IM
IronMonkey Threat Research

CVE-2021-4122 MEDIUM

Published: 2022-08-24 | Last Modified: 2024-11-21 | Status: Modified

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.

Additional Descriptions (1)

Se ha detectado que un encabezado LUKS especialmente diseñada podía engañar a cryptsetup para que deshabilitara el cifrado durante la recuperación del dispositivo. Un atacante con acceso físico al medio, como un disco flash, podría usar este fallo para forzar a un usuario a deshabilitar permanentemente la capa de cifrado de ese medio.

CVSS Metrics

Base Score: 4.3 (MEDIUM)

CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack VectorPHYSICAL
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactHIGH
Availability ImpactNONE

Source: [email protected]

Type: Primary

Exploitability Score: 0.7

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-345
[email protected] Primary
en CWE-345

Affected Products

Vendor Product Version Update Type
cryptsetup_project cryptsetup * <built-in method update of dict object at 0x7fd36b556380> Application
cryptsetup_project cryptsetup * <built-in method update of dict object at 0x7fd340145000> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:cryptsetup_project:cryptsetup:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:cryptsetup_project:cryptsetup:*:*:*:*:*:*:*:*

References