CVE-2019-10190 — Improper Input Validation in Knot Resolver
Severity
7.5HIGHNVD
EPSS
0.3%
top 50.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 16
Latest updateOct 1
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 3.9 | Impact: 3.6
Affected Packages4 packages
Also affects: Fedora 29, 30
🔴Vulnerability Details
4GHSA▶
GHSA-5pqr-9wpj-5m82: A vulnerability was discovered in DNS resolver component of knot resolver through version 3↗2022-05-24
OSV▶
CVE-2019-10190: A vulnerability was discovered in DNS resolver component of knot resolver through version 3↗2019-07-16
CVEList▶
CVE-2019-10190: A vulnerability was discovered in DNS resolver component of knot resolver through version 3↗2019-07-16
📋Vendor Advisories
1Debian▶
CVE-2019-10190: knot-resolver - A vulnerability was discovered in DNS resolver component of knot resolver throug...↗2019
💬Community
3Bugzilla▶
CVE-2019-10190 knot-resolver: improper input validation in DNS resolver allows remote attacker to bypass DNSSEC validation [fedora-all]↗2019-07-15
Bugzilla▶
CVE-2019-10190 knot-resolver: improper input validation in DNS resolver allows remote attacker to bypass DNSSEC validation [epel-7]↗2019-07-15
Bugzilla▶
CVE-2019-10190 knot-resolver: improper input validation in DNS resolver allows remote attacker to bypass DNSSEC validation↗2019-07-05