Severity: important
Package: munin-node
Version: 2.0.37-2

Dear maintainer,

I've upgraded my Debian Buster system to OpenSSL 1.1.1-1 (and
libnet-ssleay-perl 1.85-2). Now it's impossible to use paranoid TLS
setup at Munin-Node:

> tls paranoid
> tls_verify_certificate yes
> tls_private_key /etc/ssl/private/example_server.key
> tls_certificate /etc/ssl/certs/example_server.crt
> tls_ca_certificate /etc/ssl/certs/example_ca.crt
> tls_verify_depth 3

Log output:

> CONNECT TCP Peer: "[2001:db8::cafe]:45907" Local: "[2001:db8::beef]:4949"
> [ERROR] Could not enable TLS:  5147: 1 - error:1417C086:SSL 
> routines:tls_process_client_certificate:certificate verify failed
> ERROR: Could not establish TLS connection. Closing. at 
> /usr/share/perl5/Munin/Node/Server.pm line 299, <STDIN> line 1.

I've used the same setup before without any problems. Same config is
still active and working on other Jessie and Stretch systems.

However it's running fine in non-paranoid mode:

> tls enabled
> tls_verify_certificate no
> tls_private_key /etc/ssl/private/example_server.key
> tls_certificate /etc/ssl/certs/example_server.crt

Any ideas what's going wrong? Anything I could check?

btw: My Munin-Master is running at Debian Jessie.

-- 
With kind regards,
Christian Schrötter

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