Insyde Security Advisory 2023035

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2023035 Software CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L 6.4 05/05/2023 05/05/2023

Summary:

Insufficient TSEG Overlap Checks.

Vulnerability Details

CVE-2023-27373

Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.

Intel Mobile Platforms:

RapterLake: Version 05.45.02.0028
AlderLake-N: Version 05.44.45.0015
AlderLake: Version 05.44.34.0053
RocketLake: Version 05.42.52.0027
TigerLake: Version 05.43.12.0057
JasperLake: Version 05.43.01.0026

Acknowledgements

Insyde Software would like to thank Jeremy Boone (@uffeux) of the NCC Group for reporting the vulnerability and engaging in this coordinated disclosure.

Revision History:

Revision Date Description
1.0 05/05/2023 Initial Release
-- -- --

Return to Insyde's Security Pledge