CVE-2022-21439 Denial of service in Solaris Operating System

Medium 4.2 Published 19 Jul 2022 Updated 24 Sep 2024

A high-privileged attacker with local access can cause a complete denial of service on Oracle Solaris by triggering a crash or hang.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2022-21439?

CVE-2022-21439 is a medium-severity denial of service vulnerability in Oracle Solaris, published on 19 Jul 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). Supported versions that are affected are 10 and 11. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. CVSS 3.1 Base Score 4.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H).

Which versions are affected by CVE-2022-21439?

It affects 1 product.

Products include Oracle Solaris.

How do I fix CVE-2022-21439?

No fix has been published for CVE-2022-21439 yet. Limit exposure of the affected software until one is available.

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-2022-21439 being exploited?

There is no known exploitation of CVE-2022-21439 in the wild and no public exploit code.

All Oracle Solaris vulnerabilities

Sources

Also known as GHSA-mfmm-5c37-xrh6.