CVE-2023-39284 Missing authorization in n/a

Medium 5.5 Published 2 Nov 2023 Updated 5 Sep 2024

Attackers can exploit unsanitized arguments in the SMI handler to execute arbitrary code or escalate privileges within the 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-2023-39284?

CVE-2023-39284 is a medium-severity missing authorization vulnerability in Insyde Insydeh2o, published on 2 Nov 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 IhisiServicesSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There are arbitrary calls to SetVariable with unsanitized arguments in the SMI handler.

Which versions are affected by CVE-2023-39284?

It affects 1 product.

Products include Insyde Insydeh2o.

How do I fix CVE-2023-39284?

No fix has been published for CVE-2023-39284 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-2023-39284 being exploited?

There is no known exploitation of CVE-2023-39284 in the wild and no public exploit code.

All Insyde Insydeh2o vulnerabilities

Sources

Also known as GHSA-5j4m-86cg-p2mg.