CVE-2023-21900 Missing authorization in Solaris Operating System

Medium 4.0 Published 17 Jan 2023 Updated 16 Sep 2024

High-privileged attackers can modify data and cause partial denial of service in Oracle Solaris via NSSwitch component.

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

What is CVE-2023-21900?

CVE-2023-21900 is a medium-severity missing authorization vulnerability in Oracle Solaris, published on 17 Jan 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: NSSwitch). Supported versions that are affected are 10 and 11. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise Oracle Solaris. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Solaris, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Solaris accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Solaris. CVSS 3.1 Base Score 4.0 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:L).

Which versions are affected by CVE-2023-21900?

It affects 1 product.

Products include Oracle Solaris.

How do I fix CVE-2023-21900?

No fix has been published for CVE-2023-21900 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-2023-21900 being exploited?

There is no known exploitation of CVE-2023-21900 in the wild and no public exploit code.

All Oracle Solaris vulnerabilities

Sources

Also known as GHSA-376r-x37g-4r4q.