RabbitMQ is a messaging and streaming broker. Prior to versions 4.1.11, 4.2.6, and 4.3.0, validate_partitions only checks that the requested partition count is at least 1, with no upper bound. A large count such as lists:seq(0, 500000000) allocates roughly 8GB.
Preconditions include The rabbitmq_stream_management plugin must be enabled. The caller needs the management tag and access to the target vhost.. This issue is fixed in versions 4.1.11, 4.2.6, and 4.3.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
High
Admin 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)
Vulnerable Products
rabbitmq:rabbitmq-server
References 3
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
security-advisories@github.com
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.0
security-advisories@github.com
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-wg79-5449-…
security-advisories@github.com