vulnerability / NVI-00015035 / Revision 1
RabbitMQ Java client accepts broker frames larger than the negotiated AMQP frame_max
GitHub lists this reviewed advisory for com.rabbitmq:amqp-client. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
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01 / Meaning
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02 / Applicability
The affected context
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com.rabbitmq:amqp-client
source listed< 5.33.0
## Summary The max body size was enforced to patch CVE-2023-46120, but even though that limit still works, the frame size itself still exceeds the given max size. ## Root cause The Java client records the AMQP 0-9-1 `frame_max` negotiated during connection tuning, but the socket inbound frame reader continues to validate broker-controlled payload lengths against the much larger `maxInboundMessageBodySize` limit. A broker peer can therefore send a method frame whose payload is larger than the negotiated `frame_max`, have it allocated and decoded, and complete the connection handshake instead of being rejected as a protocol violation. *Reported by Team Atlanta.*
03 / Response
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- investigate
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04 / Limits
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05 / Provenance
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- GHSA-5xwg-cfvj-gff5 ↗
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- Revision 1 ·
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