Improper Authentication Affecting github.com/nats-io/nats-server/v2/server package, versions >=2.2.0 <2.9.23 >=2.10.0 <2.10.2
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Test your applications- Snyk ID SNYK-GOLANG-GITHUBCOMNATSIONATSSERVERV2SERVER-6039778
- published 31 Oct 2023
- disclosed 30 Oct 2023
- credit Alex Herrington
Introduced: 30 Oct 2023
CVE-2023-47090 Open this link in a new tabHow to fix?
Upgrade github.com/nats-io/nats-server/v2/server to version 2.9.23, 2.10.2 or higher.
Overview
github.com/nats-io/nats-server/v2/server is an A simple, secure and performant communications system for digital systems, services and devices.
Affected versions of this package are vulnerable to Improper Authentication due to an implicit $G user in an authorization block. An attacker can gain unauthenticated access, even when the configuration was intended for each user to have an account.
Note: Without proper access permission users can't access sensitive data.
Workaround
In the "accounts" block, define a second non-system account and leave it empty.
accounts {
SYS: {
users: [
{ user: sysuser, password: makemeasandwich }
]
}
DUMMY: {} # for security, before 2.10.2
}
system_account: SYS