CVE-2019-14870
Samba Kerberos Constrained Delegation Bypass Vulnerability
Description
All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.
INFO
Published Date :
Dec. 10, 2019, 11:15 p.m.
Last Modified :
Nov. 7, 2023, 3:05 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.5
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2019-14870
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-14870.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-14870 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-14870 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/ [No types assigned] Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/ [No types assigned] Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/ Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/ -
CVE Modified by [email protected]
Oct. 08, 2023
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202310-06 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 16, 2023
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20230216-0008/ [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 09, 2023
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/ Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202003-52 No Types Assigned https://security.gentoo.org/glsa/202003-52 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Changed CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 26, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html [No Types Assigned] -
CVE Modified by [email protected]
May. 29, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html [No Types Assigned] -
CVE Modified by [email protected]
Mar. 25, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202003-52 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 03, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 23, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 18, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14870 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14870 Issue Tracking, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/ Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20191210-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20191210-0002/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4217-1/ No Types Assigned https://usn.ubuntu.com/4217-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4217-2/ No Types Assigned https://usn.ubuntu.com/4217-2/ Third Party Advisory Changed Reference Type https://www.samba.org/samba/security/CVE-2019-14870.html No Types Assigned https://www.samba.org/samba/security/CVE-2019-14870.html Vendor Advisory Changed Reference Type https://www.synology.com/security/advisory/Synology_SA_19_40 No Types Assigned https://www.synology.com/security/advisory/Synology_SA_19_40 Third Party Advisory Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.9.17 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.10.0 up to (excluding) 4.10.11 *cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* versions from (including) 4.11.0 up to (excluding) 4.11.3 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 18, 2019
Action Type Old Value New Value Added Reference https://www.synology.com/security/advisory/Synology_SA_19_40 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 12, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 11, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4217-2/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-14870 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-14870
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.24 }} -0.00%
score
0.61408
percentile