Описание
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the max_line_size check in parts of an HTTP request in the C parser. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
A flaw was found in aiohttp, an asynchronous HTTP client/server framework for Python. A remote attacker can exploit this vulnerability by sending oversized lines within an HTTP request. This bypasses the max_line_size check in the C parser, causing the system to use an excessive amount of memory. This can lead to a Denial of Service (DoS) condition, making the affected system unavailable.
Отчет
This vulnerability is rated Moderate because an unauthenticated remote attacker can trigger denial of service against an affected aiohttp HTTP server that uses the default C-based parser, by sending HTTP requests with oversized fragmented lines that bypass max_line_size limits, causing excessive memory consumption. Exploitation requires aiohttp to be deployed as a network-facing HTTP server using the optimised C parser (the default in pre-built wheels). Many Red Hat products ship aiohttp as a bundled dependency for client libraries, internal automation, or services that do not expose this server/parser path to untrusted users. In those configurations, practical risk may be lower, but affected packages should still be updated to aiohttp 3.14.1 or later when fixes are released.
Меры по смягчению последствий
Update the aiohttp package to version 3.14.1 or later. Until updated builds are available, reduce exposure by not exposing aiohttp-based HTTP servers directly to untrusted networks. As a workaround, configure aiohttp to use the pure-Python HTTP parser by setting use_cparser=False when creating the application or running the server. This avoids the vulnerable C parser path. Installations that use aiohttp only as an HTTP client are not affected by this flaw.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Exploit Intelligence | exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 | Not affected | ||
| Migration Toolkit for Applications 8 | mta/mta-solution-server-rhel9 | Not affected | ||
| OpenShift Lightspeed | openshift-lightspeed/lightspeed-ocp-rag-rhel9 | Not affected | ||
| OpenShift Lightspeed | openshift-lightspeed/lightspeed-service-api-rhel9 | Not affected | ||
| OpenShift Lightspeed | openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 | Not affected | ||
| Red Hat AI Inference Server | rhaii/model-opt-cuda-rhel9 | Not affected | ||
| Red Hat AI Inference Server | rhaiis/model-opt-cuda-rhel9 | Not affected | ||
| Red Hat AI Inference Server | rhaiis/vllm-cpu-rhel9 | Not affected | ||
| Red Hat AI Inference Server | rhaiis/vllm-cuda-rhel9 | Not affected | ||
| Red Hat AI Inference Server | rhaiis/vllm-neuron-rhel9 | Not affected |
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Дополнительная информация
Статус:
EPSS
5.9 Medium
CVSS3
Связанные уязвимости
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the max_line_size check in parts of an HTTP request in the C parser. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the max_line_size check in parts of an HTTP request in the C parser. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
AIOHTTP is an asynchronous HTTP client/server framework for asyncio an ...
aiohttp: C HTTP Parser Bypasses max_line_size for Fragmented Lines
EPSS
5.9 Medium
CVSS3