UBUNTU-CVE-2021-3981

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Source

https://ubuntu.com/security/CVE-2021-3981

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3981.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3981

Related

Published

2022-03-10T17:43:00Z

Modified

2024-12-18T16:42:56Z

Severity

3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator

Summary

[none]

Details

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.

References

Affected packages

Ubuntu:Pro:14.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed?arch=src?distro=esm-infra-legacy/trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.22

1.23

1.24

1.25

1.26

1.27

1.30

1.31

1.32

1.33

1.34

1.34.1

1.34.2

1.34.3

1.34.4

1.34.5

1.34.6

1.34.7

1.34.8

1.34.9

1.34.13

1.34.14

1.34.16

1.34.17

1.34.18

1.34.20

1.34.22

1.34.24

Ecosystem specific

{
    "ubuntu_priority": "low"
}

Ubuntu:Pro:16.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed?arch=src?distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.55

1.56

1.57

1.58

1.59

1.61

1.62

1.63

1.64

1.65

1.66

1.66.1

1.66.2

1.66.6

1.66.7

1.66.8

1.66.9

1.66.11

1.66.12

1.66.14

1.66.15

1.66.16

1.66.17

1.66.18

1.66.19

1.66.20

1.66.21

1.66.22

1.66.23

1.66.26

1.66.27

1.66.28

1.66.29

1.167~16.04.1

1.167~16.04.2

1.167~16.04.4

1.167~16.04.6

Ecosystem specific

{
    "ubuntu_priority": "low"
}

Ubuntu:Pro:16.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned?arch=src?distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.04-1ubuntu44

2.04-1ubuntu44.1

2.04-1ubuntu44.1.2

Ecosystem specific

{
    "ubuntu_priority": "low"
}

Ubuntu:Pro:18.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed?arch=src?distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.85

1.86

1.87

1.89

1.91

1.92

1.93

1.93.1

1.93.2

1.93.3

1.93.4

1.93.5

1.93.7

1.93.8

1.93.10

1.93.11

1.93.13

1.93.14

1.93.15

1.93.16

1.93.18

1.93.19

1.93.20

1.93.21

1.93.22

1.93.24

1.167~18.04.1

1.167~18.04.3

1.167~18.04.5

1.173.2~18.04.1

1.187.2~18.04.1

1.187.3~18.04.1

Ecosystem specific

{
    "ubuntu_priority": "low"
}

Ubuntu:Pro:18.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned?arch=src?distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.04-1ubuntu44

2.04-1ubuntu44.1

2.04-1ubuntu44.1.2

2.04-1ubuntu47.4

2.06-2ubuntu14

2.06-2ubuntu14.1

Ecosystem specific

{
    "ubuntu_priority": "low"
}

Ubuntu:20.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.187.3~20.04.1

Affected versions

1.*

1.128

1.129

1.130

1.131

1.133

1.134

1.135

1.136

1.137

1.138

1.139

1.140

1.141

1.142

1.142.1

1.142.3

1.142.4

1.142.5

1.142.6

1.142.8

1.142.9

1.142.10

1.142.11

1.167

1.167.2

1.173.2~20.04.1

1.173.4

1.187.2~20.04.2

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.187.3~20.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-signed"
        },
        {
            "binary_version": "1.187.3~20.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-signed"
        }
    ]
}

Ubuntu:20.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.06-2ubuntu14.1

Affected versions

2.*

2.04-1ubuntu44

2.04-1ubuntu44.2

2.04-1ubuntu47.4

2.04-1ubuntu47.5

2.06-2ubuntu14

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-dbg"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-dbg"
        }
    ]
}

Ubuntu:22.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed?arch=src?distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.187.3~22.04.1

Affected versions

1.*

1.173

1.174

1.176

1.177

1.178

1.179

1.180

1.182~22.04.1

1.187.2

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.187.3~22.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-signed"
        },
        {
            "binary_version": "1.187.3~22.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-signed"
        }
    ]
}

Ubuntu:22.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned?arch=src?distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.06-2ubuntu14.1

Affected versions

2.*

2.04-1ubuntu47

2.04-1ubuntu48

2.06-2ubuntu3

2.06-2ubuntu4

2.06-2ubuntu5

2.06-2ubuntu6

2.06-2ubuntu7

2.06-2ubuntu10

2.06-2ubuntu14

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-dbg"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-dbg"
        }
    ]
}