CVE-2021-2443 Denial of service in VM VirtualBox
A local high-privileged attacker can cause a complete denial of service and unauthorized data access in Oracle VM VirtualBox on Linux and Solaris 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-2021-2443?
CVE-2021-2443 is a high-severity denial of service vulnerability in Oracle Vm Virtualbox, published on 20 Jul 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 6.1.24. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox as well as unauthorized update, insert or delete access to some of Oracle VM VirtualBox accessible data and unauthorized read access to a subset of Oracle VM VirtualBox accessible data. Note: This vulnerability applies to Solaris x86 and Linux systems only. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H).
Which versions are affected by CVE-2021-2443?
It affects 1 product.
Products include Oracle Vm Virtualbox.
How do I fix CVE-2021-2443?
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-2021-2443 being exploited?
There is no known exploitation of CVE-2021-2443 in the wild and no public exploit code.
Other vulnerabilities in Oracle Vm Virtualbox
- CVE-2016-5605 Unspecified vulnerability in the Oracle VM VirtualBox component before 5.1.4 in Oracle Virtualization allows remote attackers to affect conf
- CVE-2018-3294 Privilege escalation in VM VirtualBox
- CVE-2024-21112 Privilege escalation in VM VirtualBox
- CVE-2024-21113 Privilege escalation in VM VirtualBox
- CVE-2024-21114 Privilege escalation in VM VirtualBox
Sources
Also known as GHSA-9whh-jc85-fxmx, UBUNTU-CVE-2021-2443.