{"id":"UBUNTU-CVE-2026-71193","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'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.","modified":"2026-10-01T19:12:53.335074208Z","published":"2026-08-12T23:17:00Z","related":["USN-8860-1"],"upstream":["CVE-2026-71193"],"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"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8860-1"}],"affected":[{"package":{"name":"designate","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/designate?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.1.0-0ubuntu1+esm1"}]}],"versions":["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":{"binaries":[{"binary_version":"1:2.1.0-0ubuntu1+esm1","binary_name":"designate"},{"binary_version":"1:2.1.0-0ubuntu1+esm1","binary_name":"designate-agent"},{"binary_name":"designate-api","binary_version":"1:2.1.0-0ubuntu1+esm1"},{"binary_version":"1:2.1.0-0ubuntu1+esm1","binary_name":"designate-central"},{"binary_name":"designate-common","binary_version":"1:2.1.0-0ubuntu1+esm1"},{"binary_name":"designate-mdns","binary_version":"1:2.1.0-0ubuntu1+esm1"},{"binary_name":"designate-pool-manager","binary_version":"1:2.1.0-0ubuntu1+esm1"},{"binary_version":"1:2.1.0-0ubuntu1+esm1","binary_name":"designate-sink"},{"binary_name":"designate-zone-manager","binary_version":"1:2.1.0-0ubuntu1+esm1"},{"binary_version":"1:2.1.0-0ubuntu1+esm1","binary_name":"python-designate"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71193.json"}},{"package":{"name":"designate","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/designate?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.0.1-0ubuntu1.2+esm1"}]}],"versions":["1:5.0.0-0ubuntu1","1:6.0.0~b1-0ubuntu1","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":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"designate","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"designate-agent","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"designate-api","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"designate-central","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"designate-common","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"designate-mdns","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_version":"1:6.0.1-0ubuntu1.2+esm1","binary_name":"designate-pool-manager"},{"binary_name":"designate-producer","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_version":"1:6.0.1-0ubuntu1.2+esm1","binary_name":"designate-sink"},{"binary_name":"designate-worker","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"designate-zone-manager","binary_version":"1:6.0.1-0ubuntu1.2+esm1"},{"binary_name":"python-designate","binary_version":"1:6.0.1-0ubuntu1.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71193.json"}},{"package":{"name":"designate","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/designate?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:10.0.2-0ubuntu1+esm1"}]}],"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":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"designate-agent","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"designate-api","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"designate-central","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"designate-common","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_version":"1:10.0.2-0ubuntu1+esm1","binary_name":"designate-mdns"},{"binary_name":"designate-pool-manager","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"designate-producer","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"designate-sink","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_version":"1:10.0.2-0ubuntu1+esm1","binary_name":"designate-worker"},{"binary_name":"designate-zone-manager","binary_version":"1:10.0.2-0ubuntu1+esm1"},{"binary_name":"python3-designate","binary_version":"1:10.0.2-0ubuntu1+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71193.json"}},{"package":{"name":"designate","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/designate?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:14.0.4-0ubuntu1.1"}]}],"versions":["1:13.0.0-0ubuntu1","1:13.0.0+git2021120810.aa798fc0-0ubuntu1","1:13.0.0+git2022011215.bff3d5f6-0ubuntu1","1:13.0.0+git2022030310.8ce022a7-0ubuntu1","1:14.0.0-0ubuntu1","1:14.0.1-0ubuntu1","1:14.0.2-0ubuntu1","1:14.0.3-0ubuntu1","1:14.0.4-0ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:14.0.4-0ubuntu1.1","binary_name":"designate"},{"binary_version":"1:14.0.4-0ubuntu1.1","binary_name":"designate-agent"},{"binary_version":"1:14.0.4-0ubuntu1.1","binary_name":"designate-api"},{"binary_name":"designate-central","binary_version":"1:14.0.4-0ubuntu1.1"},{"binary_version":"1:14.0.4-0ubuntu1.1","binary_name":"designate-common"},{"binary_name":"designate-mdns","binary_version":"1:14.0.4-0ubuntu1.1"},{"binary_version":"1:14.0.4-0ubuntu1.1","binary_name":"designate-pool-manager"},{"binary_name":"designate-producer","binary_version":"1:14.0.4-0ubuntu1.1"},{"binary_name":"designate-sink","binary_version":"1:14.0.4-0ubuntu1.1"},{"binary_name":"designate-worker","binary_version":"1:14.0.4-0ubuntu1.1"},{"binary_version":"1:14.0.4-0ubuntu1.1","binary_name":"designate-zone-manager"},{"binary_name":"python3-designate","binary_version":"1:14.0.4-0ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71193.json"}},{"package":{"name":"designate","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/designate?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:18.0.0-0ubuntu1.1"}]}],"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":{"availability":"No subscription required","binaries":[{"binary_name":"designate","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_name":"designate-agent","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_name":"designate-api","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_name":"designate-central","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_name":"designate-common","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_version":"1:18.0.0-0ubuntu1.1","binary_name":"designate-mdns"},{"binary_name":"designate-pool-manager","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_name":"designate-producer","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_version":"1:18.0.0-0ubuntu1.1","binary_name":"designate-sink"},{"binary_name":"designate-worker","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_name":"designate-zone-manager","binary_version":"1:18.0.0-0ubuntu1.1"},{"binary_version":"1:18.0.0-0ubuntu1.1","binary_name":"python3-designate"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71193.json"}},{"package":{"name":"designate","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/designate?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:22.0.0-0ubuntu2.1"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"designate","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_name":"designate-agent","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_version":"1:22.0.0-0ubuntu2.1","binary_name":"designate-api"},{"binary_name":"designate-central","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_version":"1:22.0.0-0ubuntu2.1","binary_name":"designate-common"},{"binary_name":"designate-mdns","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_version":"1:22.0.0-0ubuntu2.1","binary_name":"designate-pool-manager"},{"binary_version":"1:22.0.0-0ubuntu2.1","binary_name":"designate-producer"},{"binary_name":"designate-sink","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_name":"designate-worker","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_name":"designate-zone-manager","binary_version":"1:22.0.0-0ubuntu2.1"},{"binary_version":"1:22.0.0-0ubuntu2.1","binary_name":"python3-designate"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71193.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}