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CVE-2026-42960

CVE-2026-42960 · Possible cache poisoning via promiscuous records for the authority section

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to poisoning via promiscuous records for the authority section. Promiscuous RRSets that complement DNS replies in the authority section can be used to trick Unbound to cache such records. If an adversary is able to attach such records in a reply (i.e., spoofed packet, fragmentation attack) he would be able to poison Unbound's cache. A malicious actor can exploit the possible poisonous effect by injecting RRSets other than NS that are also accompanied by address records in a reply, for example MX. This could be achieved by trying to spoof a reply packet or fragmentation attacks. Unbound would then accept the relative address records in the additional section and cache them if the authority RRSet has enough trust at this point, i.e., in-zone data for the delegation point. Unbound 1.25.1 contains a patch with a fix that disregards address records from the additional section if they are not explicitly relevant only to authority NS records, mitigating the possible poison effect. This is a complement fix to CVE-2025-11411.

CVSS 5.7 · Media · EPSS 0,3% · Corrección disponible

Publicación
Actualización

Pila tecnológica: system

Productos y versiones afectados

  • unbound

    Versiones
    • ≥ 0, < 1.25.1: Afectada (semver)

    Actualiza a 1.25.1

  • 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
    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
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.22.0-2+deb13u3

    Actualiza a 1.22.0-2+deb13u3

  • 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
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.25.1-1

    Actualiza a 1.25.1-1

  • unbound Ubuntu:Pro:14.04:LTS

    Versiones
    • 1.4.20-1
    • 1.4.21-1
    • 1.4.21-1ubuntu1
    • 1.4.21-1ubuntu2
    • 1.4.22-1ubuntu1
    • 1.4.22-1ubuntu2
    • 1.4.22-1ubuntu3
    • 1.4.22-1ubuntu4
    • 1.4.22-1ubuntu4.14.04.1
    • 1.4.22-1ubuntu4.14.04.2
    • 1.4.22-1ubuntu4.14.04.3
    • 1.4.22-1ubuntu4.14.04.3+esm1
    • 1.4.22-1ubuntu4.14.04.3+esm2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.4.22-1ubuntu4.14.04.3+esm3

    Actualiza a 1.4.22-1ubuntu4.14.04.3+esm3

  • unbound Ubuntu:Pro:16.04:LTS

    Versiones
    • 1.4.22-1ubuntu6
    • 1.5.7-1ubuntu1
    • 1.5.7-1ubuntu2
    • 1.5.8-1ubuntu1
    • 1.5.8-1ubuntu1.1
    • 1.5.8-1ubuntu1.1+esm1
    • 1.5.8-1ubuntu1.1+esm2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.8-1ubuntu1.1+esm3

    Actualiza a 1.5.8-1ubuntu1.1+esm3

  • unbound Ubuntu:Pro:18.04:LTS

    Versiones
    • 1.6.5-1
    • 1.6.7-1
    • 1.6.7-1build1
    • 1.6.7-1ubuntu1
    • 1.6.7-1ubuntu2
    • 1.6.7-1ubuntu2.1
    • 1.6.7-1ubuntu2.2
    • 1.6.7-1ubuntu2.3
    • 1.6.7-1ubuntu2.4
    • 1.6.7-1ubuntu2.5
    • 1.6.7-1ubuntu2.6
    • 1.6.7-1ubuntu2.6+esm2
    • 1.6.7-1ubuntu2.6+esm3
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.6.7-1ubuntu2.6+esm4

    Actualiza a 1.6.7-1ubuntu2.6+esm4

  • 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
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.9.4-2ubuntu1.11+esm1

    Actualiza a 1.9.4-2ubuntu1.11+esm1

  • 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
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.13.1-1ubuntu5.15

    Actualiza a 1.13.1-1ubuntu5.15

  • 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
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.19.2-1ubuntu3.8

    Actualiza a 1.19.2-1ubuntu3.8

  • unbound Ubuntu:25.10

    Versiones
    • 1.22.0-1ubuntu1
    • 1.22.0-2ubuntu1
    • 1.22.0-2ubuntu2
    • 1.22.0-2ubuntu2.1
    • 1.22.0-2ubuntu2.2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.22.0-2ubuntu2.3

    Actualiza a 1.22.0-2ubuntu2.3

  • unbound Ubuntu:26.04:LTS

    Versiones
    • 1.22.0-2ubuntu2
    • 1.22.0-2ubuntu4
    • 1.24.2-1ubuntu1
    • 1.24.2-1ubuntu2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.24.2-1ubuntu2.1

    Actualiza a 1.24.2-1ubuntu2.1

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