| Package | Affected versions | Patched versions |
|---|---|---|
| gateway bridge | < 4.0.11 | 4.0.11 |
| mqtt forwarder | < 4.2.1 | 4.2.1 |
The Kerlink firewall in ChirpStack chirpstack-mqtt-forwarder before 4.2.1 and chirpstack-gateway-bridge before 4.0.11 wrongly accepts certain TCP packets when a connection is not in the ESTABLISHED state.
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