Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Ancestor-Delegation NSEC3
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| hickory-dns | hickory-dns | unaffected |
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| hickory-dns | hickory-dns | unaffected |
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No data.
No data.
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| Hickory-dns | Hickory-dns |
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| Hickory-dns | Hickory-dns |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.185% probability within 30 days)
Key SSVC decision points have not yet been added.
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Hickory-dns
Hickory-dns hickory-dns |
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| Vendors & Products |
Hickory-dns
Hickory-dns hickory-dns |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Hickory DNS hickory-proto 0.25 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw in the validating recursor's NSEC3 handler, which matches the closest encloser by hash alone without checking the type bitmap and so accepts parent-side ancestor-delegation NSEC3 records as proof of nonexistence. An attacker who delivers one response built from genuinely signed parent NSEC3 records can cause NXDOMAIN or NODATA to be cached with AD=1, denying resolution of existing names at and below the zone cut. | |
| Title | Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Ancestor-Delegation NSEC3 | |
| Weaknesses | CWE-345 | |
| References |
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| Metrics |
cvssV3_1
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