AIKIDO-2026-836615
hickory-net is vulnerable to Improper Verification of Cryptographic Signature
37
Low Risk
This Affects:
hickory-netTL;DR
DNSSEC validation does not sufficiently distinguish a NODATA response from a positive response produced by wildcard expansion. For a query that should yield NODATA in a zone that has wildcard records, an adversary can combine a matching NSEC3 record, a wildcard-named record, and its signature into a bogus positive response that validation accepts. When the query name is proven to exist, wildcard expansion should not be accepted. The fix rejects wildcard-expanded answers in this case.
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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