[USN-4923-1] EDK II vulnerabilities

========================================================================== Ubuntu Security Notice USN-4923-1 April 20, 2021
edk2 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.10 – Ubuntu 20.04 LTS
Several security issues were fixed in EDK II.
Software Description: – edk2: UEFI firmware for virtual machines
Laszlo Ersek discovered that EDK II incorrectly handled recursion. A remote attacker could possibly use this issue to cause EDK II to consume resources, leading to a denial of service. (CVE-2021-28210)
Satoshi Tanda discovered that EDK II incorrectly handled decompressing certain images. A remote attacker could use this issue to cause EDK II to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-28211)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10: ovmf 2020.05-5ubuntu0.2 qemu-efi 2020.05-5ubuntu0.2 qemu-efi-aarch64 2020.05-5ubuntu0.2 qemu-efi-arm 2020.05-5ubuntu0.2
Ubuntu 20.04 LTS: ovmf 0~20191122.bd85bf54-2ubuntu3.2 qemu-efi 0~20191122.bd85bf54-2ubuntu3.2 qemu-efi-aarch64 0~20191122.bd85bf54-2ubuntu3.2 qemu-efi-arm 0~20191122.bd85bf54-2ubuntu3.2
After a standard system update you need to restart the virtual machines that use the affected firmware to make all the necessary changes.
References: ubuntu.com/security/notices/USN-4923-1 CVE-2021-28210, CVE-2021-28211
Package Information: launchpad.net/ubuntu/+source/edk2/2020.05-5ubuntu0.2 launchpad.net/ubuntu/+source/edk2/0~20191122.bd85bf54-2ubuntu3.2