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CVE-2023-48733

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-6638-1
Posted Feb 15, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6638-1 - Marc Beatove discovered buffer overflows exit in EDK2. An attacker on the local network could potentially use this to impact availability or possibly cause remote code execution. It was discovered that a buffer overflows exists in EDK2's Network Package An attacker on the local network could potentially use these to impact availability or possibly cause remote code execution.

tags | advisory, remote, overflow, local, code execution
systems | linux, ubuntu
advisories | CVE-2022-36763, CVE-2022-36765, CVE-2023-45231, CVE-2023-45234, CVE-2023-45235, CVE-2023-48733
SHA-256 | cb517471393f2b25d84672292a8731ab62b9d85dbfaf6f8ff61eb3870a2e1cb5
Debian Security Advisory 5624-1
Posted Feb 15, 2024
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5624-1 - Mate Kukri discovered the Debian build of EDK2, a UEFI firmware implementation, used an insecure default configuration which could result in Secure Boot bypass via the UEFI shell.

tags | advisory, shell
systems | linux, debian
advisories | CVE-2023-48733
SHA-256 | edeab3ca9fb62395b5cb0f4a0f796af3d4f2e0bf05a3127e4d9d601b63ad671c
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