CVE-2023-48733

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Published: 14/02/2024 Updated: 15/02/2024

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

Hello, We have identified a vulnerability resulting from an insecure default configuration of OVMF/AAVMF and similar firmware as used in Ubuntu's edk2 package, the firmware used by LXD, and potentially other similar software Said EDK2 based firmwares implement UEFI Secure Boot functionality but also contain a copy of the UEFI Shell, this gives a ...

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 https://nvd.nist.gov https://seclists.org/oss-sec/2024/q1/133

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