Grub2: bypass the grub password protection feature (Red Hat Red Hat Enterprise Linux 9)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.54 % · percentile 45 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-290 — Authentication Bypass by Spoofing
References
- https://access.redhat.com/errata/RHSA-2024:0437
- https://access.redhat.com/errata/RHSA-2024:0456
- https://access.redhat.com/errata/RHSA-2024:0468
- https://access.redhat.com/security/cve/CVE-2023-4001
- https://bugzilla.redhat.com/show_bug.cgi?id=2224951
- https://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager/
- http://www.openwall.com/lists/oss-security/2024/01/15/3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3OBADMKHQLJOBA32Q7XPNSYMVHVAFDCB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHLZQ47HM64NDOHMHYO7VIJFYD5ZPPYN/
- https://security.netapp.com/advisory/ntap-20240216-0006/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2023-53896
- GCVE · GCVE-0-2023-4001
Affected configurations (NVD CPE)
cpe:2.3:a:gnu:grub2:-:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 1:2.06-70.el9_3.2 < * |
| Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support | unaffected 1:2.06-27.el9_0.16 < * |
| Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 1:2.06-61.el9_2.2 < * |
| Red Hat · Red Hat Enterprise Linux 8 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |