ALPINE-CVE-2026-50243
ALPINE-CVE-2026-50243
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In NLnet Labs Unbound 1.6.2 up to and including 1.25.1, when Unbound is configured with the 'respip' module in front of the validator together with a 'response-ip' redirect rule or an RPZ file with an RPZ-IP trigger, the rewriting handler does not check the security status of the upstream answer and can instead rewrite a BOGUS A/AAAA answer to point to an operator's configured IP. If the validator finds an expired or otherwise invalid RRSIG on an answer whose A record falls within a 'response-ip'/RPZ configuration, the answer is still rewritten and given a hard coded security level of INSECURE. This results in the client receiving an INSECURE NOERROR reply rewritten by the operator's configured IP. A malicious actor can exploit the possible poisonous effect by spoofing a BOGUS A/AAAA answer that falls inside the operator's configured subnet rewrites. Such DNSSEC protected answers are then insecurely redirected to the operator's configured target.
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: ≥ 1.6.2, < 1.25.2-r0
Mettez à jour vers 1.25.2-r0
unbound Alpine:v3.23
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.6.2, < 1.25.2-r0
Mettez à jour vers 1.25.2-r0
unbound Alpine:v3.24
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.6.2, < 1.25.2-r0
Mettez à jour vers 1.25.2-r0