Kea issues
https://gitlab.isc.org/isc-projects/kea/-/issues
2020-05-27T08:08:16Z
https://gitlab.isc.org/isc-projects/kea/-/issues/158
reservation is allowed for out-of-subnet address and/or non-existent subnet-id
2020-05-27T08:08:16Z
Cathy Almond
reservation is allowed for out-of-subnet address and/or non-existent subnet-id
Reported by a Support customer:
https://support.isc.org/Ticket/Display.html?id=13626
---
name: Bug report
about: Kea 1.4.0 P1
---
kea-dhcp4 API accepts the creation of reservations for non-existent subnet-IDs and/or for out-of-subnet ...
Reported by a Support customer:
https://support.isc.org/Ticket/Display.html?id=13626
---
name: Bug report
about: Kea 1.4.0 P1
---
kea-dhcp4 API accepts the creation of reservations for non-existent subnet-IDs and/or for out-of-subnet ip addresses, tested with mysql backend for hosts.
To reproduce:
1) create a new subnet 192.0.0.0/24, with subnet id 999
REQUEST:
{
"arguments": {
"subnet4": [
{
"id": 999,
"match-client-id": true,
"option-data": [
{
"always-send": false,
"code": 3,
"csv-format": false,
"data": "c0000001",
"name": "routers",
"space": "dhcp4"
}
],
"pools": [
{
"pool": "192.0.0.2-192.0.0.254"
}
],
"rebind-timer": 2970,
"relay": {
"ip-addresses": [
"192.0.0.1"
]
},
"renew-timer": 1800,
"reservation-mode": "all",
"subnet": "192.0.0.0/24",
"valid-lifetime": 3600
}
]
},
"command": "subnet4-add",
"service": [
"dhcp4"
]
}
RESPONSE:
[ { "arguments": { "subnets": [ { "id": 999, "subnet": "192.0.0.0/24" } ] }, "result": 0, "text": "IPv4 subnet added" } ]
2) create a reservation for out-of-subnet address using 1.2.3.4 as IP and 999 as subnet-id
REQUEST:
{
"arguments": {
"reservation": {
"hw-address": "ca:fe:ca:fe:ca:fe",
"ip-address": "1.2.3.4",
"subnet-id": 999
}
},
"command": "reservation-add",
"service": [
"dhcp4"
]
}
RESPONSE:
[ { "result": 0, "text": "Host added." } ]
3) create a reservation for a non-existent subnet-id using 192.0.0.10 as IP and 123 as subnet-id
REQUEST:
{
"arguments": {
"reservation": {
"hw-address": "fa:ce:fa:ce:fa:ce",
"ip-address": "192.0.0.10",
"subnet-id": 123
}
},
"command": "reservation-add",
"service": [
"dhcp4"
]
}
RESPONSE:
[ { "result": 0, "text": "Host added." } ]
4) verify the presence of both reservations in the "hosts" table
Kea1.5-beta2
Marcin Siodelski
Marcin Siodelski