Total vulnerabilities in the database
An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.
| Software | From | Fixed in |
|---|---|---|
| powerdns / authoritative | - | 3.4.11 |
| powerdns / authoritative | 4.0.0 | 4.0.2 |
| powerdns / recursor | 4.0.0 | 4.0.4 |
| powerdns / recursor | - | 3.7.4 |
| debian / debian_linux | 8.0 | 8.0.x |