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Advisories

Hickory DNS 0.25.0 through 0.26.0-alpha.1 DNSSEC Bogus Answer Cache Poisoning

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Severity
medium
Date
Affecting

  • hickory-dns >= 0.25.0, <= 0.26.0-alpha.1

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

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

CWE
  • CWE-613 Insufficient Session Expiration
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Credit
qifan-sailboat
Description
The validating recursor in Hickory DNS hickory-recursor 0.25.0 through 0.26.0-alpha.1, hickory-resolver 0.26.0-alpha.1 before 0.26.2, and hickory-net 0.26.0-beta.1 before 0.26.2 caches DNSSEC-bogus answers using the untrusted, attacker-supplied record TTL (capped at 24 hours) instead of a short validation-failure TTL. A remote attacker who spoofs a single authoritative response with an invalid signature and a long TTL can keep the bogus result cached for up to 24 hours.

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