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, a WebSocket listener could route requests for the MQTT-over-WebSocket path into MQTT handling even when MQTT was not configured, allowing an unauthenticated client with access to the WebSocket listener to reach uninitialized MQTT state and crash the server process. This issue is fixed in versions 2.14.3 and 2.12.12.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Linuxfoundation Nats-Server
cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
|
2.12.0
|
2.12.12
|
|
Linuxfoundation Nats-Server
cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
|
2.14.0
|
2.14.3
|
References 5
https://github.com/nats-io/nats-server/commit/73b3dd9a5ea0fa7bf08b702338676355b…
security-advisories@github.com
https://github.com/nats-io/nats-server/commit/837536b98b3a9280b993282155ff2bdd3…
security-advisories@github.com
https://github.com/nats-io/nats-server/releases/tag/v2.12.12
security-advisories@github.com
https://github.com/nats-io/nats-server/releases/tag/v2.14.3
security-advisories@github.com
https://github.com/nats-io/nats-server/security/advisories/GHSA-p957-7v2w-g93g
security-advisories@github.com