CVE-2020-5953

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 03-02-2022 02:15

Last modified: - 12-04-2022 08:17

Total changes: - 4

Description

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).

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

High

Attack complexity

Local

Attack vector

High

Availability

High

Confidentiality

High

Integrity

High

Privileges required

Changed

Scope

None

User interaction

7.5

Base score

0.8

6.0

Exploitability score

Impact score

Verification logic

vendor=insyde AND product=insydeh2o AND version=5.12.09.0074

vendor=insyde AND product=insydeh2o AND version=5.23.04.0045

vendor=insyde AND product=insydeh2o AND version=5.23.45.0023

vendor=insyde AND product=insydeh2o AND version=5.33.15.0034

vendor=insyde AND product=insydeh2o AND version=5.34.03.0029

vendor=insyde AND product=insydeh2o AND version=5.42.03.0010

AND

vendor=siemens AND product=ruggedcom_ape1808_firmware AND version=-

vendor=siemens AND product=ruggedcom_ape1808 AND version=-

AND

vendor=siemens AND product=simatic_field_pg_m6_firmware AND version=-

vendor=siemens AND product=simatic_field_pg_m6 AND version=-

AND

vendor=siemens AND product=simatic_ipc127e_firmware AND version=-

vendor=siemens AND product=simatic_ipc127e AND version=-

AND

vendor=siemens AND product=simatic_ipc227g_firmware AND version=-

vendor=siemens AND product=simatic_ipc227g AND version=-

AND

vendor=siemens AND product=simatic_ipc277g_firmware AND version=-

vendor=siemens AND product=simatic_ipc277g AND version=-

AND

vendor=siemens AND product=simatic_itp1000_firmware AND version=-

vendor=siemens AND product=simatic_itp1000 AND version=-

AND

vendor=siemens AND product=simatic_ipc477e_pro_firmware AND version=-

vendor=siemens AND product=simatic_ipc477e_pro AND version=-

AND

vendor=siemens AND product=simatic_ipc627e_firmware AND version=-

vendor=siemens AND product=simatic_ipc627e AND version=-

AND

vendor=siemens AND product=simatic_ipc647e_firmware AND version=-

vendor=siemens AND product=simatic_ipc647e AND version=-

AND

vendor=siemens AND product=simatic_ipc677e_firmware AND version=-

vendor=siemens AND product=simatic_ipc677e AND version=-

AND

vendor=siemens AND product=simatic_ipc847e_firmware AND version=-

vendor=siemens AND product=simatic_ipc847e AND version=-

AND

vendor=siemens AND product=simatic_ipc327g_firmware AND version=-

vendor=siemens AND product=simatic_ipc327g AND version=-

AND

vendor=siemens AND product=simatic_ipc377g_firmware AND version=-

vendor=siemens AND product=simatic_ipc377g AND version=-

AND

vendor=siemens AND product=simatic_ipc427e_firmware AND version=-

vendor=siemens AND product=simatic_ipc427e AND version=-

AND

vendor=siemens AND product=simatic_ipc477e_firmware AND version=-

vendor=siemens AND product=simatic_ipc477e AND version=-

AND

vendor=siemens AND product=simatic_field_pg_m5_firmware AND version=-

vendor=siemens AND product=simatic_field_pg_m5 AND version=-

Reference

Keywords

CVE-2020-5953

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2020-5953

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures