Описание
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
A use-after-free vulnerability was found on grub2's chainloader command. This flaw allows an attacker to gain access to restricted data or cause arbitrary code execution if they can establish control from grub's memory allocation pattern.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 7 | grub2 | Out of support scope | ||
| Red Hat Enterprise Linux 8 | grub2 | Fixed | RHSA-2022:5095 | 16.06.2022 |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | grub2 | Fixed | RHSA-2022:5098 | 16.06.2022 |
| Red Hat Enterprise Linux 8.2 Extended Update Support | grub2 | Fixed | RHSA-2022:5100 | 16.06.2022 |
| Red Hat Enterprise Linux 8.4 Extended Update Support | grub2 | Fixed | RHSA-2022:5096 | 16.06.2022 |
| Red Hat Enterprise Linux 9 | grub2 | Fixed | RHSA-2022:5099 | 16.06.2022 |
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Дополнительная информация
Статус:
EPSS
7 High
CVSS3
Связанные уязвимости
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
There's a use-after-free vulnerability in grub_cmd_chainloader() funct ...
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
EPSS
7 High
CVSS3