Improper Access Control Affecting dnsmasq package, versions <2.69-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.09% (42nd percentile)

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  • Snyk IDSNYK-DEBIAN8-DNSMASQ-575028
  • published1 Jul 2020
  • disclosed6 Feb 2021

Introduced: 1 Jul 2020

CVE-2020-14312  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade Debian:8 dnsmasq to version 2.69-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dnsmasq package and not the dnsmasq package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

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 Scores

version 3.1