CVE-2025-40777
CVE-2025-40777 · A possible assertion failure when 'stale-answer-client-timeout' is set to '0'
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If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.
CVSS 7.5 · Élevée · EPSS 1,0% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
bind 9
- Versions du logiciel
- ≥ 9.20.0, ≤ 9.20.10: Concernée (custom)
- ≥ 9.21.0, ≤ 9.21.9: Concernée (custom)
- ≥ 9.20.9-S1, ≤ 9.20.10-S1: Concernée (custom)
- ≥ 9.18.0, ≤ 9.18.37: Non concernée (custom)
- ≥ 9.18.11-S1, ≤ 9.18.37-S1: Non concernée (custom)
Aucun correctif publié
bind9 Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 1:9.20.11-1
Mettez à jour vers 1:9.20.11-1
bind9 Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 1:9.20.11-1
Mettez à jour vers 1:9.20.11-1