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ALPINE-CVE-2026-19033

ALPINE-CVE-2026-19033

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.5 · Medium · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind Alpine:v3.22

    Affected ranges
    • ECOSYSTEM: < 9.20.29-r0

    Update to 9.20.29-r0

  • bind Alpine:v3.23

    Affected ranges
    • ECOSYSTEM: < 9.20.29-r0

    Update to 9.20.29-r0

  • bind Alpine:v3.24

    Affected ranges
    • ECOSYSTEM: < 9.20.29-r0

    Update to 9.20.29-r0

Original sources

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