Vulnerability-Lookup

RHSA-2024:0456

Vulnerability from csaf_redhat - Published: 2024-01-25 08:59 - Updated: 2026-03-18 02:32

Summary

Red Hat Security Advisory: grub2 security update

Severity

Moderate

Notes

Topic: An update for grub2 is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: 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: bypass the GRUB password protection feature (CVE-2023-4001) 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.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2023-4001

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.

6.8 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-290 - Authentication Bypass by Spoofing

Affected products

Fixed 40 products

Product	Version	Remediation
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-1:2.06-61.el9_2.2.src	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-common-1:2.06-61.el9_2.2.noarch	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-debuginfo-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-debuginfo-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-debuginfo-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-debugsource-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-debugsource-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-debugsource-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-efi-aa64-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-efi-aa64-cdboot-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-efi-aa64-modules-1:2.06-61.el9_2.2.noarch	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-efi-x64-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-efi-x64-cdboot-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-efi-x64-modules-1:2.06-61.el9_2.2.noarch	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-emu-debuginfo-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-emu-debuginfo-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-pc-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-pc-modules-1:2.06-61.el9_2.2.noarch	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-ppc64le-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-ppc64le-modules-1:2.06-61.el9_2.2.noarch	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-debuginfo-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-debuginfo-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-debuginfo-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-efi-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-efi-debuginfo-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-extra-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-extra-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-extra-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-extra-debuginfo-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-extra-debuginfo-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-extra-debuginfo-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-minimal-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-minimal-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-minimal-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-minimal-debuginfo-1:2.06-61.el9_2.2.aarch64	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-minimal-debuginfo-1:2.06-61.el9_2.2.ppc64le	—	Vendor Fix fix
Unresolved product id: BaseOS-9.2.0.Z.EUS:grub2-tools-minimal-debuginfo-1:2.06-61.el9_2.2.x86_64	—	Vendor Fix fix

Threats

Impact Moderate

References

9 references

URL	Category
https://access.redhat.com/errata/RHSA-2024:0456	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2224951	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2023-4001	self
https://bugzilla.redhat.com/show_bug.cgi?id=2224951	external
https://www.cve.org/CVERecord?id=CVE-2023-4001	external
https://nvd.nist.gov/vuln/detail/CVE-2023-4001	external
https://dfir.ru/2024/01/15/cve-2023-4001-a-vulner…	external

Acknowledgments

Maxim Suhanov

JSON

To clipboard

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          "category": "general",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "grub2: bypass the GRUB password protection feature"
    }
  ]
}

CVE-2023-4001 (GCVE-0-2023-4001)

Vulnerability from cvelistv5 – Published: 2024-01-15 11:10 – Updated: 2025-11-20 19:52

Title

Grub2: bypass the grub password protection feature

Summary

Severity

6.8 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

redhat

References

6 references

URL	Tags
https://access.redhat.com/errata/RHSA-2024:0437	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0456	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0468	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-4001	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2224951	issue-trackingx_refsource_REDHAT
https://dfir.ru/2024/01/15/cve-2023-4001-a-vulner…

Impacted products

4 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 1:2.06-70.el9_3.2 , < * (rpm) cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	Unaffected: 1:2.06-27.el9_0.16 , < * (rpm) cpe:/o:redhat:rhel_eus:9.0::baseos
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	Unaffected: 1:2.06-61.el9_2.2 , < * (rpm) cpe:/o:redhat:rhel_eus:9.2::baseos
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

Date Public

2024-01-09 00:00

Credits

Red Hat would like to thank Maxim Suhanov for reporting this issue.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2024:0456

CVE-2023-4001 (GCVE-0-2023-4001)

Tags

Sightings

Nomenclature