GRUB2 Exit Issue Leads to Use-After-Free Condition and Potential Secure Boot Bypass
CVE-2024-2312
6.7MEDIUM
Summary
GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass.
Affected Version(s)
Debian based GNU GRUB < 2.12-1ubuntu5
CVSS V3.1
Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged
Timeline
Risk change from: null to: 6.7 - (MEDIUM)
Vulnerability published.
Collectors
NVD DatabaseMitre Database
Credit
Mate Kukri