Vulnerability in Isc Kea

CVE-2019-6474

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

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2019-6474: held from 0.007 to 0.007.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

  • Isc Kea — versions 1.6.0-beta2, 1.4.0 to 1.5.0, 1.6.0-beta1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-6474?
CVE-2019-6474 is a medium-severity vulnerability in Isc Kea, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 5.7/10. Published 2019-10-16.
How severe is CVE-2019-6474?
Medium severity. CVSS v3 base score is 5.7 out of 10.