Описание
Redhat: CVE-2022-3775 grub2 - Heap based out-of-bounds write when rendering certain Unicode sequences
FAQ
Windows 11, version 24H2 is not generally available yet. Why are there updates for this version of Windows listed in the Security Updates table?
The new Copilot+ devices that are now publicly available come with Windows 11, version 24H2 installed. Customers with these devices need to know about any vulnerabilities that affect their machine and to install the updates if they are not receiving automatic updates. Note that the general availability date for Windows 11, version 24H2 is scheduled for later this year.
Why is this Redhat CVE included in the Security Update Guide?
The vulnerability assigned to this CVE is in Linux shim rhboot/shim, a bootloader designed to support Secure Boot on systems that are running Linux. It is being documented in the Security Update Guide to announce that the latest builds of Windows are no longer vulnerable to this security feature bypass using Linux shim. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.
Обновления
| Продукт | Статья | Обновление |
|---|---|---|
| Windows Server 2012 | ||
| Windows Server 2012 (Server Core installation) | ||
| Windows Server 2012 R2 | ||
| Windows Server 2012 R2 (Server Core installation) | ||
| Windows 10 for 32-bit Systems | ||
| Windows 10 for x64-based Systems | ||
| Windows Server 2016 | ||
| Windows 10 Version 1607 for 32-bit Systems | ||
| Windows 10 Version 1607 for x64-based Systems | ||
| Windows Server 2016 (Server Core installation) |
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Возможность эксплуатации
Publicly Disclosed
Exploited
Latest Software Release
DOS
EPSS
7.1 High
CVSS3
Связанные уязвимости
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
When rendering certain unicode sequences, grub2's font code doesn't pr ...
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
EPSS
7.1 High
CVSS3