Shekar Endoscope WiFi memory corruption

Summaryinfo

A vulnerability categorized as critical has been discovered in Shekar Endoscope. This issue affects some unknown processing of the component WiFi Handler. The manipulation results in memory corruption. This vulnerability is identified as CVE-2017-10723. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Shekar Endoscope (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the component WiFi Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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+0001+[2 byte length of wifiname]+[Wifiname]. This request is handled by "control_Dev_thread" function which at address "0x00409AE0" compares the incoming request and determines if the 10th byte is 01 and if it is then it redirects to 0x0040A74C which calls the function "setwifiname". The function "setwifiname" 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 released 06/17/2019 as not defined mailinglist post (Bugtraq). The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2017-10723 since 07/01/2017. It is possible to launch the attack remotely. The successful exploitation needs a authentication. There are neither technical details nor an exploit publicly available.

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

Entries connected to this vulnerability are available at VDB-136204, VDB-136205, VDB-136206 and VDB-136207. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Shekar

Name

• Endoscope

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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