Описание
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 7 | fwupd | Affected | ||
| Red Hat Enterprise Linux 7 | fwupdate | Affected | ||
| Red Hat Enterprise Linux 7 | shim | Not affected | ||
| Red Hat Enterprise Linux 7 | grub2 | Fixed | RHSA-2021:0699 | 02.03.2021 |
| Red Hat Enterprise Linux 7.2 Advanced Update Support | grub2 | Fixed | RHSA-2021:0704 | 02.03.2021 |
| Red Hat Enterprise Linux 7.3 Advanced Update Support | grub2 | Fixed | RHSA-2021:0703 | 02.03.2021 |
| Red Hat Enterprise Linux 7.4 Advanced Update Support | grub2 | Fixed | RHSA-2021:0702 | 02.03.2021 |
| Red Hat Enterprise Linux 7.4 Telco Extended Update Support | grub2 | Fixed | RHSA-2021:0702 | 02.03.2021 |
| Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions | grub2 | Fixed | RHSA-2021:0702 | 02.03.2021 |
| Red Hat Enterprise Linux 7.6 Extended Update Support | grub2 | Fixed | RHSA-2021:0701 | 02.03.2021 |
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Дополнительная информация
Статус:
7.5 High
CVSS3
Связанные уязвимости
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() ...
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.5 High
CVSS3