CVE-2020-17049
Public on 2020-11-11
Modified on 2024-05-17
Description
It was found that the Kerberos Key Distribution Center (KDC) delegation feature, Service for User (S4U), did not sufficiently protect the tickets it's providing from tempering. A malicious, authenticated service principal allowed to delegate could use this flaw to impersonate a non-forwardable user.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | samba | 2022-12-01 | ALAS-2022-1642 | Fixed |
| Amazon Linux 2 - Core | samba | Pending Fix | ||
| Amazon Linux 2023 | samba | 2023-02-17 | ALAS2023-2023-032 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv2 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
| NVD | CVSSv3 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |