How severe is CVE-2019-6474?

CVE-2019-6474 has a severity score of 6.5, which is considered medium.

Which software versions are affected by CVE-2019-6474?

The affected software versions are ISC Kea 1.4.0 to 1.5.0, ISC Kea 1.6.0-beta1, and ISC Kea 1.6.0-beta2.

How can CVE-2019-6474 be fixed?

To fix CVE-2019-6474, users should apply the latest security patches provided by ISC Kea.

Is there any additional information available for CVE-2019-6474?

Yes, you can find more information about CVE-2019-6474 in the ISC Knowledge Base at https://kb.isc.org/docs/cve-2019-6474.

Vulnerability/
CVE-2019-6474

medium

6.5

CWE

772

16/10/2019

16/9/2024

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

Q: What is CVE-2019-6474?

CVE-2019-6474 is a vulnerability in the Kea server where a missing check on incoming client requests can be exploited to cause invalid leases in the server's lease storage.

First published: Wed Oct 16 2019(Updated: )

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

Credit: security-officer@isc.org

Affected Software	Affected Version	How to fix
ISC Kea	>=1.4.0<=1.5.0
ISC Kea	=1.6.0-beta1
ISC Kea	=1.6.0-beta2

Remedy

Upgrade to a version of Kea containing a fix, available via https://www.isc.org/downloads. - Kea 1.4.0-P2 - Kea 1.5.0-P1 - Kea 1.6.0

Never miss a vulnerability like this again

Reference Links

https://kb.isc.org/docs/cve-2019-6474

Frequently Asked Questions

What is CVE-2019-6474?
CVE-2019-6474 is a vulnerability in the Kea server where a missing check on incoming client requests can be exploited to cause invalid leases in the server's lease storage.
How severe is CVE-2019-6474?
CVE-2019-6474 has a severity score of 6.5, which is considered medium.
Which software versions are affected by CVE-2019-6474?
The affected software versions are ISC Kea 1.4.0 to 1.5.0, ISC Kea 1.6.0-beta1, and ISC Kea 1.6.0-beta2.
How can CVE-2019-6474 be fixed?
To fix CVE-2019-6474, users should apply the latest security patches provided by ISC Kea.
Is there any additional information available for CVE-2019-6474?
Yes, you can find more information about CVE-2019-6474 in the ISC Knowledge Base at https://kb.isc.org/docs/cve-2019-6474.

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version/isc kea/1.6.0-beta1
version/isc kea/1.6.0-beta2

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