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.
References
Link | Resource |
---|---|
https://www.insyde.com/security-pledge | Vendor Advisory |
https://www.insyde.com/security-pledge/SA-2023052 | Vendor Advisory |
History
No history.
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
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
Redhat Information
No data.
CWE