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CVE-2021-4122

Date: August 24, 2022

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.

Severity Score

Related Resources (10)

https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes
https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c
https://access.redhat.com/security/cve/CVE-2021-4122
https://security.alpinelinux.org/vuln/CVE-2021-4122
https://bugzilla.redhat.com/show_bug.cgi?id=2032401
https://nvd.nist.gov/vuln/detail/CVE-2021-4122
https://security-tracker.debian.org/tracker/CVE-2021-4122
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-4122
https://bugzilla.redhat.com/show_bug.cgi?id=2031859
https://www.mend.io/vulnerability-database/CVE-2021-4122

Severity Score

Weakness Type (CWE)

Insufficient Verification of Data Authenticity

CWE-345

CVSS v3.1

Base Score:
Attack Vector (AV): PHYSICAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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