USN-6034-1

    Dashboard / Vulnerabilities / USN-6034-1

    USN-6034-1

    Published: 20 Apr 2023Last Modified: 29 Jun 2026

    Summary: dnsmasq vulnerability

    Details: It was discovered that Dnsmasq was sending large DNS messages over UDP, possibly causing transmission failures due to IP fragmentation. This update lowers the default maximum size of DNS messages to improve transmission reliability over UDP.

    References: https://ubuntu.com/security/notices/USN-6034-1, https://ubuntu.com/security/CVE-2023-28450

    Affected packages

    Package

    Name: dnsmasq

    Purl: pkg:deb/ubuntu/dnsmasq?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.68-1ubuntu0.2+esm2

    Affected versions

    2.66-4ubuntu1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    USN-6034-1 | CVE-DB