PowerDNS Recursor 4.0.x < 4.0.8 CNAME Parser DoS (CVE-2017-15120)
Medium Nessus Plugin ID 106195
SynopsisThe remote name server is affected by a denial of service vulnerability.
DescriptionAccording to its self-reported version number, the version of the PowerDNS Recursor listening on the remote host is version 4.0.x prior to 4.0.8. It is, therefore, affected by a denial of service vulnerability in the CNAME parser.
Note that Nessus has not attempted to exploit these issues 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 Recursor 4.0.8 or later. Alternatively, apply the patches referenced in the vendor advisories.