CVE-2017-9392: Buffer Overflow
First published: Mon Jun 17 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Getvera Vera Edge Firmware | <=1.7.19 | |
| Getvera Vera Edge | ||
| VeraLite Firmware | <=1.7.481 | |
| MiCasaVerde VeraLite |
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Reference Links
Frequently Asked Questions
What is CVE-2017-9392?
CVE-2017-9392 is a vulnerability found in VeraEdge and Veralite devices that provide UPnP services.
What is the severity of CVE-2017-9392?
CVE-2017-9392 has a severity rating of 8.8, which is considered critical.
What does CVE-2017-9392 affect?
CVE-2017-9392 affects VeraEdge 1.7.19 and Veralite 1.7.481 devices.
How can CVE-2017-9392 be exploited?
CVE-2017-9392 can be exploited through UPnP services provided by the affected devices.
Are VeraEdge and Veralite devices vulnerable to CVE-2017-9392?
VeraEdge devices with firmware version 1.7.19 and Veralite devices with firmware version 1.7.481 are vulnerable to CVE-2017-9392.
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