An issue was discovered in FvbServicesRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The FvbServicesRuntimeDxe SMM module exposes an SMI handler that allows an attacker to interact with the SPI flash at run-time from the OS.
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Link | Tags |
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https://www.insyde.com/security-pledge | not applicable |
https://www.insyde.com/security-pledge/SA-2023039 | vendor advisory |