Описание
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources.
This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
A flaw was found in BIND resolvers. A remote attacker could exploit this vulnerability by sending a query to a specially crafted zone. This would cause the resolver to consume disproportionate resources, leading to a denial of service (DoS) due to resource exhaustion.
Отчет
Moderate: This vulnerability in BIND resolvers allows for an amplified resource consumption attack. A specially crafted DNS zone can cause a Red Hat system acting as a resolver to consume excessive resources, potentially leading to a denial of service.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | bind | Affected | ||
| Red Hat Enterprise Linux 6 | bind | Fix deferred | ||
| Red Hat Enterprise Linux 7 | bind | Fix deferred | ||
| Red Hat Enterprise Linux 8 | bind | Fix deferred | ||
| Red Hat Enterprise Linux 8 | bind9.16 | Fix deferred | ||
| Red Hat Enterprise Linux 9 | bind | Affected | ||
| Red Hat Enterprise Linux 9 | bind9.18 | Affected | ||
| Red Hat Enterprise Linux 9 | dhcp | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Fix deferred | ||
| Red Hat Hardened Images | bind-main-9.18.49-1.hum1 | Fixed | RHSA-2026:20334 | 21.05.2026 |
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Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
BIND resolvers are vulnerable to an amplified resource consumption/exh ...
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
EPSS
5.3 Medium
CVSS3