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Echo: samba: security update to 2:4.9.2+dfsg-2

medium Tenable Cloud Security Plugin ID 458806

Description

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

 - Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when
 Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify
 that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will
 not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been
 issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-
 mit-ad-dc is specified to the configure command. (CVE-2018-16853)

Solution

Update the samba library and its related packages to version 2:4.9.2+dfsg-2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2018-16853

Plugin Details

Severity: Medium

ID: 458806

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-16853

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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: 11/27/2018

Reference Information

CVE: CVE-2018-16853

IAVA: 2018-A-0384-S