VDB
ALPINE-CVE-2021-20233
ALPINE-CVE-2021-20233
PUBLISHED
CVSS 8.199999809265137 HIGH
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Risk Scores
CVSS 3.1
8.199999809265137
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.23 | grub | 0, 0, 2.04-r3 |
| Alpine:v3.22 | grub | 2.02-r18, 0, 0 |
| Alpine:v3.17 | grub | 0, 0, 2.04-r3 |
| Alpine:v3.20 | grub | 2.02-r10, 2.02-r1, 2.02-r10 |
| Alpine:v3.21 | grub | 0, 0, 0 |
| Alpine:v3.19 | grub | 2.02_beta3-r7, 0, 2.02-r0 |
| Alpine:v3.18 | grub | 2.04-r3, 0, 0 |
| Alpine:v3.24 | grub | 0, 0 |
Timeline
- Mar 3, 2021 CVE Published
- Apr 30, 2026 Distribution Patch
- Jun 15, 2026 CVE Updated