CVE-2020-25719

HIGH

Samba 4.0.0-4.13.14 - Improper Authentication via Kerberos PAC Handling

Title source: llm
STIX 2.1

Description

A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.

References (3)

Core 3
Core References
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202309-06
Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2019732

Scores

CVSS v3 7.2
EPSS 0.0021
EPSS Percentile 43.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-287 CWE-362
Status published
Products (31)
canonical/ubuntu_linux 20.04
canonical/ubuntu_linux 21.04
canonical/ubuntu_linux 21.10
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 33
fedoraproject/fedora 34
fedoraproject/fedora 35
redhat/enterprise_linux 7.0
redhat/enterprise_linux 8.0
... and 21 more
Published Feb 18, 2022
Tracked Since Feb 18, 2026