Detections
Analytics

Azure Linux 3.0 Security Update: samba (CVE-2019-3870)

medium Nessus Plugin ID 296034

Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of samba installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2019-3870 advisory.

 - A vulnerability was found in Samba from version (including) 4.9 to versions before 4.9.6 and 4.10.2.
 During the creation of a new Samba AD DC, files are created in a private subdirectory of the install location. This directory is typically mode 0700, that is owner (root) only access. However in some upgraded installations it will have other permissions, such as 0755, because this was the default before Samba 4.8. Within this directory, files are created with mode 0666, which is world-writable, including a sample krb5.conf, and the list of DNS names and servicePrincipalName values to update. (CVE-2019-3870)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2019-3870

Plugin Details

Severity: Medium

ID: 296034

File Name: azure_linux_CVE-2019-3870.nasl

Version: 1.1

Type: local

Published: 1/22/2026

Updated: 1/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.8

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

CVSS Score Source: CVE-2019-3870

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:libsmbclient-devel, p-cpe:/a:microsoft:azure_linux:samba-debuginfo, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:samba-devel, p-cpe:/a:microsoft:azure_linux:ctdb, p-cpe:/a:microsoft:azure_linux:samba-dcerpc, p-cpe:/a:microsoft:azure_linux:samba, p-cpe:/a:microsoft:azure_linux:libwbclient-devel, p-cpe:/a:microsoft:azure_linux:samba-winbind-krb5-locator, p-cpe:/a:microsoft:azure_linux:samba-test-libs, p-cpe:/a:microsoft:azure_linux:samba-client, p-cpe:/a:microsoft:azure_linux:samba-common-tools, p-cpe:/a:microsoft:azure_linux:samba-test, p-cpe:/a:microsoft:azure_linux:python3-samba-test, p-cpe:/a:microsoft:azure_linux:samba-vfs-glusterfs, p-cpe:/a:microsoft:azure_linux:samba-winbind, p-cpe:/a:microsoft:azure_linux:libwbclient, p-cpe:/a:microsoft:azure_linux:samba-libs, p-cpe:/a:microsoft:azure_linux:samba-krb5-printing, p-cpe:/a:microsoft:azure_linux:libsmbclient, p-cpe:/a:microsoft:azure_linux:samba-common-libs, p-cpe:/a:microsoft:azure_linux:libnetapi, p-cpe:/a:microsoft:azure_linux:samba-pidl, p-cpe:/a:microsoft:azure_linux:samba-client-libs, p-cpe:/a:microsoft:azure_linux:samba-tools, p-cpe:/a:microsoft:azure_linux:libnetapi-devel, p-cpe:/a:microsoft:azure_linux:samba-common, p-cpe:/a:microsoft:azure_linux:python3-samba, p-cpe:/a:microsoft:azure_linux:samba-winbind-clients, p-cpe:/a:microsoft:azure_linux:samba-winbind-modules, p-cpe:/a:microsoft:azure_linux:samba-vfs-cephfs

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AzureLinux/release, Host/AzureLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/8/2024

Vulnerability Publication Date: 4/8/2019

Reference Information

CVE: CVE-2019-3870

IAVA: 2019-A-0124-S