CVE-2023-48733

Published: Feb 14, 2024

Modified: May 8, 2025

PUBLISHED

CVSS v3.1

6.7

MEDIUM

Description

An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.

Vendor	Product	Versions
Canonical Ltd.	Ubuntu EDK II	affected `0 - < 2023.05-2ubuntu0.1`

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137

issue-tracking

https://nvd.nist.gov/vuln/detail/CVE-2023-48733

issue-tracking

https://www.openwall.com/lists/oss-security/2024/02/14/4

mailing-list

https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139

issue-tracking

https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html

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CVE-2023-48733

Description

Affected Products

CVSS v3.1 Details

References