What’s Vulnerable › Vulnerabilities

CVE-2018-10920

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-02 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.

Affected products

• CZ.NIC knot-resolver: before 2.4.1 — fixed in 2.4.1

How to fix

Upgrade to a fixed version: CZ.NIC knot-resolver 2.4.1. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920
• https://www.knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920
• https://www.knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.html

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