Описание
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | |
| devel | not-affected | |
| esm-infra-legacy/trusty | not-affected | |
| esm-infra/bionic | not-affected | |
| esm-infra/focal | not-affected | |
| esm-infra/xenial | not-affected | |
| focal | not-affected | |
| groovy | not-affected | |
| hirsute | not-affected | |
| impish | not-affected |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | |
| devel | not-affected | |
| esm-infra-legacy/trusty | not-affected | |
| esm-infra/bionic | not-affected | |
| esm-infra/focal | not-affected | |
| esm-infra/xenial | not-affected | |
| focal | not-affected | |
| groovy | not-affected | |
| hirsute | not-affected | |
| impish | not-affected |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | |
| devel | not-affected | |
| esm-infra-legacy/trusty | DNE | trusty/esm was not-affected |
| esm-infra/bionic | not-affected | |
| esm-infra/focal | not-affected | |
| esm-infra/xenial | not-affected | |
| focal | not-affected | |
| groovy | not-affected | |
| hirsute | not-affected | |
| impish | not-affected |
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Ссылки на источники
4.4 Medium
CVSS2
6.4 Medium
CVSS3
Связанные уязвимости
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
If certificates that signed grub are installed into db, grub can be bo ...
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grbu2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
4.4 Medium
CVSS2
6.4 Medium
CVSS3