01 Record
CVE-2023-4001
Grub2: bypass the grub password protection feature
MediumPUBLISHEDCNA: redhat
CNA base score6.8 CVSS v3.xCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
Grub2: bypass the grub password protection feature
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.54% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 45.2% of scored records. A rank, not a probability.
- NVD base score
- 6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2024-01-15 11:10Z2 YR AGO
- Last updated
- 2025-11-20 19:52Z11 MO AGO
- Reserved
- 2023-07-28
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.8)
- CNA CVSS vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-290Authentication Bypass by SpoofingBase
- Data version
- 5.2
- Document digest
- 75aa4ef8e24b607c98880b82a2e731225af179a5f53ef13419fd829fda55601e
05 Affected products
VendorProductVersionsPlatforms
06 References
- access.redhat.comRHSA-2024:0437https://access.redhat.com/errata/RHSA-2024:0437
- access.redhat.comRHSA-2024:0456https://access.redhat.com/errata/RHSA-2024:0456
- access.redhat.comRHSA-2024:0468https://access.redhat.com/errata/RHSA-2024:0468
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4001
- bugzilla.redhat.comRHBZ#2224951https://bugzilla.redhat.com/show_bug.cgi?id=2224951
- dfir.ruhttps://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2024/01/15/3
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3OBADMKHQLJOBA32Q7XPNSYMVHVAFDCB/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHLZQ47HM64NDOHMHYO7VIJFYD5ZPPYN/
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240216-0006/
07 Fixed in
AlmaLinux 9
- grub2-common Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-aa64 Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-aa64-cdboot Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-aa64-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-x64 Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-x64-cdboot Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-x64-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-pc Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-pc-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-ppc64le Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-ppc64le-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools-efi Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools-extra Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools-minimal Fixed in 1:2.06-70.el9_3.2.alma.1
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- grub2-common Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-aa64 Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-aa64-cdboot Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-aa64-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-x64 Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-x64-cdboot Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-efi-x64-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-pc Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-pc-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-ppc64le Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-ppc64le-modules Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools-efi Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools-extra Fixed in 1:2.06-70.el9_3.2.alma.1
- grub2-tools-minimal Fixed in 1:2.06-70.el9_3.2.alma.1
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- grub2-signed No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.