** Description changed: + NB! do not release this update to -updates, until slow phasing is + available, at 4% per day. + + NB! ideally phase one series at the time, to ensure we can deal with a + flood of support requests if any arise. + [Impact] * Ship 2020 dbxupdate from MS [Test Case] - * In case of multi-boot systems, please plan to boot into every + * In case of multi-boot systems, please plan to boot into every operating system on your multi-boot systems and install updates as soon as your other operating system distributions publish updates for BootHole vulnerability. * Install package on Secureboot UEFI enabled system * Reboot * Observe that it still reboots [Regression Potential] * Installing this package even once will update DBX variable in the UEFI firmware and will prevent booting: - All Ubuntu, Debian, RHEL, Fedora, OpenSUSE, SUSE, Oracle Linux milestones / media released before August 2020 - Certain version of Kaspersky Labs UEFI protect software - Certain version of HPE Inc ProLiant automatic OS provisioning As they are all vulnerable to the BootHole vunlerability. For example, one will have to use 16.04.7 LTS, 18.04.5 LTS, 20.04.1 LTS installer media if they want to reinstall. If any dual boot configurations are failing to boot, one must navigated to UEFI BIOS settings and either reset DBX variables to stock values, or disable secureboot. Upgrade any systems that are now prohibited to boot. And then re-enable secureboot & reinstall secureboot-db package to reapply dbx updates. Please note simple downgrade of secureboot-db package will not achieve anything, as downgrading the package does not revert the firmware changes. [Other Info] * For more inforamtion please see https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890835 Title: secureboot-db 2020 update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/secureboot-db/+bug/1890835/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
