Описание
The inets application HTTP server httpd fails to enforce a configured body-size limit on chunked request.
This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.
A flaw was found in the inets application HTTP server httpd. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted chunked request that fails to enforce a configured body-size limit. This can lead to memory exhaustion, causing a Denial of Service (DoS) on the affected system.
Отчет
This is an Important denial of service vulnerability in the inets HTTP server, which is used in certain Red Hat products. A remote, unauthenticated attacker can exhaust system memory by sending a specially crafted chunked HTTP request. This occurs because the server fails to enforce configured max_body_size limits on incomplete chunked requests, leading to unbounded data buffering and resource exhaustion. The vulnerability primarily impacts deployments where max_body_size was explicitly configured for hardening.
Меры по смягчению последствий
To mitigate this issue, restrict network access to services utilizing the inets HTTP server to trusted clients and networks. Alternatively, deploy a reverse proxy in front of the inets HTTP server and configure it to enforce body size limits for incoming requests, preventing oversized chunked bodies from reaching the vulnerable server. If a service restart or reload is required for network configuration changes to take effect, ensure proper service management procedures are followed.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Cryostat 4 | cryostat/cryostat-storage-rhel9 | Affected | ||
| Red Hat Advanced Cluster Management for Kubernetes 2 | rhacm2/volsync-rhel9 | Affected | ||
| Red Hat OpenShift Dev Spaces | devspaces/traefik-rhel9 | Affected | ||
| Red Hat Hardened Images | erlang27-main-27.3.4.17-0.1.hum1 | Fixed | RHSA-2026:62531 | 02.09.2026 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
The inets application HTTP server httpd fails to enforce a configured body-size limit on chunked request. This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.
The inets application HTTP server httpd fails to enforce a configured body-size limit on chunked request. This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.
inets,httpd: Memory Exhaustion via Unenforced max_body_size During Chunked Body Reception
The inets application HTTP server httpd fails to enforce a configured ...
EPSS
7.5 High
CVSS3