6.8
Medium
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…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 9.0 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9.2 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published |
References
- RHSA-2024:0437 access.redhat.com
- RHSA-2024:0456 access.redhat.com
- RHSA-2024:0468 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2224951 bugzilla.redhat.com
- dfir.ru dfir.ru
Timeline
- Published
- Last modified
Other CVEs of Red Hat Enterprise Linux 9
The 1864 CVEs of Red Hat Enterprise Linux 9 →
CVE-2026-123151
Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail
Not rated
CVE-2026-121997
Gdb: gdbserver: heap buffer overflow in cmd_qtdpsrc via qtdpsrc declared/actual length mismatch
8.1
High
CVE-2026-121996
Gdb: gdbserver: heap disclosure and wild pointer in gdb_parse_agent_expr via untrusted agent-expression length
8.2
High
CVE-2026-121995
Gdb: gdb: stack buffer overflow in parse_tracepoint_definition via stale rs->buf tail
7.5
High