Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

st0ff3r
Posts: 11
Joined: Sun Sep 13, 2015 11:52 pm

Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

Postby st0ff3r » Thu Jun 04, 2020 7:42 am

ESP's appear to honour 802.11 beacons containing CSA even if they are not connected to the AP sending the beacon.

Here is a simple command that sends out beacons containing CSA's
https://github.com/nabovarme/beacon_spammer

I am using an esp8266 with non-os sdk latest from master git.

The app is here: https://github.com/nabovarme/MeterLogger it is running as an AP and periodically scanning for wireless networks.

This is a severe error in the 802.11 implementation. Both the sending of CSA's and reacting on them while scanning should not happen I guess.

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