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CVE-2026-19033 For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone…

Description

For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server. Although no TSIG signature ever arrives, `named` does not rollback to the pre-transfer state. To exploit the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Produits et versions touchés

Produit Versions touchées Corrigé en
BIND 9 9.21 9.21.0 → 9.21.25 Pas de correctif indiqué
BIND 9 9.20 9.20.0 → 9.20.27 Pas de correctif indiqué
BIND 9 9.11 9.11.0 → 9.18.50 Pas de correctif indiqué

Références

Chronologie

  1. Publiée
  2. Dernière modification

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