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

medium Tenable Self-Hosted Container Security Plugin ID 461858

Description

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

 - Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service.
 During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the
 entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the
 Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is
 no further vulnerability associated with this issue, merely a denial of service. (CVE-2018-16851)

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-2018-16851

Plugin Details

Severity: Medium

ID: 461858

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

Temporal Score: 3

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

CVSS Score Source: CVE-2018-16851

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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-2018-16851

IAVA: 2018-A-0384-S