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AlmaLinux 9 : grub2 (ALSA-2024:0468)

medium Nessus Plugin ID 189622

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2024:0468 advisory.

 - An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the /boot/ file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.
 (CVE-2023-4001)

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://errata.almalinux.org/9/ALSA-2024-0468.html

Plugin Details

Severity: Medium

ID: 189622

File Name: alma_linux_ALSA-2024-0468.nasl

Version: 1.0

Type: local

Published: 1/26/2024

Updated: 1/26/2024

Supported Sensors: Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-4001

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:alma:linux:grub2-tools-minimal, cpe:/o:alma:linux:9::appstream, p-cpe:/a:alma:linux:grub2-efi-x64-modules, p-cpe:/a:alma:linux:grub2-pc, p-cpe:/a:alma:linux:grub2-efi-aa64-cdboot, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:grub2-pc-modules, p-cpe:/a:alma:linux:grub2-efi-x64, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::resilientstorage, p-cpe:/a:alma:linux:grub2-efi-aa64-modules, cpe:/o:alma:linux:9::sap_hana, p-cpe:/a:alma:linux:grub2-efi-x64-cdboot, p-cpe:/a:alma:linux:grub2-ppc64le-modules, p-cpe:/a:alma:linux:grub2-tools-extra, cpe:/o:alma:linux:9::sap, p-cpe:/a:alma:linux:grub2-tools-efi, cpe:/o:alma:linux:9::crb, p-cpe:/a:alma:linux:grub2-tools, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9, p-cpe:/a:alma:linux:grub2-ppc64le, p-cpe:/a:alma:linux:grub2-common, cpe:/o:alma:linux:9::nfv, p-cpe:/a:alma:linux:grub2-efi-aa64, cpe:/o:alma:linux:9::baseos

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/25/2024

Vulnerability Publication Date: 1/15/2024

Reference Information

CVE: CVE-2023-4001

CWE: 290