CVE-2023-48733: Medium severity debian/edk2 vulnerability

Published Feb 14, 2024
·
Updated

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.

Affected Software

10 affected componentsFixes available
debian/edk2<=0~20181115.85588389-3+deb10u3, <=2020.11-2+deb11u1, <=2022.11-6
2020.11-2+deb11u22022.11-6+deb12u12024.02-2
ubuntu/edk2<0~20191122.
0~20191122.
ubuntu/edk2<2022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.2
ubuntu/edk2<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
ubuntu/edk2<2023.11-7
2023.11-7
Canonical LXD=5.0-candidate
Canonical LXD=5.21-candidate
Canonical LXD=5.21-edge
Tianocore edk2<=2023.11-8
Debian Debian Linux=10.0

Event History

Feb 14, 2024
CVE Published
via Ubuntu·12:00 AM
CVE Published
via MITRE·09:54 PM
Data Sourced
via MITRE·09:54 PM
DescriptionSeverity
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software
Mar 2, 2024
Data Sourced
via Launchpad·02:40 AM
Description

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2023-48733?

CVE-2023-48733 is considered a high severity vulnerability as it allows an OS-resident attacker to bypass Secure Boot.

2

How do I fix CVE-2023-48733?

To fix CVE-2023-48733, upgrade your edk2 package to the remedied versions specified for your distribution.

3

Which versions of edk2 are affected by CVE-2023-48733?

CVE-2023-48733 affects specific versions of the edk2 package in Debian and Ubuntu, including versions up to 2020.11-2+deb11u1 for Debian and 0~20191122 for Ubuntu Focal.

4

What systems are impacted by CVE-2023-48733?

CVE-2023-48733 impacts systems running vulnerable versions of the edk2 package in Ubuntu and Debian distributions.

5

Is there a workaround for CVE-2023-48733?

Currently, there are no effective workarounds for CVE-2023-48733 other than upgrading to the secure versions of the edk2 package.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203
CVE-2023-48733 - Medium severity debian/edk2 vulnerability - SecAlerts