RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.recvContent in channel.go preallocates the message body slice with the uint64 ch.header.Size value supplied by an AMQP content header without capping the allocation to the negotiated Connection.Config.FrameSize value. A malicious or compromised broker can send an extreme declared body size and cause the Go runtime to attempt a correspondingly large allocation before body data is received.
The allocation can exhaust memory and terminate the client process. 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/91b65fa0096a99a580cf51a31b24028ff…
security-advisories@github.com
https://github.com/rabbitmq/amqp091-go/pull/346
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-r9c8-gcjp-xfwh
security-advisories@github.com