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CVE-2019-6474 Details

Description

A missing check on incoming client requests can be exploited to cause a situation where the Kea server's lease storage contains leases which are rejected as invalid when the server tries to load leases from storage on restart. If the number of such leases exceeds a hard-coded limit in the Kea code, a server trying to restart will conclude that there is a problem with its lease store and give up. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:5.7 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://kb.isc.org/docs/cve-2019-6474	CVE	Vendor Advisory
https://kb.isc.org/docs/cve-2019-6474	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-772	Missing Release of Resource after Effective Lifetime	[email protected]

Affected Products

Product	Versions
isc kea	>= 1.4.0, <= 1.5.0 1.6.0 beta1 1.6.0 beta2
CPE cpe:2.3:a:isc:kea:::::::: cpe:2.3:a:isc:kea:1.6.0:beta1:::::: cpe:2.3:a:isc:kea:1.6.0:beta2:::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 24, 2020	CWE Remap	[email protected]
Oct 18, 2019	Initial Analysis	[email protected]