Amazon Linux 2023 : libudisks2, libudisks2-devel, udisks2 (ALAS2023-2025-1178)

high Nessus Plugin ID 264835

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Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1178 advisory.

A flaw was found in the Udisks daemon, where it allows unprivileged users to create loop devices using the D-BUS system. This is achieved via the loop device handler, which handles requests sent through the D-BUS interface. As two of the parameters of this handle, it receives the file descriptor list and index specifying the file where the loop device should be backed. The function itself validates the index value to ensure it isn't bigger than the maximum value allowed. However, it fails to validate the lower bound, allowing the index parameter to be a negative value. Under these circumstances, an attacker can cause the UDisks daemon to crash or perform a local privilege escalation by gaining access to files owned by privileged users. (CVE-2025-8067)

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 udisks2 --releasever 2023.8.20250915' or or 'dnf update --advisory ALAS2023-2025-1178 --releasever 2023.8.20250915' to update your system.

Plugin Details

Severity: High

ID: 264835

File Name: al2023_ALAS2023-2025-1178.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 9/15/2025

Updated: 9/15/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

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

CVSS Score Source: CVE-2025-8067

CVSS v3

Risk Factor: High

Base Score: 8.5

Temporal Score: 7.6

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:udisks2-lsm, p-cpe:/a:amazon:linux:udisks2-lvm2-debuginfo, p-cpe:/a:amazon:linux:libudisks2-debuginfo, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:udisks2-debugsource, p-cpe:/a:amazon:linux:libudisks2-devel, p-cpe:/a:amazon:linux:udisks2, p-cpe:/a:amazon:linux:udisks2-lsm-debuginfo, p-cpe:/a:amazon:linux:udisks2-lvm2, p-cpe:/a:amazon:linux:udisks2-debuginfo, p-cpe:/a:amazon:linux:libudisks2

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

Exploit Available: true

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2025

Vulnerability Publication Date: 8/28/2025

Reference Information

CVE: CVE-2025-8067

Detections

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