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).
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-02-03T01:00:57

Updated: 2024-08-04T08:47:41.026Z

Reserved: 2020-01-06T00:00:00

Link: CVE-2020-5953

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-02-03T01:15:07.647

Modified: 2022-04-12T18:17:18.710

Link: CVE-2020-5953

cve-icon Redhat

No data.