Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support |
| devel | not-affected | does not affect Secure Boot |
| esm-infra-legacy/trusty | not-affected | does not affect Secure Boot |
| 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 |
| kinetic | not-affected | does not affect Secure Boot |
| lunar | not-affected | does not affect Secure Boot |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 1.187.3~18.04.1 |
| devel | not-affected | 1.193 |
| esm-infra-legacy/trusty | needs-triage | |
| esm-infra/bionic | not-affected | 1.187.3~18.04.1 |
| esm-infra/focal | not-affected | 1.187.3~20.04.1 |
| esm-infra/xenial | needs-triage | |
| focal | released | 1.187.3~20.04.1 |
| jammy | released | 1.187.3~22.04.1 |
| kinetic | ignored | end of life |
| lunar | not-affected | 1.192 |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 2.06-2ubuntu14.1 |
| devel | not-affected | 2.12~rc1-12ubuntu2 |
| esm-infra-legacy/trusty | DNE | |
| esm-infra/bionic | not-affected | 2.06-2ubuntu14.1 |
| esm-infra/focal | not-affected | 2.06-2ubuntu14 |
| esm-infra/xenial | needs-triage | |
| focal | released | 2.06-2ubuntu14 |
| jammy | released | 2.06-2ubuntu14 |
| kinetic | ignored | end of life |
| lunar | released | 2.06-2ubuntu15 |
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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.
Redhat: CVE-2022-3775 grub2 - Heap based out-of-bounds write when rendering certain Unicode sequences
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