What’s Vulnerable › Vulnerabilities

CVE-2018-1000002

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-01-22 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper input validation bugs in DNSSEC validators components in Knot Resolver (prior version 1.5.2) allow attacker in man-in-the-middle position to deny existence of some data in DNS via packet replay.

Affected products

• CZ.NIC knot-resolver: before 1.5.2 — fixed in 1.5.2

How to fix

Upgrade to a fixed version: CZ.NIC knot-resolver 1.5.2. Check the vendor advisory for mitigations.

References

• https://www.knot-resolver.cz/2018-01-22-knot-resolver-1.5.2.html
• https://www.knot-resolver.cz/2018-01-22-knot-resolver-1.5.2.html

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