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CVE-2024-45777

Опубликовано: 18 фев. 2025
Источник: redhat
CVSS3: 6.7

Описание

A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.

Отчет

The Red Hat Product Security team has rated this vulnerability with a Moderate severity due to the high privileges required to exploit this flaw. Within regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-787: Out-of-bounds Write vulnerability and therefore downgrades the severity of this particular CVE from Moderate to Low. The platform enforces hardening guidelines to apply the most restrictive settings necessary for operational requirements. Baseline configurations and system controls ensure secure software settings, while least functionality reduces the attack surface by disabling unauthorized services and ports. The environment employs IPS/IDS and antimalware solutions to detect and prevent malicious code exploiting out-of-bounds write vulnerabilities, using mechanisms such as file integrity monitoring and patch management. Robust input validation and error handling ensure all user inputs are thoroughly validated, preventing instability, data exposure, or privilege escalation. Finally, the platform uses memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to strengthen resilience against out-of-bounds write exploits.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10grub2Fix deferred
Red Hat Enterprise Linux 7grub2Out of support scope
Red Hat Enterprise Linux 8grub2Out of support scope
Red Hat Enterprise Linux 9grub2Fix deferred
Red Hat OpenShift Container Platform 4rhcosFix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-787
https://bugzilla.redhat.com/show_bug.cgi?id=2346343grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write.

6.7 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.7
ubuntu
7 месяцев назад

A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.

CVSS3: 6.7
nvd
7 месяцев назад

A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.

CVSS3: 6.7
debian
7 месяцев назад

A flaw was found in grub2. The calculation of the translation buffer w ...

CVSS3: 6.7
github
7 месяцев назад

A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.

CVSS3: 7.8
fstec
7 месяцев назад

Уязвимость компонента gettext загрузчика операционных систем Grub2, позволяющая нарушителю выполнить произвольный код

6.7 Medium

CVSS3