Detections
Analytics

Azure Linux 3.0 Security Update: samba (CVE-2021-43566)

low Nessus Plugin ID 295804

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-2021-43566 advisory.

 - All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed. (CVE-2021-43566)

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-2021-43566

Plugin Details

Severity: Low

ID: 295804

File Name: azure_linux_CVE-2021-43566.nasl

Version: 1.1

Type: local

Published: 1/22/2026

Updated: 1/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Low

Base Score: 1.2

Temporal Score: 0.9

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

CVSS Score Source: CVE-2021-43566

CVSS v3

Risk Factor: Low

Base Score: 2.5

Temporal Score: 2.3

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

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: 1/10/2022

Reference Information

CVE: CVE-2021-43566

IAVA: 2022-A-0020