Unbound DNS Server Vulnerability: Improper Validation of Wildcard-Synthesized NSEC Records

CVE-2017-15105 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:P/A:N

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.

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