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CVE-2025-30192
7.5 HIGH
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): HIGH
A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts
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.
Affected products
pdns-recursor
- ==5.2.4
- ==5.0.12
- ==5.1.6
Matching in nixpkgs
pkgs.pdns-recursor
Recursive DNS server
-
nixos-unstable -
- nixpkgs-unstable 5.2.5
Package maintainers
-
@rnhmjoj Michele Guerini Rocco <rnhmjoj@inventati.org>