CVE-2022-0336

Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 29 Aug 2022, 00:00
Last modified:02 Aug 2024, 23:25

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
0.38% LOW
0% probability -0.08%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Aug 2022, 00:00
Published
Vulnerability first disclosed
02 Aug 2024, 23:25
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.38%• Percentile: 60%

Techniques & Countermeasures

  • CWE-276•Incorrect Default Permissions

    During installation, installed file permissions are set to allow anyone to modify those files.

Affected Systems

  • fedoraproject•fedora

    34 | 35

  • samba•samba

    ≥ 4.0.0, < 4.13.17 | ≥ 4.14.0, < 4.14.12 | ≥ 4.15.0, < 4.15.4

References (7)