CVE-2023-28468 Missing authorization in n/a

Medium 6.5 Published 3 Aug 2023 Updated 17 Oct 2024

Attackers can modify SPI flash at runtime via an exposed SMM handler, enabling privilege escalation and data tampering in InsydeH2O firmware.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-28468?

CVE-2023-28468 is a medium-severity missing authorization vulnerability in n/a, published on 3 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-863

Which versions are affected by CVE-2023-28468?

It affects 1 product.

Products include Insyde Kernel.

How do I fix CVE-2023-28468?

No fix has been published for CVE-2023-28468 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2023-28468 being exploited?

There is no known exploitation of CVE-2023-28468 in the wild and no public exploit code.

Sources

Also known as GHSA-564w-j7mv-2v7q.