High severity · published Jul 16, 2019
CVE-2019-10191
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,…
7.5
CVSS
1.9%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
29; 30 · source: NVD
KR
Knot Resolver · Nic
before 4.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10191
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-10191
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10191
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/
Release Notes
https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html
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