USN-7759-1

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Source
https://ubuntu.com/security/notices/USN-7759-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7759-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7759-1
Upstream
Related
Published
2025-09-21T23:51:11.317102Z
Modified
2025-10-13T07:32:04.675649Z
Summary
isc-kea vulnerabilities
Details

It was discovered that Kea DHCP did not correctly handle invalid hostnames. A remote attacker could possibly use this issue to cause a denial of service.

References

Affected packages

Ubuntu:Pro:16.04:LTS / isc-kea

Package

Name
isc-kea
Purl
pkg:deb/ubuntu/isc-kea@1.0.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.0-1ubuntu0.1~esm1

Affected versions

1.*

1.0.0-1
1.0.0-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.0.0-1ubuntu0.1~esm1",
            "binary_name": "kea-admin"
        },
        {
            "binary_version": "1.0.0-1ubuntu0.1~esm1",
            "binary_name": "kea-common"
        },
        {
            "binary_version": "1.0.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dev"
        },
        {
            "binary_version": "1.0.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dhcp-ddns-server"
        },
        {
            "binary_version": "1.0.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dhcp4-server"
        },
        {
            "binary_version": "1.0.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dhcp6-server"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2019-6473"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / isc-kea

Package

Name
isc-kea
Purl
pkg:deb/ubuntu/isc-kea@1.1.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.0-1ubuntu0.1~esm1

Affected versions

1.*

1.1.0-1
1.1.0-1build1
1.1.0-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.0-1ubuntu0.1~esm1",
            "binary_name": "kea-admin"
        },
        {
            "binary_version": "1.1.0-1ubuntu0.1~esm1",
            "binary_name": "kea-common"
        },
        {
            "binary_version": "1.1.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dev"
        },
        {
            "binary_version": "1.1.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dhcp-ddns-server"
        },
        {
            "binary_version": "1.1.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dhcp4-server"
        },
        {
            "binary_version": "1.1.0-1ubuntu0.1~esm1",
            "binary_name": "kea-dhcp6-server"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:18.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2019-6473"
        }
    ]
}