Описание
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone.
Отчет
An attacker controlling any DNSSEC-signed zone can craft NSEC records that span into victim zones, enabling cross-zone cache poisoning with authenticated denial-of-service responses (AD=1).
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | bind | Affected | ||
| Red Hat Enterprise Linux 6 | bind | Affected | ||
| Red Hat Enterprise Linux 7 | bind | Affected | ||
| Red Hat Enterprise Linux 8 | bind | Affected | ||
| Red Hat Enterprise Linux 8 | bind9.16 | Affected | ||
| Red Hat Enterprise Linux 9 | bind | Affected | ||
| Red Hat Enterprise Linux 9 | bind9.18 | Affected | ||
| Red Hat Enterprise Linux 9 | dhcp | Not affected | ||
| Red Hat Hardened Images | bind | Affected | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Affected |
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Дополнительная информация
Статус:
EPSS
8.6 High
CVSS3
Связанные уязвимости
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
The BIND resolver accepts validly-signed NSEC records where the "Next ...
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
EPSS
8.6 High
CVSS3