UBUNTU-CVE-2023-40550

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Source

https://ubuntu.com/security/CVE-2023-40550

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-40550.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-40550

Upstream

CVE-2023-40550

Published

2024-01-23T00:00:00Z

Modified

2025-09-08T16:56:29Z

Severity

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

Summary

[none]

Details

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.

References

Affected packages

Ubuntu:Pro:14.04:LTS / shim

Package

Name: shim
Purl: pkg:deb/ubuntu/shim@13-0ubuntu2?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.4-0ubuntu4

0.8-0ubuntu2

0.9+1474479173.6c180c6-1ubuntu1

Other

13-0ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim",
            "binary_version": "13-0ubuntu2"
        }
    ]
}

Ubuntu:Pro:14.04:LTS / shim-signed

Package

Name: shim-signed
Purl: pkg:deb/ubuntu/shim-signed@1.33.1~14.04.5?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3

1.4

1.5

1.6

1.9

1.17~14.04.1

1.18~14.04.1

1.19~14.04.1

1.32~14.04.2

1.33.1~14.04.2

1.33.1~14.04.3

1.33.1~14.04.4

1.33.1~14.04.5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim-signed",
            "binary_version": "1.33.1~14.04.5+13-0ubuntu2"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / shim

Package

Name: shim
Purl: pkg:deb/ubuntu/shim@15.4-0ubuntu7?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.8-0ubuntu2

0.9+1474479173.6c180c6-1ubuntu1

Other

13-0ubuntu2

15+1533136590.*

15+1533136590.3beb971-0ubuntu1

15+1552672080.*

15+1552672080.a4a1fbe-0ubuntu2

15.*

15.4-0ubuntu7

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim",
            "binary_version": "15.4-0ubuntu7"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / shim-signed

Package

Name: shim-signed
Purl: pkg:deb/ubuntu/shim-signed@1.33.1~16.04.10?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.11

1.12

1.17~16.04.1

1.18~16.04.1

1.19~16.04.1

1.27~16.04.1

1.28~16.04.1

1.32~16.04.1

1.33.1~16.04.1

1.33.1~16.04.2

1.33.1~16.04.3

1.33.1~16.04.4

1.33.1~16.04.5

1.33.1~16.04.6

1.33.1~16.04.10

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim-signed",
            "binary_version": "1.33.1~16.04.10+15.4-0ubuntu7"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / shim

Package

Name: shim
Purl: pkg:deb/ubuntu/shim@15.7-0ubuntu1?arch=source&distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.9+1474479173.6c180c6-1ubuntu1

Other

13-0ubuntu2

15+1533136590.*

15+1533136590.3beb971-0ubuntu1

15+1552672080.*

15+1552672080.a4a1fbe-0ubuntu2

15.*

15.4-0ubuntu7

15.4-0ubuntu9

15.7-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim",
            "binary_version": "15.7-0ubuntu1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / shim-signed

Package

Name: shim-signed
Purl: pkg:deb/ubuntu/shim-signed@1.37~18.04.13?arch=source&distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.32

1.33.1

1.34.4

1.34.5

1.34.6

1.34.7

1.34.8

1.34.9

1.34.9.1

1.34.9.2

1.37~18.04.1

1.37~18.04.2

1.37~18.04.3

1.37~18.04.6

1.37~18.04.8

1.37~18.04.10

1.37~18.04.11

1.37~18.04.13

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim-signed",
            "binary_version": "1.37~18.04.13+15.7-0ubuntu1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / shim

Package

Name: shim
Purl: pkg:deb/ubuntu/shim@15.8-0ubuntu1?arch=source&distro=esm-infra/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

15+1533136590.*

15+1533136590.3beb971-0ubuntu1

15+1552672080.*

15+1552672080.a4a1fbe-0ubuntu1

15+1552672080.a4a1fbe-0ubuntu2

15.*

15.4-0ubuntu7

15.4-0ubuntu9

15.7-0ubuntu1

15.8-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim",
            "binary_version": "15.8-0ubuntu1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / shim-signed

Package

Name: shim-signed
Purl: pkg:deb/ubuntu/shim-signed@1.41?arch=source&distro=esm-infra/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.39

1.40

1.40.3

1.40.4

1.40.6

1.40.7

1.40.9

1.40.10

1.41

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim-signed",
            "binary_version": "1.41+15+1552672080.a4a1fbe-0ubuntu1"
        }
    ]
}

Ubuntu:22.04:LTS / shim

Package

Name: shim
Purl: pkg:deb/ubuntu/shim@15.8-0ubuntu1?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

15.*

15.4-0ubuntu9

15.7-0ubuntu1

15.8-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim",
            "binary_version": "15.8-0ubuntu1"
        }
    ]
}

Ubuntu:22.04:LTS / shim-signed

Package

Name: shim-signed
Purl: pkg:deb/ubuntu/shim-signed@1.51.4?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.51

1.51.3

1.51.4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "shim-signed",
            "binary_version": "1.51.4+15.8-0ubuntu1"
        }
    ]
}

Ubuntu:24.04:LTS / shim

Package

Name: shim
Purl: pkg:deb/ubuntu/shim@15.8-0ubuntu1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

15.8-0ubuntu1

Affected versions

15.*

15.7-0ubuntu1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "shim",
            "binary_version": "15.8-0ubuntu1"
        }
    ]
}

Ubuntu:24.04:LTS / shim-signed

Package

Name: shim-signed
Purl: pkg:deb/ubuntu/shim-signed@1.58?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.58

Affected versions

1.*

1.56

1.57

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "shim-signed",
            "binary_version": "1.58+15.8-0ubuntu1"
        }
    ]
}