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OpenAdvisories
Medium USN-7759-1 1 CVE

isc-kea vulnerabilities

Published Sep 21, 2025 · Updated Jun 25, 2026

Ecosystem: Ubuntu

Summary

It was discovered that Kea DHCP did not correctly handle invalid hostnames.
A remote attacker could possibly use this issue to cause a denial of
service.

Fixed packages 2

ReleasePackageFixed in
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS isc-kea 1.0.0-1ubuntu0.1~esm1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS isc-kea 1.1.0-1ubuntu0.1~esm1

Vulnerabilities 1

  • Medium 6.5
    CVE-2019-6473

    A packet containing a malformed DUID can cause the kea-dhcp6 server to terminate

    An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.

    ISC Kea isc-kea kea Debian Ubuntu Alpine

References

  • report
    https://ubuntu.com/security/CVE-2019-6473