CVE-2022-2601
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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.
Available Exploits
Related News
Long story short – the problem began after Microsoft’s August 2024 Patch updates, which included a mitigation for a known GRUB2 vulnerability (CVE-2022-2601). The flaw allowed malicious actors to bypass UEFI Secure Boot protections using a compromised GRUB2 b…
GitHub Security Advisories
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Advisory Details
CVSS Scoring
CVSS Score
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
Advisory provided by GitHub Security Advisory Database. Published: December 14, 2022, Modified: December 16, 2022