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CVE-2020-25719

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Samba ≫ Samba Version >= 4.0.0 < 4.13.14
Samba ≫ Samba Version >= 4.14.0 < 4.14.10
Samba ≫ Samba Version >= 4.15.0 < 4.15.2
Debian ≫ Debian Linux Version 9.0
Debian ≫ Debian Linux Version 10.0
Fedoraproject ≫ Fedora Version 33
Fedoraproject ≫ Fedora Version 34
Fedoraproject ≫ Fedora Version 35
Canonical ≫ Ubuntu Linux Version 20.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 21.04
Canonical ≫ Ubuntu Linux Version 21.10
Redhat ≫ Enterprise Linux Version 7.0
Redhat ≫ Enterprise Linux Version 8.0
Redhat ≫ Enterprise Linux Eus Version 8.2
Redhat ≫ Enterprise Linux Eus Version 8.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.69% 0.748
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.2 1.2 5.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NIST 9 8 10
AV:N/AC:L/Au:S/C:C/I:C/A:C
CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://security.gentoo.org/glsa/202309-06
https://bugzilla.redhat.com/show_bug.cgi?id=2019732
Patch
Third Party Advisory
Issue Tracking
https://www.samba.org/samba/security/CVE-2020-25719.html
Vendor Advisory
Mitigation