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Status published
Medium
CVE-2021-4122
It was found that a specially crafted LUKS header could...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2031859
- https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes
- https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c
- https://bugzilla.redhat.com/show_bug.cgi?id=2032401
- https://access.redhat.com/security/cve/CVE-2021-4122
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Affected Vendor
Affected Software
cryptsetup
Vulnerable Versions:
Fixed in cryptsetup 2.4.3, cryptsetup 2.3.7
Timeline
Official Publish:
August 24th, 2022
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N