Medium severity6.8NVD Advisory· Published Jan 15, 2024· Updated Jun 17, 2026
CVE-2023-4001
CVE-2023-4001
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
20cpe:/o:redhat:enterprise_linux:8+ 1 more
- cpe:/o:redhat:enterprise_linux:8
- cpe:/o:redhat:enterprise_linux:9::baseosrange: 1:2.06-70.el9_3.2
- Red Hat/Red Hat Enterprise Linux 9.0 Extended Update Supportv5cpe:/o:redhat:rhel_eus:9.0::baseosRange: 1:2.06-27.el9_0.16
- Red Hat/Red Hat Enterprise Linux 9.2 Extended Update Supportv5cpe:/o:redhat:rhel_eus:9.2::baseosRange: 1:2.06-61.el9_2.2
- osv-coords15 versionspkg:rpm/almalinux/grub2-commonpkg:rpm/almalinux/grub2-efi-aa64pkg:rpm/almalinux/grub2-efi-aa64-cdbootpkg:rpm/almalinux/grub2-efi-aa64-modulespkg:rpm/almalinux/grub2-efi-x64pkg:rpm/almalinux/grub2-efi-x64-cdbootpkg:rpm/almalinux/grub2-efi-x64-modulespkg:rpm/almalinux/grub2-pcpkg:rpm/almalinux/grub2-pc-modulespkg:rpm/almalinux/grub2-ppc64lepkg:rpm/almalinux/grub2-ppc64le-modulespkg:rpm/almalinux/grub2-toolspkg:rpm/almalinux/grub2-tools-efipkg:rpm/almalinux/grub2-tools-extrapkg:rpm/almalinux/grub2-tools-minimal
< 1:2.06-70.el9_3.2.alma.1+ 14 more
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
- (no CPE)range: < 1:2.06-70.el9_3.2.alma.1
Patches
Vulnerability mechanics
References
10- access.redhat.com/security/cve/CVE-2023-4001nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
- dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/nvdThird Party Advisory
- www.openwall.com/lists/oss-security/2024/01/15/3nvd
- access.redhat.com/errata/RHSA-2024:0437nvd
- access.redhat.com/errata/RHSA-2024:0456nvd
- access.redhat.com/errata/RHSA-2024:0468nvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3OBADMKHQLJOBA32Q7XPNSYMVHVAFDCB/nvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHLZQ47HM64NDOHMHYO7VIJFYD5ZPPYN/nvd
- security.netapp.com/advisory/ntap-20240216-0006/nvd
News mentions
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