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CVE-2025-30192

CVE-2025-30192 · A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries. The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers. The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.

CVSS 7.5 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • recursor

    Versions
    • 5.0.12: Not affected (semver)
    • 5.1.6: Not affected (semver)
    • 5.2.4: Not affected (semver)

    No fix published

  • pdns-recursor Debian:12

    Versions
    • 4.8.4-1
    • 4.8.6-1
    • 4.8.7-1
    • 4.8.8-1
    • 4.8.8-1+deb12u1
    • 4.9.0-1
    • 4.9.0-2
    • 4.9.1-1
    • 4.9.1-2
    • 4.9.1-3
    • 4.9.1-4
    • 4.9.2-1
    • 4.9.2-2
    • 4.9.3-1
    • 4.9.4-1
    • 4.9.5-1
    • 5.0.5-1
    • 5.0.7-1
    • 5.0.7-2
    • 5.0.9-1
    • 5.1.3-1
    • 5.1.3-2
    • 5.2.0-1
    • 5.2.0-2
    • 5.2.0-3
    • 5.2.0-4
    • 5.2.0-5
    • 5.2.1-1
    • 5.2.2-1
    • 5.2.2-2
    • 5.2.4-1
    • 5.2.4-2
    • 5.2.5-1
    • 5.3.0-1
    • 5.3.0-2
    • 5.3.0-3
    • 5.3.0-4
    • 5.3.0-5
    • 5.3.1-1
    • 5.3.3-1
    • 5.3.4-1
    • 5.3.4-2
    • 5.3.5-1
    • 5.4.0-1
    • 5.4.1-1
    • 5.4.1-2
    • 5.4.2-1
    • 5.4.2-2
    • 5.4.3-1
    • 5.4.4-1
    • 5.4.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Debian:13

    Affected ranges
    • ECOSYSTEM: < 5.2.4-2

    Update to 5.2.4-2

  • pdns-recursor Debian:14

    Affected ranges
    • ECOSYSTEM: < 5.2.4-2

    Update to 5.2.4-2

  • pdns-recursor Ubuntu:Pro:16.04:LTS

    Versions
    • 3.7.3-1
    • 4.0.0~alpha1-1
    • 4.0.0~alpha1-2
    • 4.0.0~alpha2-2
    • 4.0.0~alpha2-2ubuntu0.1
    • 4.0.0~alpha2-2ubuntu0.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:Pro:18.04:LTS

    Versions
    • 4.0.6-1
    • 4.0.6-1build1
    • 4.0.7-1
    • 4.1.1-1
    • 4.1.1-1build1
    • 4.1.1-2
    • 4.1.1-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:Pro:20.04:LTS

    Versions
    • 4.2.0-6
    • 4.2.1-1
    • 4.2.1-1build1
    • 4.2.1-1build2
    • 4.2.1-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:Pro:22.04:LTS

    Versions
    • 4.4.2-3
    • 4.6.0-1ubuntu1
    • 4.6.0-1ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:24.04:LTS

    Versions
    • 4.9.0-2
    • 4.9.1-4
    • 4.9.2-1
    • 4.9.2-1build1
    • 4.9.2-2
    • 4.9.3-1
    • 4.9.3-1build2
    • 4.9.3-1build3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:25.10

    Versions
    • 5.2.0-5
    • 5.2.2-1
    • 5.2.2-2
    • 5.2.4-2
    • 5.2.4-2build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:26.10

    Versions
    • 5.3.5-1
    • 5.4.3-1
    • 5.4.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns-recursor Ubuntu:26.04:LTS

    Versions
    • 5.2.4-2build2
    • 5.3.1-1
    • 5.3.3-1
    • 5.3.4-1
    • 5.3.4-1build1
    • 5.3.4-2
    • 5.3.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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