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MEDIUM4.9

GHSA-9983-vrx2-fg9c

NATS JetStream has an authorization bypass through its Management API

Quick fix

GHSA-9983-vrx2-fg9c — github.com/nats-io/nats-server/v2: upgrade to the fixed version with the command below.

go get github.com/nats-io/nats-server/v2@v2.11.15

Details

### Background

NATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing.

The persistent storage feature, JetStream, has a management API which has many features, amongst which are backup and restore.

### Problem Description

Users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them.

### Affected Versions

Any version before v2.12.6 or v2.11.15

### Workarounds

If developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/nats-io/nats-server/v2
Introduced in: 0Fixed in: 2.11.15
Fixgo get github.com/nats-io/nats-server/v2@v2.11.15
Go/github.com/nats-io/nats-server/v2
Introduced in: 2.12.0-RC.1Fixed in: 2.12.6
Fixgo get github.com/nats-io/nats-server/v2@v2.12.6
Go/github.com/nats-io/nats-server
Introduced in: 0

No fixed version published yet for github.com/nats-io/nats-server (go modules). Pin to a known-safe version or switch to an alternative.

References