Description
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, an authenticated MQTT client could subscribe to the internal $MQTT.deliver.pubrel subject family, bypassing configured subscribe permissions and exposing MQTT QoS2 protocol metadata for sessions in the account. This issue is fixed in versions 2.14.3 and 2.12.12.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
nats-io nats-server
< 2.12.12affected>= 2.14.0-RC.1, < 2.14.3affected
References
- https://github.com/nats-io/nats-server/security/advisories/GHSA-4g68-3pwx-5vfj ↗
- https://github.com/nats-io/nats-server/commit/297b166be60fe13144084eed4b25201ead03204a ↗
- https://github.com/nats-io/nats-server/commit/34b09657bb596d5f850eaa5cfc97ea6b2f989a97 ↗
- https://github.com/nats-io/nats-server/releases/tag/v2.12.12 ↗
- https://github.com/nats-io/nats-server/releases/tag/v2.14.3 ↗