USN-8403-1 (UBUNTU-CVE-2026-3608)
Vulnerability from osv_ubuntu – Published: 2026-06-08 14:28 – Updated: 2026-06-30 15:55 – Source website
VLAI
Summary
isc-kea vulnerability
Details
Ali Norouzi discovered that Kea DHCP did not properly handle maliciously crafted messages over configured API sockets and HA listeners. A remote attacker could possibly use this issue to cause Kea DHCP to crash, resulting in a denial of service.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-3608",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "kea",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "kea-admin",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "kea-common",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "kea-ctrl-agent",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "kea-dhcp-ddns-server",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "kea-dhcp4-server",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "kea-dhcp6-server",
"binary_version": "2.4.1-3ubuntu0.2"
},
{
"binary_name": "python3-kea-connector",
"binary_version": "2.4.1-3ubuntu0.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "isc-kea",
"purl": "pkg:deb/ubuntu/isc-kea@2.4.1-3ubuntu0.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.1-3ubuntu0.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.2.1-3",
"2.4.0-1",
"2.4.1-1",
"2.4.1-2build1",
"2.4.1-3build1",
"2.4.1-3build3",
"2.4.1-3build3.1",
"2.4.1-3ubuntu0.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-3608",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "kea",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "kea-admin",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "kea-common",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "kea-ctrl-agent",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "kea-dhcp-ddns-server",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "kea-dhcp4-server",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "kea-dhcp6-server",
"binary_version": "2.6.3-2ubuntu0.1"
},
{
"binary_name": "python3-kea-connector",
"binary_version": "2.6.3-2ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "isc-kea",
"purl": "pkg:deb/ubuntu/isc-kea@2.6.3-2ubuntu0.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.3-2ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.1-1",
"2.6.1-2",
"2.6.3-1",
"2.6.3-2"
]
}
],
"aliases": [],
"details": "Ali Norouzi discovered that Kea DHCP did not properly handle maliciously\ncrafted messages over configured API sockets and HA listeners. A remote\nattacker could possibly use this issue to cause Kea DHCP to crash,\nresulting in a denial of service.",
"id": "USN-8403-1",
"modified": "2026-06-30T15:55:21Z",
"published": "2026-06-08T14:28:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8403-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-3608"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "isc-kea vulnerability",
"upstream": [
"UBUNTU-CVE-2026-3608"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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