Vera VeraEdge/Veralite UPnP Service /port_3480 REQ_Image request_image memory corruption

Summaryinfo

A vulnerability was found in Vera VeraEdge and Veralite. It has been rated as critical. The affected element is the function LU::Generic_IP_Camera_Manager::REQ_Image of the file /port_3480 of the component UPnP Service. This manipulation of the argument request_image as part of Query String causes memory corruption. The identification of this vulnerability is CVE-2017-9392. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Vera VeraEdge and Veralite (version unknown). Affected by this vulnerability is the function LU::Generic_IP_Camera_Manager::REQ_Image of the file /port_3480 of the component UPnP Service. The manipulation of the argument request_image as part of a Query String leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 "request_image" as one of the service actions for a normal user to retrieve an image from a camera that is controlled by the controller. It seems that the "res" (resolution) parameter passed in the query string is not sanitized and is stored on the stack which allows an attacker to overflow the buffer. The function "LU::Generic_IP_Camera_Manager::REQ_Image" is activated when the lu_request_image is passed as the "id" parameter in the query string. This function then calls "LU::Generic_IP_Camera_Manager::GetUrlFromArguments". This function retrieves all the parameters passed in the query string including "res" and then uses the value passed in it to fill up buffer using the sprintf function. However, the function in this case lacks a simple length check and as a result an attacker who is able to send more than 184 characters can easily overflow the values stored on the stack including the $RA value and thus execute code on the device.

The weakness was shared 06/17/2019 as not defined mailinglist post (Bugtraq). The advisory is shared at seclists.org. This vulnerability is known as CVE-2017-9392 since 06/02/2017. The attack can be launched remotely. The successful exploitation requires a single authentication. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-136204, VDB-136205, VDB-136206 and VDB-136207 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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• Vera

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• VeraEdge
• Veralite

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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