Knot DNS 1.6.x < 1.6.6 / 2.0.x < 2.0.2 NAPTR Record DoS
Medium Nessus Plugin ID 87965
Synopsis
The remote DNS server is affected by a denial of service vulnerability.
Description
The Knot DNS server running on the remote host is version 1.6.x prior to 1.6.6 or 2.0.x prior to 2.0.2. It is, therefore, affected by an out-of-bounds read error that occurs when parsing malformed NAPTR records. An unauthenticated, remote attacker can exploit this to disclose memory contents or crash the knotd daemon, resulting in a denial of service.
Solution
Upgrade to Knot DNS version 1.6.6 / 2.0.2 or later.