ALPINE-CVE-2025-5994
ALPINE-CVE-2025-5994
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A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that support EDNS Client Subnet (ECS). Unbound is also vulnerable when compiled with ECS support, i.e., '--enable-subnet', AND configured to send ECS information along with queries to upstream name servers, i.e., at least one of the 'send-client-subnet', 'client-subnet-zone' or 'client-subnet-always-forward' options is used. Resolvers supporting ECS need to segregate outgoing queries to accommodate for different outgoing ECS information. This re-opens up resolvers to a birthday paradox attack (Rebirthday Attack) that tries to match the DNS transaction ID in order to cache non-ECS poisonous replies.
CVSS 8.7 · Élevée · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
unbound Alpine:v3.19
- Plages de versions concernées
- ECOSYSTEM: < 1.20.0-r2
Mettez à jour vers 1.20.0-r2
unbound Alpine:v3.20
- Plages de versions concernées
- ECOSYSTEM: < 1.20.0-r2
Mettez à jour vers 1.20.0-r2
unbound Alpine:v3.21
- Plages de versions concernées
- ECOSYSTEM: < 1.22.0-r1
Mettez à jour vers 1.22.0-r1
unbound Alpine:v3.22
- Plages de versions concernées
- ECOSYSTEM: < 1.23.1-r0
Mettez à jour vers 1.23.1-r0
unbound Alpine:v3.23
- Plages de versions concernées
- ECOSYSTEM: < 1.23.1-r0
Mettez à jour vers 1.23.1-r0
unbound Alpine:v3.24
- Plages de versions concernées
- ECOSYSTEM: < 1.23.1-r0
Mettez à jour vers 1.23.1-r0