AIKIDO-2026-796235
hickory-net is vulnerable to Improper Verification of Cryptographic Signature
78
High Risk
This Affects:
hickory-netTL;DR
The NSEC3 covering-record check uses inverted relational operators in its wrap-around branch. When an NSEC3 record's owner hash sorts after its next hashed owner name, the code treats the record as covering every hash except its own owner. A wrap-around NSEC3 record and its signature obtained from a victim zone can then be used to forge negative responses. This allows forgery of proofs of nonexistence. The fix corrects the comparison.
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.
Are You Affected?
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