An issue was discovered in SystemFirmwareManagementRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The implementation of the GetImage method retrieves the value of a runtime variable named GetImageProgress, and later uses this value as a function pointer. This variable is wiped out by the same module near the end of the function. By setting this UEFI variable from the OS to point into custom code, an attacker could achieve arbitrary code execution in the DXE phase, before several chipset locks are set.
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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2023-09-18T00:00:00

Updated: 2023-09-18T12:02:46.744601

Reserved: 2023-05-30T00:00:00


Link: CVE-2023-34195

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2023-09-18T13:15:08.487

Modified: 2023-09-21T17:22:14.967


Link: CVE-2023-34195

JSON object: View

cve-icon Redhat Information

No data.