CVE-2023-28450

Publication date 15 March 2023

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
dnsmasq 24.04 LTS noble
Fixed 2.90-1
23.10 mantic
Fixed 2.90-0ubuntu0.23.10.1
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic
Fixed 2.86-1.1ubuntu2.1
22.04 LTS jammy
Fixed 2.86-1.1ubuntu0.3
20.04 LTS focal
Fixed 2.80-1.1ubuntu1.7
18.04 LTS bionic
Fixed 2.79-1ubuntu0.7
16.04 LTS xenial
14.04 LTS trusty

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
dnsmasq

Severity score breakdown

Parameter Value
Base score 7.5 · High
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

Related Ubuntu Security Notices (USN)

Other references