Comment 22 for bug 1501588

(In reply to Kevin Havener from comment #0)
> Description of problem: After updating to wpa_supplicant 2.4-3 on July 1,
> was unable to connect to my corporate wifi access point. Subsequent
> downgrade to wpa_supplicant 2.3-3 fixed access problem, so I think this is a
> wpa_supplicant bug
>
>
> Version-Release number of selected component (if applicable): wpa_supplicant
> 2.4-3
>
>
> How reproducible: Upgrade to 2.4-3 try to access wpa/wpa2 wifi with TTLS
> authentication that has been working for well over a year now. Fails.
> Downgrade to 2.3-3 and it works again.

This appears to be an OpenSSL issue, not a wpa_supplicant one:

SSL: SSL3 alert: write (local SSL3 detected an error):fatal:handshake failure
OpenSSL: openssl_handshake - SSL_connect error:14082174:SSL routines:SSL3_CHECK_CERT_AND_ALGORITHM:dh key too small
wlp12s0: CTRL-EVENT-EAP-FAILURE EAP authentication failed

for exmaple, see:

https://bbs.archlinux.org/viewtopic.php?id=198796
http://alicevixie.blogspot.com/2015/06/dh-key-too-small.html