CVE-2023-21900: Vulnerability in the Oracle Solaris product of Oracle Systems (component: NSSwitch). Supported versions that are affected are 10 and 11. Difficult t...

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).

Metrics

CVSS 3.1

4/10

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:L

EPSS Probability

0.36%

28.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Oracle	Solaris	10
Oracle	Solaris	11

References

https://www.oracle.com/security-alerts/cpujan2023.htmlPatch, Vendor Advisory
https://www.oracle.com/security-alerts/cpujan2023.htmlPatch, Vendor Advisory

Timeline

Published: Jan 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21900?

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).

How severe is CVE-2023-21900?

CVE-2023-21900 has a CVSS score of 4/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21900?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.