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CVE-2022-2601

Date: December 14, 2022

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.

Language: C

Severity Score

Related Resources (8)

https://people.canonical.com/~ubuntu-security/cve/CVE-2022-2601
https://security-tracker.debian.org/tracker/CVE-2022-2601
https://access.redhat.com/security/cve/CVE-2022-2601
https://security.netapp.com/advisory/ntap-20230203-0004/
https://nvd.nist.gov/vuln/detail/CVE-2022-2601
https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
https://security.gentoo.org/glsa/202311-14
https://www.mend.io/vulnerability-database/CVE-2022-2601

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Heap-based Buffer Overflow

CWE-122

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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