CVE-2021-2312 Denial of service in VM VirtualBox

Medium 4.4 Published 22 Apr 2021 Updated 26 Sep 2024

A local high-privileged attacker can cause a complete denial of service in Oracle VM VirtualBox on Windows systems.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2021-2312?

CVE-2021-2312 is a medium-severity denial of service vulnerability in Oracle Vm Virtualbox, published on 22 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.20. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox. Note: This vulnerability applies to Windows systems only. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Which versions are affected by CVE-2021-2312?

It affects 1 product.

Products include Oracle Vm Virtualbox.

How do I fix CVE-2021-2312?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-2312 being exploited?

There is no known exploitation of CVE-2021-2312 in the wild and no public exploit code.

All Oracle Vm Virtualbox vulnerabilities

Sources

Also known as GHSA-g3fx-qqcr-xfh6, UBUNTU-CVE-2021-2312.