Description
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.
Details
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| grub2-signed | — | 1.187.3~22.04.1 |
| grub2-unsigned | — | 2.06-2ubuntu14.1 |
References
Similar Threats
- Unknown UBUNTU-CVE-2024-45774
- Unknown UBUNTU-CVE-2024-45775
- Unknown UBUNTU-CVE-2024-45776
- Unknown UBUNTU-CVE-2024-45777
- Unknown UBUNTU-CVE-2024-45778
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