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Advisories

Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Unrelated RRset

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Severity
medium
Date
Affecting

  • hickory-dns <= 0.26.0-alpha.1

  • hickory-dns >= 0.26.0-beta.1, < 0.26.2

CWE
  • CWE-345 Insufficient Verification of Data Authenticity
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
qifan-sailboat
Description
Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw that accepts a response as a positive answer when any valid RRset appears in the answer section, without checking that the RRset is responsive to the query. Attackers can supply signed but unrelated RRsets so that responses lacking matching records are validated as positive answers instead of as no-data responses.

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