ALPINE-CVE-2026-54478
ALPINE-CVE-2026-54478
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a 'proxy-protocol-port' interface with 'answer-cookie: yes', the RFC 9018 server-cookie SipHash is computed over the proxy's wire address instead of the PROXYv2-declared client. One server cookie obtained through a given proxy node therefore validates for every PROXYv2-declared source behind that node. On a UDP+proxy-protocol front, an off-path attacker can harvest one cookie with a single legitimate query, then replay it under any spoofed source and pass DNS Cookie checks that were deployed to defeat this in the first place.
CVSS 3.7 · Faible · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
unbound Alpine:v3.22
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.18.0, < 1.25.2-r0
Mettez à jour vers 1.25.2-r0
unbound Alpine:v3.23
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.18.0, < 1.25.2-r0
Mettez à jour vers 1.25.2-r0
unbound Alpine:v3.24
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.18.0, < 1.25.2-r0
Mettez à jour vers 1.25.2-r0