CVE-2021-4122

medium

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.

References

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://bugzilla.redhat.com/show_bug.cgi?id=2031859

https://access.redhat.com/security/cve/CVE-2021-4122

Details

Source: Mitre, NVD

Published: 2022-08-24

Updated: 2022-08-29

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Severity: Medium