CVE-2019-10190
knot-resolver - security update
7.5
HIGH
CVSS 3.1
EPSS 0.26%
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.
How to fix CVE-2019-10190
To remediate CVE-2019-10190, upgrade the affected package to a fixed version below.
- —upgrade to 5.0.1-1 or later
- —upgrade to 3.2.1-3+deb10u2 or later
Is CVE-2019-10190 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.0.1-1
- from 0, < 3.2.1-3+deb10u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |