Affected: CleanStart: opentelemetry-collector-contrib

Security vulnerability affects the opentelemetry-collector-contrib package. RabbitMQ amqp091-go is a Go AMQP 0.

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.

Affected: Go: github.com/rabbitmq/amqp091-go

## Summary An information disclosure vulnerability exists in the AMQP client implementation's authentication handling configuration. Following a successful connection handshake, the `Connection.Config.SASL` field stores the `Authentication` implementation state used to establish the session.

For standard `PLAIN` authentication, this state utilizes the `PlainAuth` struct, which defines both `Username` and `Password` as publicly exported, plaintext string fields. Because this sensitive data is retained permanently in-memory within an exported field structure, any peripheral code, internal package, reflective logger, dependency, or automated debugging utility with access to the core `*Connection` object can read and expose the raw credentials.

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## Vulnerability Details

### Mechanism The vulnerability stems from the structural design of the configuration storage used during and after the AMQP handshake:

```go // auth.go:21-23 type PlainAuth struct { Username string Password string // exported plaintext } ```

When an application initializes a connection, the `PlainAuth` object is deeply nested inside the configuration structure (`Connection.Config`). Even after the handshake concludes and authentication is complete, this structure persists natively in-memory for the duration of the network connection's lifecycle.

Because `Password` is an exported string field, standard automated inspection mechanisms can read its value without restriction.

### Affected Code…

github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Denial of Service via AMQP frame size negotiation github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Connection configuration overwrite via unsanitized TLS path parameter injection github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Denial of Service via signed-to-unsigned integer casting github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Fields github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Denial of Service due to synchronous event channel blocking github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Denial of Service via unbounded body buffer allocation github.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Denial of Service via Malicious AMQP Field Length go.opentelemetry.io/otel/sdk/log: OpenTelemetry-Go: Denial of Service via attacker-driven log emission