cve/2023/CVE-2023-48733.md

### [CVE-2023-48733](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-48733)
![](https://img.shields.io/static/v1?label=Product&message=Ubuntu%20EDK%20II&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%202023.05-2ubuntu0.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### 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.

### POC

#### Reference
- https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
- https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
- https://www.openwall.com/lists/oss-security/2024/02/14/4

#### Github
No PoCs found on GitHub currently.