CVE-2023-48733

MEDIUM EPSS 16.9%
Published Feb 14, 20242y ago · Modified Jun 17, 20262w ago
6.7 CVSS 3.1
Medium
Find Similar
Published Feb 14, 2024 2y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.7
Exploitability
0.8
Impact
5.9
Vector string
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

Threat Intelligence

EPSS Exploit Probability
16.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1188

Affected Products 5

VendorProductVersionRange
canonicallxd5.0any
canonicallxd5.21any
canonicallxd5.21any
tianocoreedk2* ≤2023.11-8
debiandebian_linux10.0any

References 5

  • bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
    Issue Tracking
  • bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
    Issue Tracking
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
    Mailing List
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2023-48733
    Third Party Advisory
  • openwall.com https://www.openwall.com/lists/oss-security/2024/02/14/4
    Mailing List

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.