Insyde's Security Pledge
Recent Security Advisories
INSYDE-SA-2022014
Product
CVSS Score
Original Date
Last Revised
InsydeH2O
7.5
2022-02-01
Summary
SMM memory corruption vulnerability allowing a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Vulnerability Details
CVSS Vector: AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
This corresponds to CVE-2021-33625. It affects the HddPassword driver. It was reported by the Binarly efiXplorer team.
Solution Information
Fixes are available in the InsydeH2O kernel: Kernel 5.1: 05.16.23, Kernel 5.2: 05.26.23, Kernel 5.3: 05.35.23, Kernel 5.4: 05.43.22, Kernel 5.5: 05.51.22
Acknowledgements
Insyde Software would like to thank Binarly for reporting this issue.
Revision History
Revision #
Date
Description
1
2022-02-01
Initial Release