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.
| Software | From | Fixed in |
|---|---|---|
| powerdns / recursor | 4.3.0 | 4.3.1.x |
| powerdns / recursor | 4.2.0 | 4.2.2.x |
| powerdns / recursor | - | 4.1.16.x |