Detections
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Amazon Linux 2023 : cifs-utils, cifs-utils-devel, cifs-utils-info (ALAS2023-2026-3291)

high Nessus Plugin ID 371898

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3291 advisory.

 A flaw was found in cifs-utils. This flaw allows an unprivileged local user to achieve privilege escalation. When a privileged service mounts a Common Internet File System (CIFS) share using a user- controlled credentials file, input values are not properly sanitized before being assembled into mount options. A local attacker can exploit this vulnerability to inject unauthorized mount options, allowing them to bypass permission checks and execute files with administrative (root) privileges.
 (CVE-2026-104715)

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

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

Solution

Run 'dnf update cifs-utils --releasever 2023.12.20261026' or or 'dnf update --advisory ALAS2023-2026-3291 --releasever 2023.12.20261026' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-3291.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2026-104715.html

Plugin Details

Severity: High

ID: 371898

File Name: al2023_ALAS2023-2026-3291.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/25/2026

Updated: 10/25/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.41

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-104715

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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:amazon:linux:2023, p-cpe:/a:amazon:linux:cifs-utils-debuginfo, p-cpe:/a:amazon:linux:cifs-utils-debugsource, p-cpe:/a:amazon:linux:cifs-utils-devel, p-cpe:/a:amazon:linux:cifs-utils-info, p-cpe:/a:amazon:linux:cifs-utils, p-cpe:/a:amazon:linux:pam_cifscreds-debuginfo, p-cpe:/a:amazon:linux:pam_cifscreds

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/24/2026

Vulnerability Publication Date: 10/16/2026

Reference Information

CVE: CVE-2026-104715

IAVB: 2026-B-0298