CVE-2021-4122
cryptsetup - security update
4.3
MEDIUM
CVSS 3.1
EPSS 0.15%
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.
How to fix CVE-2021-4122
To remediate CVE-2021-4122, upgrade the affected package to a fixed version below.
- —upgrade to 2.3.7-r0 or later
- —upgrade to 2:2.3.7-1+deb11u1 or later
- —upgrade to 2:2.3.7-1+deb11u1 or later
Is CVE-2021-4122 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.3.7-r0
- from 0, < 2:2.3.7-1+deb11u1
- from 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 |