Vulnerability-Lookup

alsa-2024:0468

Vulnerability from osv_almalinux

Published

2024-01-25 00:00

Modified

2024-01-26 10:16

Summary

Moderate: grub2 security update

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.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2024:0468	ADVISORY
	https://access.redhat.com/security/cve/CVE-2023-4001	REPORT
	https://bugzilla.redhat.com/2224951	REPORT
	https://errata.almalinux.org/9/ALSA-2024-0468.html	ADVISORY

JSON

To clipboard

{
  "affected": [
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      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "grub2-common"
      },
      "ranges": [
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  "id": "ALSA-2024:0468",
  "modified": "2024-01-26T10:16:18Z",
  "published": "2024-01-25T00:00:00Z",
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  ],
  "summary": "Moderate: grub2 security update"
}

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

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.

Severity

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-01-22 19:43 UTC

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

redhat redhat root

References

10 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…
http://www.openwall.com/lists/oss-security/2024/01/15/3	x_transferred
https://lists.fedoraproject.org/archives/list/pac…	x_transferred
https://lists.fedoraproject.org/archives/list/pac…	x_transferred
https://security.netapp.com/advisory/ntap-2024021…	x_transferred

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.