The version of samba installed on the remote host is prior to 4.10.16-24.68. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1896 advisory.

    When doing NTLM authentication, the client sends replies tocryptographic challenges back to the server.
    These replieshave variable length. Winbind did not properly bounds-checkthe lan manager response length,     which despite the lanmanager version no longer being used is still part of theprotocol.

    If the system is running Samba's ntlm_auth as authentication backendfor services like Squid (or a very     unusual configuration withFreeRADIUS), the vulnarebility is remotely exploitable

    If not so configured, or to exploit this vulnerability locally, theuser must have access to the privileged     winbindd UNIX domainsocket (a subdirectory with name 'winbindd_privileged' under statedirectory, as set     in the smb.conf).

    This access is normally only given so special system services likeSquid or FreeRADIUS, that use this     feature. (CVE-2022-2127)

    SMB client can truncate files to 0 bytes by opening files with OVERWRITE disposition when using the     acl_xattr Samba VFS module with the smb.conf setting acl_xattr:ignore system acls = yes (CVE-2023-4091)

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

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

Detections

Analytics

Amazon Linux AMI : samba (ALAS-2023-1896)

medium Nessus Plugin ID 186591

Version 1.2

Version 1.1

Version 1.0

Version 1.2 Jan 21, 2026, 5:00 PM IAVM reference Plugin Feed: 202601211700
Version 1.1 Dec 12, 2024, 9:55 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202412120955
Version 1.0 Dec 6, 2023, 12:08 AM New Plugin Feed: 202312060008