Lets assume you have these DNS-entries for
host = domain.tld type = SOA mname = dns.otherdomain.tld rname = hostmaster.otherdomain.tld host = domain.tld type = NS target = ns1.thirddomain.tld host = domain.tld type = NS target = ns2.thirddomain.tld
domain.tld there is no A-record, no AAAA-record and no CNAME-record, only the three records shown above.
This one is for
host = www.domain.tld type = CNAME target = site.otherdomain.tld
And there also is this one for
host = site.otherdomain.tld type = A ip = 192.168.123.234
Is it possible, that this combination is vulnerable? I ask, because there are browsers (like firefox) that behave different than other browsers:
When you use Google Chrome to call http://domain.tld/ you get a message that says, that the browser can't open this site.
Is this combination of DNS-entries safe?
btw: I found such a constellation in the wild. I have no idea, why it was made this way. I just wonder if such a constellation can rise any security risks.