A vulnerability exists in SMM (System Management Mode)...
High severity
Unreviewed
Published
Feb 10, 2022
to the GitHub Advisory Database
•
Updated Feb 3, 2023
Description
Published by the National Vulnerability Database
Feb 3, 2022
Published to the GitHub Advisory Database
Feb 10, 2022
Last updated
Feb 3, 2023
A vulnerability exists in SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated table variable EFI_BOOT_SERVICES. This allows an attacker who is capable of executing code in DXE phase to exploit this vulnerability to escalate privileges to SMM. The attacker can overwrite the LocateProtocol or Freepool memory address location to execute unwanted code.
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