CVE-2022-3775
| Summary |
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.
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| Publication Date |
Dec. 20, 2022, 5:15 a.m. |
| Registration Date |
Dec. 20, 2022, 10 a.m. |
| Last Update |
Nov. 21, 2024, 4:20 p.m. |
|
CVSS3.1 : HIGH
|
| スコア |
7.1
|
| Vector |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| 攻撃元区分(AV) |
ローカル |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
低 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
なし |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
高 |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* |
|
2.06 |
|
|
| Configuration2 |
or higher |
or less |
more than |
less than |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
|
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|
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Related information, measures and tools
Common Vulnerabilities List