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 2019-10-16 18:15:37
Updated 2020-08-24 17:37:01
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2019-6474

0.15%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-6474

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.1
MEDIUM AV:A/AC:L/Au:N/C:N/I:N/A:C
6.5
6.9
NIST
6.5
MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
NIST
5.7
MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
2.1
3.6
Internet Systems Consortium (ISC)

CWE ids for CVE-2019-6474

References for CVE-2019-6474

  • https://kb.isc.org/docs/cve-2019-6474
    CVE-2019-6474: An oversight when validating incoming client requests can lead to a situation where the Kea server will exit when trying to restart - Security Advisories
    Vendor Advisory

Products affected by CVE-2019-6474

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