:15:07.380

Last Modified

2024-11-21T06:27:47.840

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.2 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application insyde insydeh2o < 5.08.42 Yes
Application insyde insydeh2o < 5.16.42 Yes
Application insyde insydeh2o < 5.26.42 Yes
Application insyde insydeh2o < 5.35.42 Yes
Application insyde insydeh2o < 5.42.51 Yes
Application insyde insydeh2o < 5.50.51 Yes
Operating System siemens simatic_field_pg_m5_firmware * Yes
Hardware siemens simatic_field_pg_m5 - No
Operating System siemens simatic_field_pg_m6_firmware * Yes
Hardware siemens simatic_field_pg_m6 - No
Operating System siemens simatic_ipc127e_firmware * Yes
Hardware siemens simatic_ipc127e - No
Operating System siemens simatic_ipc227g_firmware * Yes
Hardware siemens simatic_ipc227g - No
Operating System siemens simatic_ipc277g_firmware * Yes
Hardware siemens simatic_ipc277g - No
Operating System siemens simatic_ipc327g_firmware * Yes
Hardware siemens simatic_ipc327g - No
Operating System siemens simatic_ipc377g_firmware * Yes
Hardware siemens simatic_ipc377g - No
Operating System siemens simatic_ipc427e_firmware * Yes
Hardware siemens simatic_ipc427e - No
Operating System siemens simatic_ipc477e_firmware * Yes
Hardware siemens simatic_ipc477e - No
Operating System siemens simatic_ipc627e_firmware * Yes
Hardware siemens simatic_ipc627e - No
Operating System siemens simatic_ipc647e_firmware * Yes
Hardware siemens simatic_ipc647e - No
Operating System siemens simatic_ipc677e_firmware * Yes
Hardware siemens simatic_ipc677e - No
Operating System siemens simatic_ipc847e_firmware * Yes
Hardware siemens simatic_ipc847e - No
Operating System siemens simatic_itp1000_firmware * Yes
Hardware siemens simatic_itp1000 - No
Operating System siemens ruggedcom_ape1808_firmware * Yes
Hardware siemens ruggedcom_ape1808 - No
References