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.

References

https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/

https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3