CVE-2019-10190: Input Validation
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.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2019-10190.
What is the severity level of CVE-2019-10190?
CVE-2019-10190 has a severity level of high, with a severity value of 7.5.
Which software versions are affected by CVE-2019-10190?
Knot Resolver versions up to and including 3.2.0, as well as Knot Resolver versions 4.0.0 to 4.1.0, are affected by CVE-2019-10190.
What is the impact of CVE-2019-10190?
CVE-2019-10190 allows remote attackers to bypass DNSSEC validation for non-existence answers, potentially leading to DNS spoofing or other types of attacks.
Are there any references or resources for CVE-2019-10190?
Yes, for more information about CVE-2019-10190, you can refer to the following resources: - [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190) - [Fedora Project Message 1](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/) - [Fedora Project Message 2](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/)