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GHSA-xj53-j257-hxvg
io.openremote/openremote-managerSummary
The predicted datapoint write endpoint allows users with only read:assets privileges to write predicted datapoints.
The endpoint:
PUT /api/{realm}/asset/predicted/{assetId}/{attributeName}
accepts write requests from users lacking write:assets.
The implementation appears to check READ_ASSETS while performing a write operation through:
assetPredictedDatapointService.updateValues(...)
PoC
A user was created with only:
read:assets
and without write:assets.
The following request succeeded:
PUT /api/master/asset/predicted/4Fr8Pcp7iDjrEmoSUFolvT/temperature
Request body:
[{"x":1779199999001,"y":1337}]
Response:
HTTP/2 204
Database verification confirmed the datapoint was written successfully:
entity_id: 4Fr8Pcp7iDjrEmoSUFolvT
attribute_name: temperature
value: 1337
Impact
Users with read-only asset permissions can modify predicted datapoints for assets.
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The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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