Debian dla-4692 : ctdb - security update

critical Nessus Plugin ID 328762

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4692 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4692-1 [email protected] https://www.debian.org/lts/security/ Markus Koschany July 21, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : samba Version : 2:4.13.13+dfsg-1~deb11u8 CVE ID : CVE-2026-2340 CVE-2026-3012 CVE-2026-3238 CVE-2026-4408 CVE-2026-4480

Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix, which might result in bypass of access checks, overwrite of files in unintended situations using the WORM vfs module, installing CA certificates over http without verification when auto-enrollment GPO is enabled, denial of service or remote code execution.

For Debian 11 bullseye, these problems have been fixed in version 2:4.13.13+dfsg-1~deb11u8.

We recommend that you upgrade your samba packages.

For the detailed security status of samba please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/samba

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the ctdb packages.

Plugin Details

Severity: Critical

ID: 328762

File Name: debian_DLA-4692.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 7/21/2026

Updated: 7/21/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.05

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-4480

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:ctdb, p-cpe:/a:debian:debian_linux:libnss-winbind, p-cpe:/a:debian:debian_linux:libpam-winbind, p-cpe:/a:debian:debian_linux:libsmbclient-dev, p-cpe:/a:debian:debian_linux:libsmbclient, p-cpe:/a:debian:debian_linux:libwbclient-dev, p-cpe:/a:debian:debian_linux:libwbclient0, p-cpe:/a:debian:debian_linux:python3-samba, p-cpe:/a:debian:debian_linux:registry-tools, p-cpe:/a:debian:debian_linux:samba-common-bin, p-cpe:/a:debian:debian_linux:samba-common, p-cpe:/a:debian:debian_linux:samba-dev, p-cpe:/a:debian:debian_linux:samba-dsdb-modules, p-cpe:/a:debian:debian_linux:samba-libs, p-cpe:/a:debian:debian_linux:samba-testsuite, p-cpe:/a:debian:debian_linux:samba-vfs-modules, p-cpe:/a:debian:debian_linux:samba, p-cpe:/a:debian:debian_linux:smbclient, p-cpe:/a:debian:debian_linux:winbind

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/21/2026

Vulnerability Publication Date: 5/26/2026

Reference Information

CVE: CVE-2026-2340, CVE-2026-3012, CVE-2026-3238, CVE-2026-4408, CVE-2026-4480

IAVA: 2026-A-0510

Detections

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