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CVE-2017-9383: Getvera Veraedge Firmware: Improper Authentication

CVE-2017-9383 is rated critical with a CVSS v3.0 base score of 9.9 and NVD lists 2 affected products, including Getvera Veraedge Firmware. Per its scoring, it can be exploited over the network, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

An issue was discovered on Vera VeraEdge 1.7.19 and Veralite 1.7.481 devices. The device provides UPnP services that are available on port 3480 and can also be accessed via port 80 using the url "/port_3480". It seems that the UPnP services provide "wget" as one of the service actions for a normal user to connect the device to an external website. It retrieves the parameter "URL" from the query string and then passes it to an internal function that uses the curl module on the device to retrieve the contents of the website.

Severity breakdown

CVSS v3.0 9.9: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: Low. A basic user account is enough.
User interaction: None. No action from any user is needed.
Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-287: Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected products

Getvera Veraedge Firmware: up to and including 1.7.19
Getvera Veralite Firmware: up to and including 1.7.481