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Echo: samba: security update to 2:4.17.12+dfsg-0+deb12u1

medium Tenable Self-Hosted Container Security Plugin ID 462856

Description

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

 - A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in
 Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and
 users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and
 passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain
 access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC
 distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-
 of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker
 influence. (CVE-2023-4154)

Solution

Update the samba library and its related packages to version 2:4.17.12+dfsg-0+deb12u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2023-4154

Plugin Details

Severity: Medium

ID: 462856

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: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-4154

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:H/I:N/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: 10/10/2023

Reference Information

CVE: CVE-2023-4154

IAVA: 2023-A-0535-S