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CVE-2022-0336

8.8 · HIGH

The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database.

Published Aug 29, 2022CWE-276EPSS 1.65%

Overview

CVE-2022-0336 is a high-severity vulnerability. It was published on August 29, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/security/cve/CVE-2022-0336Refbugzilla.redhat.com/show_bug.cgi?id=2046134Refbugzilla.samba.org/show_bug.cgi?id=14950GitHubgithub.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3cGitHubgithub.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400Refsecurity.gentoo.org/glsa/202309-06Refwww.samba.org/samba/security/CVE-2022-0336.htmlRefaccess.redhat.com/security/cve/CVE-2022-0336Refbugzilla.redhat.com/show_bug.cgi?id=2046134Refbugzilla.samba.org/show_bug.cgi?id=14950

How CyberStrike helps

Frequently asked questions

What is CVE-2022-0336?

CVE-2022-0336 is a high-severity vulnerability. It was published on August 29, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2022-0336?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-0336?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-0336?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-0336 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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