PowerDNS Authoritative Server 3.4.4 / 3.4.5 / 3.4.6 Process Packet Handling DoS
High Nessus Plugin ID 87947
SynopsisThe remote name server is affected by a denial of service vulnerability.
DescriptionAccording to its self-reported version number, the version of the PowerDNS Authoritative Server listening on the remote host is version 3.4.4, 3.4.5, or 3.4.6. It is, therefore, affected by a denial of service vulnerability due to an assertion flaw that is triggered when handling malformed packets. An unauthenticated, remote attacker can exploit this vulnerability, via crafted query packets, to crash the server.
Note that Nessus has not attempted to exploit this issue but has instead relied only on the application's self-reported version number.
Also, Nessus has not checked for the presence of the patch.
SolutionUpgrade to PowerDNS Authoritative Server 3.4.7 or later.
Alternatively, apply the patch referenced in the vendor advisory.