CVE-2019-6474 MEDIUM

CVE-2019-6474: A packet containing a malformed DUID can cause the kea-dhcp6 server to terminate

Vendor Isc
Product Kea
Published October 16, 2019
Last update September 16, 2024

CVSS base score

5.7/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

October 16, 2019 CVE published
September 16, 2024 Record updated