RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, PlainAuth values defined in auth.go retain passwords as exported plaintext fields in Connection.Config.SASL after a successful PLAIN authentication handshake. The Connection.openComplete method in connection.go does not clear those values.
Code with access to the Connection object, including reflective loggers, application performance monitoring agents, debugging utilities, and panic handlers, can traverse the configuration and expose the credentials to logs or state captures. The credential remains available for the lifetime of the connection instead of being cleared after authentication. This issue is fixed in version 1.13.0.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/rabbitmq/amqp091-go/commit/fa013b8447eb60988db3c9281ff6b981e…
security-advisories@github.com
https://github.com/rabbitmq/amqp091-go/pull/350
security-advisories@github.com
https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0
security-advisories@github.com
https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-27gv-rfvv-22mv
security-advisories@github.com