Shekar Endoscope WiFi memory corruption

Summaryinfo

A vulnerability identified as critical has been detected in Shekar Endoscope. Impacted is an unknown function of the component WiFi Handler. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2017-10724. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Shekar Endoscope (affected version not known). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component WiFi Handler. The manipulation with an unknown input 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:

Recently it was discovered as a part of the research on IoT devices in the most recent firmware for Shekar Endoscope that an attacker connected to the device Wi-Fi SSID can exploit a memory corruption issue and execute remote code on the device. This device acts as an Endoscope camera that allows its users to use it in various industrial systems and settings, car garages, and also in some cases in the medical clinics to get access to areas that are difficult for a human being to reach. Any breach of this system can allow an attacker to get access to video feed and pictures viewed by that user and might allow them to get a foot hold in air gapped networks especially in case of nation critical infrastructure/industries. The firmware contains binary uvc_stream that is the UDP daemon which is responsible for handling all the UDP requests that the device receives. The client application sends a UDP request to change the Wi-Fi name which contains the following format: "SETCMD0001+0002+[2 byte length of wifipassword]+[Wifipassword]. This request is handled by "control_Dev_thread" function which at address "0x00409AE4" compares the incoming request and determines if the 10th byte is 02 and if it is then it redirects to 0x0040A7D8, which calls the function "setwifipassword". The function "setwifipassword" uses a memcpy function but uses the length of the payload obtained by using strlen function as the third parameter which is the number of bytes to copy and this allows an attacker to overflow the function and control the $PC value.

The weakness was disclosed 06/17/2019 as not defined mailinglist post (Bugtraq). The advisory is shared at seclists.org. This vulnerability is known as CVE-2017-10724 since 07/01/2017. The attack can be launched remotely. A single authentication is required for exploitation. Neither technical details nor an exploit are publicly 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 pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Shekar

Name

• Endoscope

CPE 2.3info

• 🔍

CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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