Описание
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.
A flaw was found in the cryptography library. This vulnerability occurs because DNS (Domain Name System) name constraints were not properly validated against the "peer name" during certificate validation, only against Subject Alternative Names (SANs) within child certificates. This oversight could allow a malicious actor to bypass security restrictions, enabling a certificate for a specific domain to be validated against a broader wildcard certificate, even when an exclusion for that specific domain exists. This could lead to an attacker impersonating a legitimate server or service.
Отчет
Red Hat products and services do not employ certificate chains of the form required for this vulnerability. A Red Hat customer may construct such a certificate chain, however these would be non-default configurations.
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 |
|---|---|---|---|---|
| Lightspeed Core | lightspeed-core/lightspeed-stack-rhel9 | Fix deferred | ||
| Lightspeed Core | lightspeed-core/rag-tool-rhel9 | Fix deferred | ||
| OpenShift Lightspeed | openshift-lightspeed/lightspeed-ocp-rag-rhel9 | Fix deferred | ||
| OpenShift Lightspeed | openshift-lightspeed/lightspeed-service-api-rhel9 | Fix deferred | ||
| Pen Drive Powered by Red Hat Lightspeed | pen-drive/pen-drive-scanner-rhel9 | Fix deferred | ||
| Red Hat AI Inference Server | rhaiis-preview/vllm-cuda-rhel9 | Fix deferred | ||
| Red Hat AI Inference Server | rhaiis/vllm-cpu-rhel9 | Fix deferred | ||
| Red Hat AI Inference Server | rhaiis/vllm-cuda-rhel9 | Fix deferred | ||
| Red Hat AI Inference Server | rhaiis/vllm-rocm-rhel9 | Fix deferred | ||
| Red Hat AI Inference Server | rhaiis/vllm-tpu-rhel9 | Fix deferred |
Показывать по
Дополнительная информация
Статус:
EPSS
3.7 Low
CVSS3
Связанные уязвимости
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.
cryptography has incomplete DNS name constraint enforcement on peer names
cryptography is a package designed to expose cryptographic primitives ...
cryptography has incomplete DNS name constraint enforcement on peer names
EPSS
3.7 Low
CVSS3