Incorrect default permissions in efi-shell-x64 (Ubuntu package) - CVE-2023-48733

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Main Vulnerability Database Vulnerabilities #VU95182

Incorrect default permissions in efi-shell-x64 (Ubuntu package) - CVE-2023-48733

Published: August 2, 2024


Vulnerability identifier: #VU95182
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-48733
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Canonical Ltd.
Affected software:
efi-shell-x64 (Ubuntu package)

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions on the UEFI Shell. A local user can bypass the Secure Boot and escalate privileges on the system.


How to mitigate CVE-2023-48733

Install updates from vendor's website.

Sources