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CVE-2019-6474

A packet containing a malformed DUID can cause the kea-dhcp6 server to terminate

Published: Oct 16, 2019Updated: Nov 21, 2024 Sources: CVE List NVDCWE-772
NVD MITRE
5.7CVSSMEDIUM
EPSS Score
1.1%
Top 37.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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

CVSS Vector Breakdown

AV:AAC:LPR:NUI:RS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-772

Affected Products

keaiscNetworking Infrastructure
KeaISCNetworking Infrastructure
isccommercialUSNetworking Infrastructureaka internet systems consortium

Exploitability

Official Patch Available

References

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

Timeline

Published
Oct 16, 2019
Last Updated
Nov 21, 2024

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