Detections
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Echo: samba: security update to 2:4.11.3+dfsg-1

medium Tenable Self-Hosted Container Security Plugin ID 465292

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2019-14870)

Solution

Update the samba library and its related packages to version 2:4.11.3+dfsg-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2019-14870

Plugin Details

Severity: Medium

ID: 465292

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 6.91

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2019-14870

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/2/2026

Vulnerability Publication Date: 12/10/2019

Reference Information

CVE: CVE-2019-14870

IAVA: 2019-A-0446-S