UBUNTU-CVE-2018-14636 (CVE-2018-14636)
Vulnerability from osv_ubuntu – Published: 2018-09-10 19:29 – Updated: 2025-10-24 04:47 – Source website
VLAI
Details
Live-migrated instances are briefly able to inspect traffic for other instances on the same hypervisor. This brief window could be extended indefinitely if the instance's port is set administratively down prior to live-migration and kept down after the migration is complete. This is possible due to the Open vSwitch integration bridge being connected to the instance during migration. When connected to the integration bridge, all traffic for instances using the same Open vSwitch instance would potentially be visible to the migrated guest, as the required Open vSwitch VLAN filters are only applied post-migration. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3, 11.0.5 are vulnerable.
Severity
5.3 (Medium)
5.3 (Medium)
N/A (UNKNOWN)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-bgp-dragent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-common",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-linuxbridge-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-openvswitch-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-sriov-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-server",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "python-neutron",
"binary_version": "2:8.4.0-0ubuntu7.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:8.4.0-0ubuntu7.5?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:7.0.0-0ubuntu1",
"2:8.0.0~b1-0ubuntu2",
"2:8.0.0~b2-0ubuntu4",
"2:8.0.0~b2-0ubuntu5",
"2:8.0.0~b2-0ubuntu7",
"2:8.0.0~b3-0ubuntu1",
"2:8.0.0~rc1-0ubuntu1",
"2:8.0.0-0ubuntu1",
"2:8.1.0-0ubuntu0.16.04.2",
"2:8.1.2-0ubuntu1",
"2:8.2.0-0ubuntu1",
"2:8.3.0-0ubuntu1",
"2:8.3.0-0ubuntu1.1",
"2:8.3.0-0ubuntu1.2",
"2:8.4.0-0ubuntu1",
"2:8.4.0-0ubuntu2",
"2:8.4.0-0ubuntu3",
"2:8.4.0-0ubuntu4",
"2:8.4.0-0ubuntu5",
"2:8.4.0-0ubuntu6",
"2:8.4.0-0ubuntu7.1",
"2:8.4.0-0ubuntu7.2",
"2:8.4.0-0ubuntu7.3",
"2:8.4.0-0ubuntu7.4",
"2:8.4.0-0ubuntu7.5"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "neutron-common",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-plugin-linuxbridge-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-plugin-openvswitch-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-plugin-sriov-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-server",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:12.0.3-0ubuntu1"
},
{
"binary_name": "python-neutron",
"binary_version": "2:12.0.3-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:12.0.3-0ubuntu1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:12.0.3-0ubuntu1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:11.0.1-0ubuntu1",
"2:12.0.0~b1-0ubuntu1",
"2:12.0.0~b1-0ubuntu2",
"2:12.0.0~b2-0ubuntu1",
"2:12.0.0~b3-0ubuntu1",
"2:12.0.0~rc1-0ubuntu1",
"2:12.0.0~rc2-0ubuntu1",
"2:12.0.0-0ubuntu1",
"2:12.0.0-0ubuntu1.1",
"2:12.0.0-0ubuntu1.2",
"2:12.0.0-0ubuntu1.3",
"2:12.0.0-0ubuntu1.4",
"2:12.0.0-0ubuntu2",
"2:12.0.0-0ubuntu3",
"2:12.0.1-0ubuntu1",
"2:12.0.1-0ubuntu1.1",
"2:12.0.2-0ubuntu1"
]
}
],
"aliases": [],
"details": "Live-migrated instances are briefly able to inspect traffic for other instances on the same hypervisor. This brief window could be extended indefinitely if the instance\u0027s port is set administratively down prior to live-migration and kept down after the migration is complete. This is possible due to the Open vSwitch integration bridge being connected to the instance during migration. When connected to the integration bridge, all traffic for instances using the same Open vSwitch instance would potentially be visible to the migrated guest, as the required Open vSwitch VLAN filters are only applied post-migration. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3, 11.0.5 are vulnerable.",
"id": "UBUNTU-CVE-2018-14636",
"modified": "2025-10-24T04:47:10Z",
"published": "2018-09-10T19:29:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-14636"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-14636"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2018-14636"
]
}
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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.
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
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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
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