CVE-2026-44690
CVE-2026-44690 · Cross-zone wildcard cache poisoning via RRSIG.labels manipulation
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198 aggressive NSEC processing leads to cache poisoning that permits a malicious actor controlling a single delegated zone to poison arbitrary sibling zones under NSEC-signed parent domains. A malicious actor with one registered domain under an NSEC-signed TLD can serve malicious insecure DNS responses for unrelated sibling domains (sharing the same parent zone). Arbitrary delegations that do not exist under the parent domain and are covered by the parent's NSEC chain can be brought into insecure existence by fraudulent wildcard DS records (less labels than expected, unknown algorithm) from the malicious sibling domain. This allows the malicious actor to inject insecure wildcard records for those delegations.
CVSS 7.5 · Alta · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
unbound
- Versiones
- ≥ 1.7.0, < 1.25.2: Afectada (semver)
Actualiza a 1.25.2
unbound Debian:12
- Versiones
- 1.17.1-2
- 1.17.1-2+deb12u1
- 1.17.1-2+deb12u2
- 1.17.1-2+deb12u3
- 1.17.1-2+deb12u4
- 1.17.1-2+loong64
- 1.18.0-1
- 1.18.0-2
- 1.19.1-1
- 1.19.2-1
- 1.20.0-1
- 1.21.1-1
- 1.22.0-1
- 1.22.0-2
- 1.23.1-1
- 1.24.0-1
- 1.24.0-2
- 1.24.1-1
- 1.24.1-2
- 1.24.2-1
- 1.25.0-1
- 1.25.1-1
- 1.25.2-1
- 1.26.0-1
- 1.26.0-2
- 1.26.1-1
- 1.26.2-1
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
unbound Debian:13
- Versiones
- 1.22.0-2
- 1.22.0-2+deb13u1
- 1.22.0-2+deb13u2
- 1.22.0-2+deb13u3
- 1.23.1-1
- 1.24.0-1
- 1.24.0-2
- 1.24.1-1
- 1.24.1-2
- 1.24.2-1
- 1.25.0-1
- 1.25.1-1
- 1.25.2-1
- 1.26.0-1
- 1.26.0-2
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.26.1-0+deb13u1
Actualiza a 1.26.1-0+deb13u1
unbound Debian:14
- Versiones
- 1.22.0-2
- 1.23.1-1
- 1.24.0-1
- 1.24.0-2
- 1.24.1-1
- 1.24.1-2
- 1.24.2-1
- 1.25.0-1
- 1.25.1-1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.25.2-1
Actualiza a 1.25.2-1
unbound Ubuntu:Pro:20.04:LTS
- Versiones
- 1.9.0-2ubuntu1
- 1.9.0-2ubuntu2
- 1.9.4-2
- 1.9.4-2ubuntu1
- 1.9.4-2ubuntu1.1
- 1.9.4-2ubuntu1.2
- 1.9.4-2ubuntu1.3
- 1.9.4-2ubuntu1.4
- 1.9.4-2ubuntu1.5
- 1.9.4-2ubuntu1.6
- 1.9.4-2ubuntu1.8
- 1.9.4-2ubuntu1.9
- 1.9.4-2ubuntu1.11
- 1.9.4-2ubuntu1.11+esm1
- 1.9.4-2ubuntu1.11+esm2
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.9.4-2ubuntu1.11+esm3
Actualiza a 1.9.4-2ubuntu1.11+esm3
unbound Ubuntu:22.04:LTS
- Versiones
- 1.13.1-1ubuntu1
- 1.13.1-1ubuntu3
- 1.13.1-1ubuntu5
- 1.13.1-1ubuntu5.1
- 1.13.1-1ubuntu5.2
- 1.13.1-1ubuntu5.3
- 1.13.1-1ubuntu5.4
- 1.13.1-1ubuntu5.5
- 1.13.1-1ubuntu5.7
- 1.13.1-1ubuntu5.8
- 1.13.1-1ubuntu5.10
- 1.13.1-1ubuntu5.11
- 1.13.1-1ubuntu5.12
- 1.13.1-1ubuntu5.13
- 1.13.1-1ubuntu5.14
- 1.13.1-1ubuntu5.15
- 1.13.1-1ubuntu5.16
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.13.1-1ubuntu5.17
Actualiza a 1.13.1-1ubuntu5.17
unbound Ubuntu:24.04:LTS
- Versiones
- 1.17.1-2
- 1.18.0-2ubuntu1
- 1.18.0-2ubuntu2
- 1.19.1-1ubuntu1
- 1.19.2-1ubuntu1
- 1.19.2-1ubuntu3
- 1.19.2-1ubuntu3.1
- 1.19.2-1ubuntu3.2
- 1.19.2-1ubuntu3.3
- 1.19.2-1ubuntu3.4
- 1.19.2-1ubuntu3.5
- 1.19.2-1ubuntu3.6
- 1.19.2-1ubuntu3.7
- 1.19.2-1ubuntu3.8
- 1.19.2-1ubuntu3.9
- 1.19.2-1ubuntu3.10
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.19.2-1ubuntu3.12
Actualiza a 1.19.2-1ubuntu3.12
unbound Ubuntu:26.10
- Versiones
- 1.24.2-1ubuntu2
- 1.25.1-1ubuntu1
- 1.25.1-1ubuntu3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
unbound Ubuntu:26.04:LTS
- Versiones
- 1.22.0-2ubuntu2
- 1.22.0-2ubuntu4
- 1.24.2-1ubuntu1
- 1.24.2-1ubuntu2
- 1.24.2-1ubuntu2.1
- 1.24.2-1ubuntu2.2
- 1.24.2-1ubuntu2.3
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.24.2-1ubuntu2.4
Actualiza a 1.24.2-1ubuntu2.4