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CVE-2023-28450

Published: 15 March 2023

An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
dnsmasq
Launchpad, Ubuntu, Debian
upstream
Released (2.90)
focal
Released (2.80-1.1ubuntu1.7)
bionic
Released (2.79-1ubuntu0.7)
jammy
Released (2.86-1.1ubuntu0.3)
kinetic
Released (2.86-1.1ubuntu2.1)
trusty
Released (2.68-1ubuntu0.2+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2.79-1ubuntu0.16.04.1+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
lunar Ignored
(end of life, was needs-triage)
mantic
Released (2.90-0ubuntu0.23.10.1)
Patches:
upstream: https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H