CVE-2020-14312
mediumpriority · track · 24EPSS 0.012 · 69 %ileEUUSEPSS · scored 2026-10-27
A flaw was found in the default configuration of dnsmasq, as shipped with Fedora versions prior to 31 and in all versions Red Hat Enterprise Linux, where it listens on any interface and accepts queries from addresses outside of its local subnet. In particular, the option `local-service` is not enabled. Running dnsmasq in this manner may inadvertently make it an open resolver accessible from any address on the internet. This flaw allows an attacker to conduct a Distributed Denial of Service (DDoS) against other systems.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
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affected products (3)
Products and version ranges known to be affected.
also known as (3)
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sources
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references (7)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2020-14312cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=1851342cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-14312cnnvd
- https://vigilance.fr/vulnerability/Fedora-SUSE-ingress-filtrering-bypass-via-Dnsmasq-Open-Resolver-36733cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.3585cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=1851342enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=1851342Issue TrackingThird Party Advisorynvd
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