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High 7.4
NATS credentials are exposed in monitoring port via command-line argv
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, if a nats-server is run with static credentials for all clients provided via argv (the command-line), then those credentials …
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High 7.5
NATS has pre-auth server panic via leafnode handling
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, a client which can connect to the leafnode port can crash the nats-server with a certain malformed message pre-authentication…
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High 7.1
NATS allows MQTT clients to bypass ACL checks
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass …
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High 8.6
NATS has MQTT plaintext password disclosure
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, for MQTT deployments using usercodes/passwords: MQTT passwords are incorrectly classified as a non-authenticating identity st…
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High 7.5
NATS Server panic via malicious compression on leafnode port
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled (not default), then anyone who can connect can crash the nats-ser…
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High 7.5
NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. T…
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High 7.5
xkeys Seal encryption used fixed key for all encryption
NATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing. The cryptographic key handling library, nkeys, recently gained support for encryption, not just for signing/authe…
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High —
NATS.io: Adding accounts for just the system account adds auth bypass
NATS nats-server before 2.9.23 and 2.10.x before 2.10.2 has an authentication bypass. An implicit $G user in an authorization block can sometimes be used for unauthenticated access, even when the intention of the configuration was for each user to have an acc…
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High 8.8
Incorrect Authorization in NATS nats-server
NATS nats-server before 2.7.2 has Incorrect Access Control. Any authenticated user can obtain the privileges of the System account by misusing the "dynamically provisioned sandbox accounts" feature.
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High 7.5
Import loops in account imports, nats-server DoS
(This advisory is canonically <https://advisories.nats.io/CVE/CVE-2020-28466.txt>) ## Problem Description An export/import cycle between accounts could crash the nats-server, after consuming CPU and memory. This issue was fixed publicly in <https://github.com…
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High 7.5
nats-io/jwt not enforcing checking of Import token permissions
NATS Server 2.x before 2.2.0 and JWT library before 2.0.1 have Incorrect Access Control because Import Token bindings are mishandled.
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High 7.5
Denial of Service (DoS)
This affects all versions of package github.com/nats-io/nats-server/server. Untrusted accounts are able to crash the server using configs that represent a service export/import cycles. Disclaimer from the maintainers: Running a NATS service which is exposed t…
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High 7.5
Nil dereference in NATS JWT, DoS of nats-server
The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a nil dereference in Go code).
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High 7.5
Integer Overflow or Wraparound in NATS Server
An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.