RHEL 9 : grub2 (RHSA-2025:6990)

medium Nessus Plugin ID 237317

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Synopsis

The remote Red Hat host is missing one or more security updates for grub2.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:6990 advisory.

The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices.

Security Fix(es):

* grub2: reader/jpeg: Heap OOB Write during JPEG parsing (CVE-2024-45774)

* grub2: commands/extcmd: Missing check for failed allocation (CVE-2024-45775)

* grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write and Read. (CVE-2024-45776)

* grub2: fs/ufs: OOB write in the heap (CVE-2024-45781)

* grub2: fs/hfs+: refcount can be decremented twice (CVE-2024-45783)

* grub2: command/gpg: Use-after-free due to hooks not being removed on module unload (CVE-2025-0622)

* grub2: UFS: Integer overflow may lead to heap based out-of-bounds write when handling symlinks (CVE-2025-0677)

* grub2: read: Integer overflow may lead to out-of-bounds write (CVE-2025-0690)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL grub2 package based on the guidance in RHSA-2025:6990.

Plugin Details

Severity: Medium

ID: 237317

File Name: redhat-RHSA-2025-6990.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/27/2025

Updated: 5/27/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2025-0690

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

CVSS Score Source: CVE-2024-45781

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-pc, p-cpe:/a:redhat:enterprise_linux:grub2-pc-modules, p-cpe:/a:redhat:enterprise_linux:grub2-tools-extra, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-tools-efi, p-cpe:/a:redhat:enterprise_linux:grub2-tools, p-cpe:/a:redhat:enterprise_linux:grub2-tools-minimal, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64, p-cpe:/a:redhat:enterprise_linux:grub2, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le-modules, p-cpe:/a:redhat:enterprise_linux:grub2-common

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2025

Vulnerability Publication Date: 4/11/2024

Reference Information

CVE: CVE-2024-45774, CVE-2024-45775, CVE-2024-45776, CVE-2024-45781, CVE-2024-45783, CVE-2025-0622, CVE-2025-0677, CVE-2025-0690

CWE: 252, 416, 787, 911

RHSA: 2025:6990

Detections

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