Detections
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Echo: samba: security update to 2:4.13.13+dfsg-1

medium Tenable Cloud Security Plugin ID 464315

Description

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

 - A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ
 (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
 (CVE-2021-3671)

Solution

Update the samba library and its related packages to version 2:4.13.13+dfsg-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2021-3671

Plugin Details

Severity: Medium

ID: 464315

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.68

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-2021-3671

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: 10/12/2021

Reference Information

CVE: CVE-2021-3671