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9.6 Critical

CVE-2026-71193 In OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB…

Description

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.

Affected products and versions

Product Affected versions Fixed in
Designate 22.0 22.0.0 → < 22.0.1 22.0.1
Designate 21.0 21.0.0 → < 21.0.1 21.0.1
Designate 1.0 1.0.0 → < 20.0.2 20.0.2

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Designate

The 2 CVEs of Designate →
CVE-2026-71194 In OpenStack Designate before 22.0.2, the mDNS handler performs pool-blind lookups when resolving record queries and… 6.8 Medium
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