CVE-2020-17049

Public on 2020-11-11
Modified on 2024-01-30
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 severity
Medium
CVSS v3 Base Score
7.2
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 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