Alibaba Cloud Linux 3 : 0049: grub2 (ALINUX3-SA-2025:0049)

high Nessus Plugin ID 236322

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-2025:0049 advisory.

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

CVE-2025-0624:
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.

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: 236322

File Name: alinux3_sa_2025-0049.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.1

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2025-0624

CVSS v3

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.6

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

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

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-ia32, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-pc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-ia32-cdboot, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-efi-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-aa64-modules, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-aa64-cdboot, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-extra, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-extra-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-minimal, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-ia32-modules, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-aa64, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-x64-cdboot, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-x64-modules, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-pc-modules, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-minimal-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-common, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-efi-x64, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:grub2-tools-efi

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2025

Vulnerability Publication Date: 2/19/2025

Reference Information

CVE: CVE-2025-0624

Detections

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