It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to use disproportionate resources processing the queries. Zones will usually need to have been deliberately crafted to attack this exposure. This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.32-S1.

ELSA-2025-1718: bind security update (IMPORTANT)

ELSA-2025-1681: bind security update (IMPORTANT)

ELSA-2025-1676: bind9.16 security update (IMPORTANT)

ELSA-2025-1675: bind security update (IMPORTANT)

Уязвимость сервера DNS BIND, связанная с асимметричным потреблением ресурсов, позволяющая нарушителю вызвать отказ в обслуживании