CVE-2021-4122
MEDIUM4.3EPSS 0.10%cryptsetup - security update
Published: 8/24/2022Modified: 12/3/2025
Also known as:ALPINE-CVE-2021-4122
Description
It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.
Affected packages (3)
- Alpine/cryptsetupfrom 0, < 2.3.7-r0
- Debian/cryptsetupfrom 0, < 2:2.3.7-1+deb11u1
- Debian/cryptsetupfrom 0, < 2:2.3.7-1+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |