Alibaba Cloud Linux 3 : 0095: udisks2 (ALINUX3-SA-2025:0095)

high Nessus Plugin ID 240418

Synopsis

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

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2025:0095 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2025-6019:
A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the allow_active setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an allow_active user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux 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

Update the affected packages.

Plugin Details

Severity: High

ID: 240418

File Name: alinux3_sa_2025-0095.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 6/25/2025

Updated: 6/25/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

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

CVSS Score Source: CVE-2025-6019

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/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: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-lvm2-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-lvm2, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libudisks2, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-lsm, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-doc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-iscsi-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libudisks2-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:libudisks2-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-lsm-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:udisks2-iscsi

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/23/2025

Vulnerability Publication Date: 6/18/2025

Reference Information

CVE: CVE-2025-6019

Detections

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