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CVE-2019-10190 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190	CVE	Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/	CVE
https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html	CVE	Release NotesVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190	[email protected]	Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/	[email protected]
https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html	[email protected]	Release NotesVendor Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
nic knot resolver	<= 3.2.0 >= 4.0.0, < 4.1.0
CPE cpe:2.3:a:nic:knot_resolver:::::::: Remediation No remediation found in references.
fedoraproject fedora	29 30
CPE cpe:2.3:o:fedoraproject:fedora:29:::::::* cpe:2.3:o:fedoraproject:fedora:30:::::::* Remediation No remediation found in references.

Change History

13 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Apr 26, 2024	CVE Modified	[email protected]
Feb 12, 2023	CVE Modified	[email protected]
Oct 28, 2021	Reanalysis	[email protected]
Feb 18, 2020	Modified Analysis	[email protected]
Nov 6, 2019	CPE Deprecation Remap	[email protected]
Nov 6, 2019	CPE Deprecation Remap	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
Jul 19, 2019	CVE Modified	[email protected]
Jul 19, 2019	CVE Modified	[email protected]
Jul 19, 2019	Initial Analysis	[email protected]