Описание
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1, Atom exhaustion: OAuth2 JWT tag: scope values. extractscopes/1 parses scopes of the form .tag: and calls rabbitdatacoercion:toatom() to convert to a tag atom. The token signature is verified first, so the attacker cannot forge scopes , but in IdP configurations where scope content is user-influenced, each login with a novel tag value leaks one In deployments where users can influence the scopes included in their IdP-issued JWT rabbitmqauthbackendoauth2 enabled IdP permits attacker-influenced scope values in signed tokens. This issue is fixed in versions 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1.
A flaw was found in rabbitmq-server where its OAuth2 authentication backend improperly converts token scope values into Erlang runtime atoms. In deployments where an Identity Provider (IdP) allows users to influence scope contents within their signed JSON Web Tokens (JWTs), an authenticated attacker can supply unique scope tags across multiple authentications. This gradually depletes the broker's non-garbage-collected atom table, ultimately crashing the broker and causing a denial of service (DoS).
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Hardened Images | rabbitmq-server4.2 | Will not fix | ||
| Red Hat OpenStack Platform 13 (Queens) | rabbitmq-server | Out of support scope | ||
| Red Hat OpenStack Platform 16.2 | rabbitmq-server | Out of support scope | ||
| Red Hat OpenStack Platform 17.1 | rabbitmq-server | Out of support scope | ||
| Red Hat OpenStack Platform 18.0 | rabbitmq-server | Fix deferred | ||
| Red Hat Hardened Images | rabbitmq-server4-3-main-4.3.6-1.hum1 | Fixed | RHSA-2026:67552 | 15.09.2026 |
Показывать по
Ссылки на источники
Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1, Atom exhaustion: OAuth2 JWT tag: scope values. extractscopes/1 parses scopes of the form .tag: and calls rabbitdatacoercion:toatom() to convert to a tag atom. The token signature is verified first, so the attacker cannot forge scopes , but in IdP configurations where scope content is user-influenced, each login with a novel tag value leaks one In deployments where users can influence the scopes included in their IdP-issued JWT rabbitmqauthbackendoauth2 enabled IdP permits attacker-influenced scope values in signed tokens. This issue is fixed in versions 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1.
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1, Atom exhaustion: OAuth2 JWT tag: scope values. extractscopes/1 parses scopes of the form .tag: and calls rabbitdatacoercion:toatom() to convert to a tag atom. The token signature is verified first, so the attacker cannot forge scopes , but in IdP configurations where scope content is user-influenced, each login with a novel tag value leaks one In deployments where users can influence the scopes included in their IdP-issued JWT rabbitmqauthbackendoauth2 enabled IdP permits attacker-influenced scope values in signed tokens. This issue is fixed in versions 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1.
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.1 ...
EPSS
5.3 Medium
CVSS3