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[email protected]CVE-2021-3981

HistoryMar 10, 2022 - 5:43 p.m.

CVE-2021-3981

2022-03-1017:43:14

CWE-276

[email protected]

web.nvd.nist.gov

154

grub2

cve-2021-3981

configuration file

permission set

encrypted passwords

nvd

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS3

3.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

3.5

Confidence

Low

EPSS

Percentile

15.5%

JSON

A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.

Affected configurations

Vulners

NVD

Node

gnugrub2Range≤2.06

VendorProductVersionCPE
gnugrub2*cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
gnu	grub2	*	cpe:2.3:a:gnu:grub2::::::::

CNA Affected

[
  {
    "product": "grub2",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "grub2 2.06 and previous versions"
      }
    ]
  }
]