CVE-2019-10191 Security feature bypass in knot-resolver

What is CVE-2019-10191?

CVE-2019-10191 is a medium-severity vulnerability in Fedoraproject Fedora, published on 16 Jul 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-20

Which versions are affected by CVE-2019-10191?

It affects 2 products.

Products include Fedoraproject Fedora, Nic Knot Resolver.

How do I fix CVE-2019-10191?

Upgrade to a fixed version.

Is CVE-2019-10191 being exploited?

There is no known exploitation of CVE-2019-10191 in the wild and no public exploit code.

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• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-10191, GHSA-5w8c-g2pj-65rx, UBUNTU-CVE-2019-10191.