DPP Authentication Success Bug

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Hi,

In the current implementation of hostapd, it's possible for hostapd to get stuck in a loop when DPP Auth succeeds but it does not receive a DPP config request from the enrollee.

According to the logs, hostapd thinks it is still in the middle of a DPP Auth exchange, even though DPP Auth succeeded. 

><3>DPP-RX src=xx:xx:xx:xx:xx:xx freq=2412 type=0
><3>DPP-TX dst=xx:xx:xx:xx:xx:xx freq=2412 type=1
><3>DPP-TX-STATUS dst=xx:xx:xx:xx:xx:xx result=SUCCESS
><3>DPP-RX src=xx:xx:xx:xx:xx:xx freq=2412 type=2
><3>DPP-AUTH-SUCCESS init=0
><3>DPP-RX src=xx:xx:xx:xx:xx:xx freq=2412 type=0
><3>DPP-FAIL Already in DPP authentication exchange - ignore new one
><3>DPP-RX src=xx:xx:xx:xx:xx:xx freq=2412 type=0
><3>DPP-FAIL Already in DPP authentication exchange - ignore new one
><3>DPP-RX src=xx:xx:xx:xx:xx:xx freq=2412 type=0
><3>DPP-FAIL Already in DPP authentication exchange - ignore new one

On the enrollee I can see the DPP Config Request Timeout, and hostapd refuses to do DPP Auth again even after several minutes.

Has anyone else come across this bug? 

Thanks,

Wystan Schmidt 
Charter Communications

 

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