CVE-2022-0336

 

Published at: - 29-08-2022 05:15

Last modified: - 01-09-2022 10:05

Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://www.samba.org/samba/security/CVE-2022-0336.html
• https://access.redhat.com/security/cve/CVE-2022-0336
• https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c
• https://bugzilla.redhat.com/show_bug.cgi?id=2046134
• https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400
• https://bugzilla.samba.org/show_bug.cgi?id=14950

 

Keywords

NVD

 

CVE-2022-0336

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures