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.
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "5.4.4-1", "binary_name": "knot-resolver" }, { "binary_version": "5.4.4-1", "binary_name": "knot-resolver-dbgsym" }, { "binary_version": "5.4.4-1", "binary_name": "knot-resolver-doc" }, { "binary_version": "5.4.4-1", "binary_name": "knot-resolver-module-http" } ] }