On 3/19/19 8:41 AM, Erik Winkels via Pdns-users wrote:
> Hi all,
>
> (Via: 
> https://blog.powerdns.com/2019/03/19/powerdns-authoritative-server-4-2-0-release-candidate-1-released/
>  )
>
> This release fixes an issue with security implications that has been recently 
> reported in the HTTP remote backend of the PowerDNS Authoritative Server. 
> Setups that are not using this backend are not impacted by this issue. More 
> information can be found in the corresponding security advisory:



Hi,

    Firstly, again, thank you for powerdns.

    I have been testing around with this and used it as an excuse to
create an ansible playbook for deployment. Along the way, it seems that
something is broken regarding superslave - my prior 4.1.8 servers all
respected and uses the superslave functionality but under 4.2.0rc1, that
appears to not work.

    On my hidden master I issue a notify. On the (super)slave, under
4.2.0rc1, I get this:

pdns_server[31701]: Received NOTIFY for somezone.com from <ipv4 of
hidden master>
pdns_server[31701]: Received NOTIFY for somezone.com from <ipv4 of
hidden master> for which we are not authoritative (Refused)

    Now, I remove 4.2.0 but leave the config files and the sqlite
database file as is, and then install 4.1.8. I initiate a notify from my
hidden master, and lo and behold:

Mar 29 15:20:05 offsite pdns_server[2177]: Received NOTIFY for
somezone.com from <ipv6 of hidden master>  for which we are not
authoritative
Mar 29 15:20:06 offsite pdns_server[2177]: Created new slave zone
'somezone.com from supermaster <ipv6 of hidden master>


      My pdns.conf file is:

allow-notify-from=<my hidden master>
cache-ttl=5
include-dir=/etc/powerdns/pdns.d
launch=
local-address=<slave ipv4>
local-ipv6=<slave ipv6>
local-ipv6-nonexist-fail=no
log-dns-details=no
log-dns-queries=no
master=no
query-local-address=<slave ipv4>
query-local-address6=<slave ipv6>
query-logging=yes
retrieval-threads=2
reuseport=yes
setgid=pdns
setuid=pdns
slave=yes


    Any ideas are welcome.


    Thank you.


Mike-

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