Bug: Core dumps when forwarding over DoH

[Korving-F]

When using dns-over-https to pass the tunnel over HTTPS, core is typically dumped immediately after tunnel establishment but not always. Pings die immediately while commands on occasion return data. Encryption was turned on/off, different record types were attempted but all had the same result.

root@tunnelclient:~# ./dnscat2/client/dnscat --dns server=127.0.0.1,domain=example.com --secret=1234
Creating DNS driver:
 domain = example.com
 host   = 0.0.0.0
 port   = 53
 type   = TXT,CNAME,MX
 server = 127.0.0.1
Unrecoverable error in libs/buffer.c(699): Program read off the end of the buffer.

Aborted (core dumped)

[0x7D4]

How do I tunnel it over DoH? I've dnsdist and bind9 running on my client, and dnscat2 server is running on my VPS where my domain is hosted. How do I channel it through DoH?