In PowerDNS Recursor versions up to and including 4.3.1, 4.2.2 and 4.1.16, the ACL restricting access to the internal web server is not properly enforced.
{ "binaries": [ { "binary_version": "4.0.0~alpha2-2ubuntu0.1+esm1", "binary_name": "pdns-recursor" } ] }
{ "binaries": [ { "binary_version": "4.1.1-2ubuntu0.1~esm1", "binary_name": "pdns-recursor" } ] }
{ "binaries": [ { "binary_version": "4.2.1-1ubuntu0.1~esm1", "binary_name": "pdns-recursor" } ] }