Public bug reported:

Ubuntu Ubuntu 20.04.2 LTS
haproxy installed:  2.0.13-2ubuntu0.1

haproxy -vv :
Built with OpenSSL version : OpenSSL 1.1.1f  31 Mar 2020
Running on OpenSSL version : OpenSSL 1.1.1f  31 Mar 2020
OpenSSL library supports : TLSv1.0 TLSv1.1 TLSv1.2 TLSv1.3

in the haproxy config ssl-min-ver TLSv1.0/TLSv1.1 is not usable on
frontends. only TLS1.2 connectins will success. older versions (TLSv1 /
TLSv1.1) of tls cannot be used.

tests from client:
#openssl s_client -connect server:443 -tls1 - failes with 
CONNECTED(00000005)
140607678620096:error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert 
protocol version:../ssl/record/rec_layer_s3.c:1528:SSL alert number 70

with 1_2 it successes the ssl handshake:
#openssl s_client -connect server:443 -tls1_2

bugs with this version http://www.haproxy.org/bugs/bugs-2.0.13.html

possible solution:
update to min. 2.0.15
http://git.haproxy.org/?p=haproxy-2.0.git;a=commitdiff;h=6dbb9a1

** Affects: haproxy (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: haproxy tlsv1 tlsv11

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https://bugs.launchpad.net/bugs/1919450

Title:
  ssl-min-ver < TLs1.2 not usable

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