Описание
efibootguard is a simple UEFI boot loader with support for safely switching between current and updated partition sets. Insufficient or missing validation and sanitization of input from untrustworthy bootloader environment files can cause crashes and probably also code injections into bg_setenv) or programs using libebgenv. This is triggered when the affected components try to modify a manipulated environment, in particular its user variables. Furthermore, bg_printenv may crash over invalid read accesses or report invalid results. Not affected by this issue is EFI Boot Guard's bootloader EFI binary. EFI Boot Guard release v0.15 contains required patches to sanitize and validate the bootloader environment prior to processing it in userspace. Its library and tools should be updated, so should programs statically linked against it. An update of the bootloader EFI executable is not required. The only way to prevent the issue with an unpatched EFI Boot Guard version is to avoid acc...
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | needs-triage | |
| esm-apps/noble | needs-triage | |
| esm-infra/focal | DNE | |
| focal | DNE | |
| jammy | DNE | |
| lunar | ignored | end of life, was needs-triage |
| mantic | ignored | end of life, was needs-triage |
| noble | needs-triage | |
| oracular | ignored | end of life, was needs-triage |
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Ссылки на источники
EPSS
6.1 Medium
CVSS3
Связанные уязвимости
efibootguard is a simple UEFI boot loader with support for safely switching between current and updated partition sets. Insufficient or missing validation and sanitization of input from untrustworthy bootloader environment files can cause crashes and probably also code injections into `bg_setenv`) or programs using `libebgenv`. This is triggered when the affected components try to modify a manipulated environment, in particular its user variables. Furthermore, `bg_printenv` may crash over invalid read accesses or report invalid results. Not affected by this issue is EFI Boot Guard's bootloader EFI binary. EFI Boot Guard release v0.15 contains required patches to sanitize and validate the bootloader environment prior to processing it in userspace. Its library and tools should be updated, so should programs statically linked against it. An update of the bootloader EFI executable is not required. The only way to prevent the issue with an unpatched EFI Boot Guard version is to avoid access
efibootguard is a simple UEFI boot loader with support for safely swit ...
Уязвимость функции bg_printenv UEFI-загрузчика EFI Boot Guard, позволяющая нарушителю выполнить произвольный код
EPSS
6.1 Medium
CVSS3