Описание
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | does not affect Secure Boot |
| esm-infra-legacy/trusty | ignored | update incompatible with kernel |
| esm-infra/bionic | not-affected | does not affect Secure Boot |
| esm-infra/focal | not-affected | does not affect Secure Boot |
| esm-infra/xenial | not-affected | does not affect Secure Boot |
| focal | not-affected | does not affect Secure Boot |
| jammy | not-affected | does not affect Secure Boot |
| noble | not-affected | does not affect Secure Boot |
| oracular | not-affected | does not affect Secure Boot |
| plucky | not-affected | does not affect Secure Boot |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| devel | needs-triage | |
| esm-infra-legacy/trusty | ignored | update incompatible with kernel |
| esm-infra/bionic | needs-triage | |
| esm-infra/focal | needs-triage | |
| esm-infra/xenial | needs-triage | |
| focal | ignored | end of standard support, was needs-triage |
| jammy | needs-triage | |
| noble | needs-triage | |
| oracular | ignored | end of life, was needs-triage |
| plucky | needs-triage |
Показывать по
| Релиз | Статус | Примечание |
|---|---|---|
| devel | needs-triage | |
| esm-infra/bionic | needs-triage | |
| esm-infra/focal | needs-triage | |
| esm-infra/xenial | needs-triage | |
| focal | ignored | end of standard support, was needs-triage |
| jammy | needs-triage | |
| noble | needs-triage | |
| oracular | ignored | end of life, was needs-triage |
| plucky | needs-triage | |
| upstream | needs-triage |
Показывать по
Ссылки на источники
EPSS
7.6 High
CVSS3
Связанные уязвимости
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
A flaw was found in grub2. During the network boot process, when tryin ...
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
EPSS
7.6 High
CVSS3