CVE-2024-2312

2024-04-0520:15:09

[email protected]

web.nvd.nist.gov

grub2

secure boot

use-after-free

debian

ubuntu

uefi

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

0.0004 Low

EPSS

Percentile

15.7%

JSON

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.

CNA Affected

[
  {
    "packageName": "grub2",
    "product": "Debian based GNU GRUB",
    "vendor": "Debian",
    "repo": "https://git.savannah.gnu.org/cgit/grub.git",
    "platforms": [
      "Linux"
    ],
    "versions": [
      {
        "lessThan": "2.12-1ubuntu5",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      }
    ]
  }
]