Version
16.14.0
Platform
20.5.0 Darwin Kernel Version 20.5.0: Sat May 8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 x86_64
Subsystem
No response
What steps will reproduce the bug?
Perform a dns.lookup() against a domain that resolves to a CNAME containing a wildcard asterisk (*).
Domains pointing to CloudFlare seem to use this approach in particular.
Sample code (will try to find a domain that breaks that I can share publicly):
const dns = require('dns');
dns.setServers([ "8.8.8.8", "8.8.4.4" ]);
domain="test.tld";
dns.resolve(domain, function (error, addresses) {
console.log("Error: ", error); // null
console.log("DNS servers: ", dns.getServers()); // [ '8.8.8.8', '8.8.4.4' ]
console.log(domain + " resolves to: ", addresses); // [ '192.168.0.10' ]
});Using nslookup or dig does return an A record. Using a version of node <16.6.2 also works.
Probably related to this similar issue:
#39780
How often does it reproduce? Is there a required condition?
Can be reproduced every time.
What is the expected behavior?
dns.resolve() returns a successful result (A record addresses).
What do you see instead?
Error: Error: queryA EBADRESP test.tld
at QueryReqWrap.onresolve [as oncomplete] (node:dns:213:19) {
errno: undefined,
code: 'EBADRESP',
syscall: 'queryA',
hostname: 'test.tld'
}Additional information
Seems related to:
Version
16.14.0
Platform
20.5.0 Darwin Kernel Version 20.5.0: Sat May 8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 x86_64
Subsystem
No response
What steps will reproduce the bug?
Perform a
dns.lookup()against a domain that resolves to a CNAME containing a wildcard asterisk (*).Domains pointing to CloudFlare seem to use this approach in particular.
Sample code (will try to find a domain that breaks that I can share publicly):
Using nslookup or dig does return an A record. Using a version of node <16.6.2 also works.
Probably related to this similar issue:
#39780
How often does it reproduce? Is there a required condition?
Can be reproduced every time.
What is the expected behavior?
dns.resolve()returns a successful result (A record addresses).What do you see instead?
Error: Error: queryA EBADRESP test.tld at QueryReqWrap.onresolve [as oncomplete] (node:dns:213:19) { errno: undefined, code: 'EBADRESP', syscall: 'queryA', hostname: 'test.tld' }Additional information
Seems related to: