CVE-2021-36710 Privilege escalation in n/a

High 8.8 Published 8 Jun 2022 Updated 4 Aug 2024

An attacker can escalate privileges to kernel level by exploiting improper MMU management and GDT address mapping in the ToaruOS kernel.

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-2021-36710?

CVE-2021-36710 is a high-severity vulnerability in n/a, published on 8 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ToaruOS 1.99.2 is affected by incorrect access control via the kernel. Improper MMU management and having a low GDT address allows it to be mapped in userland. A call gate can then be written to escalate to CPL 0.

Weakness: CWE-668

Which versions are affected by CVE-2021-36710?

It affects 1 product.

Products include Toaruos Toaruos.

How do I fix CVE-2021-36710?

No fix has been published for CVE-2021-36710 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-36710 being exploited?

There is no known exploitation of CVE-2021-36710 in the wild and no public exploit code.

Sources

Also known as GHSA-cgmv-c2qg-xxqx.