VULNERABILITY INTELLIGENCE

CVE-2018-5739

CVSS score6.5 MEDIUM
EPSS probability1.89%
CISA KEVNot currently listed
Published2019-01-16
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

An extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library facilities. In order to support multiple requests simultaneously, Kea 1.4 added a callout handle store but unfortunately the initial implementation of this store does not properly free memory in every case. Hooks which make use of query4 or query6 parameters in their callouts can leak memory, resulting in the eventual exhaustion of available memory and subsequent failure of the server process. Affects Kea DHCP 1.4.0.

Weakness classification

  • CWE-772: Missing Release of Resource after Effective Lifetime

Primary references