A vulnerability was discovered in DNS resolver component of knot resolver through version 3.2.0 before 4.1.0 which allows remote attackers to bypass DNSSEC validation for non-existence answer. NXDOMAIN answer would get passed through to the client even if its DNSSEC validation failed, instead of sending a SERVFAIL packet. Caching is not affected by this particular bug but see CVE-2019-10191.
CPE | Name | Operator | Version |
---|---|---|---|
knot-resolver | eq | 4.0.0 |
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/
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www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html