CVE-2021-4122

2022-08-2416:15:09

CWE-345

[email protected]

web.nvd.nist.gov

231

cve-2021-4122

luks

cryptsetup

encryption

security vulnerability

nvd

4.3 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

4.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

30.2%

JSON

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.

Affected configurations

Vulners

NVD

Node

cryptsetup_projectcryptsetupRange≤2.4.3

cryptsetup_projectcryptsetupRange≤2.3.7

VendorProductVersionCPE
cryptsetup_projectcryptsetup*cpe:2.3:a:cryptsetup_project:cryptsetup:*:*:*:*:*:*:*:*
cryptsetup_projectcryptsetup*cpe:2.3:a:cryptsetup_project:cryptsetup:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cryptsetup_project	cryptsetup	*	cpe:2.3:a:cryptsetup_project:cryptsetup::::::::
cryptsetup_project	cryptsetup	*	cpe:2.3:a:cryptsetup_project:cryptsetup::::::::

CNA Affected

[
  {
    "product": "cryptsetup",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in cryptsetup 2.4.3, cryptsetup 2.3.7"
      }
    ]
  }
]