Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Required
Privileges Required
None
Attack Vector
Local
0

CVE-2022-2601

Disclosure Date: December 14, 2022
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
8.6 High
Impact Score:
6
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
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

General Information

Vendors

  • fedoraproject,
  • gnu,
  • redhat

Products

  • enterprise linux eus 9.0,
  • enterprise linux for power little endian eus 9.0,
  • enterprise linux server aus 8.2,
  • enterprise linux server for power little endian update services for sap solutions 8.1,
  • enterprise linux server for power little endian update services for sap solutions 8.2,
  • enterprise linux server for power little endian update services for sap solutions 9.0,
  • enterprise linux server tus 8.2,
  • enterprise linux server update services for sap solutions 8.1,
  • enterprise linux server update services for sap solutions 8.2,
  • enterprise linux server update services for sap solutions 9.0,
  • fedora 37,
  • grub2

Additional Info

Technical Analysis