========================================================================== Ubuntu Security Notice USN-6638-1 February 15, 2024
edk2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in EDK II. Software Description: - edk2: UEFI firmware for virtual machines Details: 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. (CVE-2022-36763, CVE-2022-36764, CVE-2022-36765) 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. (CVE-2023-45230, CVE-2023-45234, CVE-2023-45235) It was discovered that an out-of-bounds read exists in EDK2's Network Package An attacker on the local network could potentially use this to impact confidentiality. (CVE-2023-45231) It was discovered that infinite-loops exists in EDK2's Network Package An attacker on the local network could potentially use these to impact availability. (CVE-2023-45232, CVE-2023-45233) Mate Kukri discovered that an insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. An attacker could use this to bypass Secure Boot. (CVE-2023-48733) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: efi-shell-aa64 2023.05-2ubuntu0.1 efi-shell-arm 2023.05-2ubuntu0.1 efi-shell-x64 2023.05-2ubuntu0.1 ovmf 2023.05-2ubuntu0.1 qemu-efi-aarch64 2023.05-2ubuntu0.1 qemu-efi-arm 2023.05-2ubuntu0.1 Ubuntu 22.04 LTS: ovmf 2022.02-3ubuntu0.22.04.2 qemu-efi 2022.02-3ubuntu0.22.04.2 qemu-efi-aarch64 2022.02-3ubuntu0.22.04.2 qemu-efi-arm 2022.02-3ubuntu0.22.04.2 Ubuntu 20.04 LTS: ovmf 0~20191122.bd85bf54-2ubuntu3.5 qemu-efi 0~20191122.bd85bf54-2ubuntu3.5 qemu-efi-aarch64 0~20191122.bd85bf54-2ubuntu3.5 qemu-efi-arm 0~20191122.bd85bf54-2ubuntu3.5 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6638-1 CVE-2022-36763, CVE-2022-36764, CVE-2022-36765, CVE-2023-45230, CVE-2023-45231, CVE-2023-45232, CVE-2023-45233, CVE-2023-45234, CVE-2023-45235, CVE-2023-48733,https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 Package Information: https://launchpad.net/ubuntu/+source/edk2/2023.05-2ubuntu0.1 https://launchpad.net/ubuntu/+source/edk2/2022.02-3ubuntu0.22.04.2 https://launchpad.net/ubuntu/+source/edk2/0~20191122.bd85bf54-2ubuntu3.5
OpenPGP_0xD60B83C90513BD4F.asc
Description: OpenPGP public key
OpenPGP_signature.asc
Description: OpenPGP digital signature
