UBUNTU-CVE-2026-71193 (CVE-2026-71193)
Vulnerability from osv_ubuntu – Published: 2026-08-12 23:17 – Updated: 2026-08-19 11:09 – Source websiteIn OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an overlapping zone that conflicts with another tenant's zone. This enables cross-tenant DNS hijack (redirecting traffic to attacker-controlled IPs) and DNS denial of service (NODATA responses). Exploitation requires a multi-pool deployment with AttributeFilter enabled in scheduler_filters, which is a non-default but documented and supported configuration for self-service tiering.
{
"affected": [
{
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{
"binary_name": "designate-agent",
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},
{
"binary_name": "designate-api",
"binary_version": "1:2.1.0-0ubuntu1"
},
{
"binary_name": "designate-central",
"binary_version": "1:2.1.0-0ubuntu1"
},
{
"binary_name": "designate-common",
"binary_version": "1:2.1.0-0ubuntu1"
},
{
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"binary_version": "1:2.1.0-0ubuntu1"
},
{
"binary_name": "designate-pool-manager",
"binary_version": "1:2.1.0-0ubuntu1"
},
{
"binary_name": "designate-sink",
"binary_version": "1:2.1.0-0ubuntu1"
},
{
"binary_name": "designate-zone-manager",
"binary_version": "1:2.1.0-0ubuntu1"
},
{
"binary_name": "python-designate",
"binary_version": "1:2.1.0-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "designate",
"purl": "pkg:deb/ubuntu/designate@1:2.1.0-0ubuntu1?arch=source\u0026distro=xenial"
},
"ranges": [
{
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{
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}
],
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}
],
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"1:1.0.0-0ubuntu1",
"1:2.0.0~b1-0ubuntu1",
"1:2.0.0~b2-0ubuntu1",
"1:2.0.0~b2-0ubuntu2",
"1:2.0.0~b3-0ubuntu1",
"1:2.0.0~b3-0ubuntu2",
"1:2.0.0~rc1-0ubuntu1",
"1:2.0.0-0ubuntu1",
"1:2.1.0-0ubuntu1"
]
},
{
"ecosystem_specific": {
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{
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{
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{
"binary_name": "designate-api",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
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},
{
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"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "designate-mdns",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "designate-pool-manager",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "designate-producer",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "designate-sink",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "designate-worker",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "designate-zone-manager",
"binary_version": "1:6.0.1-0ubuntu1.2"
},
{
"binary_name": "python-designate",
"binary_version": "1:6.0.1-0ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "designate",
"purl": "pkg:deb/ubuntu/designate@1:6.0.1-0ubuntu1.2?arch=source\u0026distro=bionic"
},
"ranges": [
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"1:6.0.0~b1-0ubuntu2",
"1:6.0.0~b2-0ubuntu1",
"1:6.0.0~b3-0ubuntu1",
"1:6.0.0~rc1-0ubuntu1",
"1:6.0.0-0ubuntu1",
"1:6.0.1-0ubuntu1",
"1:6.0.1-0ubuntu1.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "designate",
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},
{
"binary_name": "designate-agent",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-api",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-central",
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},
{
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},
{
"binary_name": "designate-mdns",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-pool-manager",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-producer",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-sink",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-worker",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "designate-zone-manager",
"binary_version": "1:10.0.2-0ubuntu1"
},
{
"binary_name": "python3-designate",
"binary_version": "1:10.0.2-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "designate",
"purl": "pkg:deb/ubuntu/designate@1:10.0.2-0ubuntu1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:9.0.0-0ubuntu1",
"1:10.0.0~b1~git2019121610.cdac0fc2-0ubuntu1",
"1:10.0.0~b1~git2019121610.cdac0fc2-0ubuntu2",
"1:10.0.0~b2~git2020021416.8b5ec128-0ubuntu2",
"1:10.0.0~b3~git2020032414.dd359ba3-0ubuntu1",
"1:10.0.0~b3~git2020041012.9ed2623a-0ubuntu1",
"1:10.0.0-0ubuntu0.20.04.1",
"1:10.0.1-0ubuntu1",
"1:10.0.2-0ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "designate",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-agent",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-api",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-central",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-common",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-mdns",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-pool-manager",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-producer",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-sink",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-worker",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "designate-zone-manager",
"binary_version": "1:14.0.4-0ubuntu1"
},
{
"binary_name": "python3-designate",
"binary_version": "1:14.0.4-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "designate",
"purl": "pkg:deb/ubuntu/designate@1:14.0.4-0ubuntu1?arch=source\u0026distro=jammy"
},
"ranges": [
{
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"1:13.0.0+git2022011215.bff3d5f6-0ubuntu1",
"1:13.0.0+git2022030310.8ce022a7-0ubuntu1",
"1:14.0.0-0ubuntu1",
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"1:14.0.2-0ubuntu1",
"1:14.0.3-0ubuntu1",
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},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "designate",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-agent",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-api",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-central",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-common",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-mdns",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-pool-manager",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-producer",
"binary_version": "1:18.0.0-0ubuntu1"
},
{
"binary_name": "designate-sink",
"binary_version": "1:18.0.0-0ubuntu1"
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{
"binary_name": "designate-worker",
"binary_version": "1:18.0.0-0ubuntu1"
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{
"binary_name": "designate-zone-manager",
"binary_version": "1:18.0.0-0ubuntu1"
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{
"binary_name": "python3-designate",
"binary_version": "1:18.0.0-0ubuntu1"
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"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "designate",
"purl": "pkg:deb/ubuntu/designate@1:18.0.0-0ubuntu1?arch=source\u0026distro=noble"
},
"ranges": [
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],
"type": "ECOSYSTEM"
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],
"versions": [
"1:17.0.0-0ubuntu2",
"1:17.0.1+git2023121308.d90691f3-0ubuntu1",
"1:17.0.1+git2024011916.002005a4-0ubuntu2",
"1:18.0.0~rc1-0ubuntu1",
"1:18.0.0-0ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "designate",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-agent",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-api",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-central",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-common",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-mdns",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-pool-manager",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-producer",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-sink",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-worker",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "designate-zone-manager",
"binary_version": "1:22.0.0-0ubuntu2"
},
{
"binary_name": "python3-designate",
"binary_version": "1:22.0.0-0ubuntu2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "designate",
"purl": "pkg:deb/ubuntu/designate@1:22.0.0-0ubuntu2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:21.0.0-0ubuntu1",
"1:21.0.0-0ubuntu2",
"1:21.0.0+git20260121.19.145042f4-0ubuntu1",
"1:22.0.0~rc1-0ubuntu1",
"1:22.0.0-0ubuntu1",
"1:22.0.0-0ubuntu2"
]
}
],
"aliases": [],
"details": "In OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an overlapping zone that conflicts with another tenant\u0027s zone. This enables cross-tenant DNS hijack (redirecting traffic to attacker-controlled IPs) and DNS denial of service (NODATA responses). Exploitation requires a multi-pool deployment with AttributeFilter enabled in scheduler_filters, which is a non-default but documented and supported configuration for self-service tiering.",
"id": "UBUNTU-CVE-2026-71193",
"modified": "2026-08-19T11:09:40Z",
"published": "2026-08-12T23:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-71193"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-71193"
},
{
"type": "REPORT",
"url": "https://bugs.launchpad.net/designate/+bug/2160533"
},
{
"type": "REPORT",
"url": "https://security.openstack.org/ossa/OSSA-2026-034.html"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/2160533"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2026/08/11/6"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-71193"
]
}
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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