Samsung SmartThings Hub STH-ETH-250 0.20.17 URL Space command injection

Summaryinfo

A vulnerability categorized as critical has been discovered in Samsung SmartThings Hub STH-ETH-250 0.20.17. This affects an unknown part of the component URL Handler. The manipulation as part of Space results in command injection. This vulnerability is known as CVE-2018-3856. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Samsung SmartThings Hub STH-ETH-250 0.20.17 (Router Operating System). It has been classified as critical. Affected is an unknown functionality of the component URL Handler. The manipulation as part of a Space leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An exploitable vulnerability exists in the smart cameras RTSP configuration of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The device incorrectly handles spaces in the URL field, leading to an arbitrary operating system command injection. An attacker can send a series of HTTP requests to trigger this vulnerability.

The bug was discovered 07/26/2018. The weakness was published 08/23/2018 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability is traded as CVE-2018-3856 since 01/01/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The successful exploitation needs a authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability was handled as a non-public zero-day exploit for at least 28 days. During that time the estimated underground price was around $0-$5k.

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

Similar entries are available at VDB-123184, VDB-123183, VDB-123182 and VDB-123181. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Samsung

Name

• SmartThings Hub STH-ETH-250

Version

• 0.20.17

License

• open-source

Website

• Vendor: https://www.samsung.com/

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Once again VulDB remains the best source for vulnerability data.

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