Advisory Weakness Curation

Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport) ### Impact Attacker sends many small, valid JSON messages in one TCP frame → handleData() recurses once per message; buffer shrinks each call → maxBufferSize is never reached; call stack overflows instead → A ~47 KB payload is sufficient to trigger RangeError ### Patches Fixed in `@nestjs/microservices@11.1.19` ### References Discovered by https://github.com/hwpark6804-gif

Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport) Attacker sends many small, valid JSON messages in one TCP frame → handleData() recurses once per message; buffer shrinks each call → maxBufferSize is never reached; call stack overflows instead → A ~47 KB payload is sufficient to trigger RangeError

Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport) Attacker sends many small, valid JSON messages in one TCP frame → handleData() recurses once per message; buffer shrinks each call → maxBufferSize is never reached; call stack overflows instead → A ~47 KB payload is sufficient to trigger RangeError