RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations.
This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/rabbitmq/amqp091-go/commit/2e0a919b89f337dbf58db2bb34ab206da…
security-advisories@github.com
https://github.com/rabbitmq/amqp091-go/pull/353
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-xwwf-m8fg-p9q2
security-advisories@github.com