Bug 2224951 (CVE-2023-4001)
| Summary: | CVE-2023-4001 grub2: bypass the GRUB password protection feature | ||
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| Product: | [Other] Security Response | Reporter: | Sandipan Roy <saroy> |
| Component: | vulnerability | Assignee: | Nobody <nobody> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | jaredz, mlewando, nfrayer, pjanda, pjones, pkotvan, raravind, rharwood, security-response-team, trathi, tsorense |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
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.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2224953, 2224952, 2258096 | ||
| Bug Blocks: | 2224954 | ||
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Description
Sandipan Roy
2023-07-24 03:28:26 UTC
Created grub2 tracking bugs for this issue: Affects: fedora-all [bug 2258096] Please add to the doc text that users should remove the stub grub.cfg in their ESP: # rm /boot/efi/EFI/redhat/grub.cfg before they do the update, so that it is regenerated with the correct search flags during the update. This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Extended Update Support Via RHSA-2024:0437 https://access.redhat.com/errata/RHSA-2024:0437 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:0468 https://access.redhat.com/errata/RHSA-2024:0468 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2024:0456 https://access.redhat.com/errata/RHSA-2024:0456 |