UBUNTU-CVE-2022-28735

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Source

https://ubuntu.com/security/CVE-2022-28735

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-28735.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2022-28735

Upstream

CVE-2022-28735

Downstream

USN-6355-1

Related

USN-6355-1

Published

2023-07-20T01:15:00Z

Modified

2025-07-16T08:27:59.138568Z

Severity

6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.

References

Affected packages

Ubuntu:Pro:14.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed@1.34.24?arch=source&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

Ubuntu:Pro:16.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed@1.167~16.04.6?arch=source&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

Ubuntu:Pro:16.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned@2.04-1ubuntu44.1.2?arch=source&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

Ubuntu:18.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed@1.187.3~18.04.1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.187.3~18.04.1

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

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "grub-efi-amd64-signed",
            "binary_version": "1.187.3~18.04.1+2.06-2ubuntu14.1"
        },
        {
            "binary_name": "grub-efi-arm64-signed",
            "binary_version": "1.187.3~18.04.1+2.06-2ubuntu14.1"
        }
    ]
}

Ubuntu:18.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.1?arch=source&distro=bionic

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

2.04-1ubuntu44.1

2.04-1ubuntu44.1.2

2.04-1ubuntu47.4

2.06-2ubuntu14

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "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",
            "binary_version": "2.06-2ubuntu14.1"
        }
    ]
}

Ubuntu:20.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed@1.187.3~20.04.1?arch=source&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",
    "binaries": [
        {
            "binary_name": "grub-efi-amd64-signed",
            "binary_version": "1.187.3~20.04.1+2.06-2ubuntu14.1"
        },
        {
            "binary_name": "grub-efi-arm64-signed",
            "binary_version": "1.187.3~20.04.1+2.06-2ubuntu14.1"
        }
    ]
}

Ubuntu:20.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.1?arch=source&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",
    "binaries": [
        {
            "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",
            "binary_version": "2.06-2ubuntu14.1"
        }
    ]
}

Ubuntu:22.04:LTS / grub2-signed

Package

Name: grub2-signed
Purl: pkg:deb/ubuntu/grub2-signed@1.187.3~22.04.1?arch=source&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",
    "binaries": [
        {
            "binary_name": "grub-efi-amd64-signed",
            "binary_version": "1.187.3~22.04.1+2.06-2ubuntu14.1"
        },
        {
            "binary_name": "grub-efi-arm64-signed",
            "binary_version": "1.187.3~22.04.1+2.06-2ubuntu14.1"
        }
    ]
}

Ubuntu:22.04:LTS / grub2-unsigned

Package

Name: grub2-unsigned
Purl: pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.1?arch=source&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",
    "binaries": [
        {
            "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",
            "binary_version": "2.06-2ubuntu14.1"
        }
    ]
}