CVE-2026-71193

{
  "id": "CVE-2026-71193",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-12T23:17:22.030",
  "lastModified": "2026-10-24T15:10:00.190",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "En OpenStack Designate antes de 22.0.1, las comprobaciones de creación de zonas (_is_subzone, _is_superzone, y la restricción de base de datos de zona duplicada) están limitadas solo al pool de destino. Un usuario autenticado puede eludir estas comprobaciones programando una zona a un pool diferente a través del planificador AttributeFilter, creando una zona superpuesta que entra en conflicto con la zona de otro inquilino. Esto permite el secuestro de DNS entre inquilinos (redirigiendo el tráfico a IPs controladas por el atacante) y la denegación de servicio de DNS (respuestas NODATA). La explotación requiere una implementación de múltiples pools con AttributeFilter habilitado en scheduler_filters, lo cual es una configuración no predeterminada pero documentada y soportada para la estratificación de autoservicio."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OpenStack",
          "product": "Designate",
          "defaultStatus": "unaffected",
          "repo": "https://opendev.org/openstack/designate",
          "versions": [
            {
              "version": "1.0.0",
              "lessThan": "20.0.2",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "21.0.0",
              "lessThan": "21.0.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "22.0.0",
              "lessThan": "22.0.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 5.8
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-13T13:33:33.269958Z",
          "id": "CVE-2026-71193",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://launchpad.net/bugs/2160533",
      "source": "[email protected]"
    },
    {
      "url": "https://security.openstack.org/ossa/OSSA-2026-034.html",
      "source": "[email protected]"
    },
    {
      "url": "https://www.openwall.com/lists/oss-security/2026/08/11/6",
      "source": "[email protected]"
    }
  ]
}