Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

st0ff3r
Posts: 13
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.

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

Re: Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

Postby st0ff3r » Mon Dec 28, 2020 7:41 am

Espressif, anyone having time to check it?

:)

ESP_Faye
Posts: 1642
Joined: Mon Oct 27, 2014 11:08 am

Re: Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

Postby ESP_Faye » Tue Dec 29, 2020 11:10 am

Hi,

So sorry that we missed this topic before. We have arranged an engineer to check with this issue. But due to the isolation caused by COVID-19, it may need some time to check and debug this issue. I will feedback to you as soon as there is any update. Sorry again for the inconvenience.

Thanks.

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

Re: Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

Postby st0ff3r » Tue Jan 05, 2021 9:07 am

Cool, thanks a lot :)

Her Mary
Posts: 472
Joined: Mon Oct 27, 2014 11:09 am

Re: Wrongly reacting to and sending 802.11 beacons with Channel Switch Announcement

Postby Her Mary » Fri Jan 15, 2021 4:10 pm

Does ESP8266 RTOS also have the same issue?

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