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CVE-2021-23017

Published: 25 May 2021

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.

Priority

Medium

CVSS 3 base score: 7.7

Status

Package Release Status
nginx
Launchpad, Ubuntu, Debian
bionic
Released (1.14.0-0ubuntu1.9)
focal
Released (1.18.0-0ubuntu1.2)
groovy
Released (1.18.0-6ubuntu2.2)
hirsute
Released (1.18.0-6ubuntu8.2)
impish
Released (1.18.0-6ubuntu9)
jammy
Released (1.18.0-6ubuntu9)
precise Does not exist

trusty
Released (1.4.6-1ubuntu3.9+esm2)
upstream Needs triage

xenial
Released (1.10.3-0ubuntu0.16.04.5+esm1)
Patches:
upstream: http://nginx.org/download/patch.2021.resolver.txt