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

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
dnsmasq Launchpad, Ubuntu, Debian	upstream	Needs triage
	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	Needs triage
	mantic	Needs triage

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

References

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