Описание
Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate using client side certificates.
A flaw was found in redis. When parsing an incoming Redis Standard Protocol (RESP) request, redis allocates memory according to user-specified values, which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). This flaw allows an unauthenticated, remote user delivering specially crafted requests over multiple connections to cause the server to allocate a significant amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Меры по смягчению последствий
Prevent unauthenticated users from connecting to Redis by using network access control tools (e.g., firewalls) or enabling TLS and requiring users to authenticate using client side certificates.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat 3scale API Management Platform 2 | redis | Not affected | ||
| Red Hat Ansible Automation Platform 1.2 | redis | Not affected | ||
| Red Hat Ansible Tower 3 | redis | Not affected | ||
| Red Hat Enterprise Linux 9 | redis | Not affected | ||
| Red Hat Software Collections | rh-redis6-redis | Not affected | ||
| Red Hat Advanced Cluster Management for Kubernetes 2 | acm-must-gather-container | Fixed | RHSA-2021:3949 | 20.10.2021 |
| Red Hat Advanced Cluster Management for Kubernetes 2 | acmesolver-container | Fixed | RHSA-2021:3873 | 14.10.2021 |
| Red Hat Advanced Cluster Management for Kubernetes 2 | acm-must-gather-container | Fixed | RHSA-2021:3873 | 14.10.2021 |
| Red Hat Advanced Cluster Management for Kubernetes 2 | acm-operator-bundle-container | Fixed | RHSA-2021:3873 | 14.10.2021 |
| Red Hat Advanced Cluster Management for Kubernetes 2 | application-ui-container | Fixed | RHSA-2021:3873 | 14.10.2021 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate u...
Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate usin
Redis is an open source, in-memory database that persists on disk. Whe ...
Уязвимость сервера системы управления базами данных (СУБД) Redis, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3