Vulnerability Monitor

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CVE-2020-5953

A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).

Published

2022-02-03T01:15:07.647

Last Modified

2024-11-21T05:34:53.567

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

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

3.4

Impact Score

10.0

Weaknesses
  • Type: Primary
    NVD-CWE-noinfo
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application insyde insydeh2o 5.12.09.0074 Yes
Application insyde insydeh2o 5.23.04.0045 Yes
Application insyde insydeh2o 5.23.45.0023 Yes
Application insyde insydeh2o 5.33.15.0034 Yes
Application insyde insydeh2o 5.34.03.0029 Yes
Application insyde insydeh2o 5.42.03.0010 Yes
Operating System siemens ruggedcom_ape1808_firmware - Yes
Hardware siemens ruggedcom_ape1808 - 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_itp1000_firmware - Yes
Hardware siemens simatic_itp1000 - No
Operating System siemens simatic_ipc477e_pro_firmware - Yes
Hardware siemens simatic_ipc477e_pro - 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_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_field_pg_m5_firmware - Yes
Hardware siemens simatic_field_pg_m5 - No
References