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CVE-2023-4001

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2024-0468-03
Posted Jan 26, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-0468-03 - An update for grub2 is now available for Red Hat Enterprise Linux 9. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | CVE-2023-4001
SHA-256 | d7688836975def7a7a904a8dff1818935b2df13cd5fb4f7e3796a60864ca37d5
Download | Favorite | View
Red Hat Security Advisory 2024-0456-03
Posted Jan 26, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-0456-03 - An update for grub2 is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | CVE-2023-4001
SHA-256 | 8df03a50153d348b7a9523920f9931588088a0776e29e514ee69cf925bb4f6d7
Download | Favorite | View
Red Hat Security Advisory 2024-0437-03
Posted Jan 26, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-0437-03 - An update for grub2 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | CVE-2023-4001
SHA-256 | 2c7d4f88bc3ae2f7327d664bf227c12bc82d26a9316c79c18d8c8b96577d5e01
Download | Favorite | View
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