AIKIDO-2026-618763
hickory-net is vulnerable to Improper Verification of Cryptographic Signature
50
Medium Risk
This Affects:
hickory-netTL;DR
When validating an NSEC3-signed NODATA response for a query at the zone apex, the validator returns a secure proof even when no NSEC3 record has a hashed owner name equal to the hash of the query name. An adversary can replay any validly signed non-apex NSEC3 record together with the zone's signed SOA to authenticate denial of any record type at the apex. Clients then cache the authenticated denial for the negative TTL. The fix requires a QNAME-matching NSEC3.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you have DNSSEC validation enabled
Background info
hickory-net is vulnerable to Improper Verification of Cryptographic Signature in versions 0.26.0 - 0.26.1.
How to fix this
Upgrade the hickory-net library to the patch version.
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