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CVE-2021-3672

Published: 10 August 2021

A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.

Priority

Medium

CVSS 3 base score: 5.6

Status

Package Release Status
c-ares
Launchpad, Ubuntu, Debian
bionic
Released (1.14.0-1ubuntu0.1)
focal
Released (1.15.0-1ubuntu0.1)
hirsute
Released (1.17.1-1ubuntu0.1)
impish
Released (1.17.1-1ubuntu1)
jammy
Released (1.17.1-1ubuntu1)
trusty Does not exist

upstream
Released (1.17.2)
xenial
Released (1.10.0-3ubuntu0.2+esm1)