CVE-2023-48733 Information

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.

Reference

https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 https://nvd.nist.gov/vuln/detail/CVE-2023-48733 https://www.openwall.com/lists/oss-security/2024/02/14/4 https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139