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 Information

Status: PUBLISHED

Assigner: mitre

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

Updated: 2022-02-23T15:06:21

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


Link: CVE-2020-5953

JSON object: View

cve-icon NVD Information

Status : Analyzed

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

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


Link: CVE-2020-5953

JSON object: View

cve-icon Redhat Information

No data.