High severity7.5NVD Advisory· Published Jul 16, 2019· Updated Jun 17, 2026
CVE-2019-10190
CVE-2019-10190
Description
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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Affected products
5cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- Range: <4.1.0, through 3.2.0
- CZ.NIC/knot-resolverv5Range: from 3.2.0 before 4.1.0
Patches
Vulnerability mechanics
References
5- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.htmlnvdRelease NotesVendor Advisory
- lists.debian.org/debian-lts-announce/2024/04/msg00017.htmlnvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/nvd
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