CVE-2019-10191 Information

Description

A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade DNSSEC-secure domains to DNSSEC-insecure state opening possibility of domain hijack using attacks against insecure DNS protocol.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10191 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/ https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5