Описание
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments.
This issue affects BIND 9 versions 9.0.0 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, 9.9.3-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. A remote attacker can exploit this vulnerability by sending maliciously-constructed packets to BIND servers configured for TKEY-based authentication via GSS-API (Generic Security Service Application Program Interface) tokens. This can lead to excessive memory consumption, resulting in a Denial of Service (DoS) for the affected server.
Отчет
Important: BIND servers configured for TKEY-based GSS-API authentication are vulnerable to memory exhaustion when processing maliciously-constructed packets. This can lead to a denial of service, specifically impacting Red Hat deployments integrated with Active Directory or Kerberos for DNS where this authentication method is enabled.
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. Example:
Reloading the named service may cause a brief interruption in DNS resolution.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | bind | Affected | ||
| Red Hat Enterprise Linux 7 | bind | Affected | ||
| Red Hat Enterprise Linux 9 | dhcp | Not affected | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Affected | ||
| Red Hat Enterprise Linux 10 | bind | Fixed | RHSA-2026:24338 | 08.06.2026 |
| Red Hat Enterprise Linux 8 | bind9.16 | Fixed | RHSA-2026:23360 | 04.06.2026 |
| Red Hat Enterprise Linux 8 | bind | Fixed | RHSA-2026:24339 | 08.06.2026 |
| Red Hat Enterprise Linux 8 | bind | Fixed | RHSA-2026:24339 | 08.06.2026 |
| Red Hat Enterprise Linux 9 | bind | Fixed | RHSA-2026:24367 | 08.06.2026 |
| Red Hat Enterprise Linux 9 | bind9.18 | Fixed | RHSA-2026:24368 | 08.06.2026 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 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, 9.9.3-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 servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 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, 9.9.3-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 9 server memory exhaustion during GSS-API TKEY negotiation
BIND servers that are configured to use TKEY-based authentication via ...
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 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, 9.9.3-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
7.5 High
CVSS3