Samsung SmartThings Hub STH-ETH-250 0.20.17 Video-Core Process HTTP Request Header Injection response splitting

Summaryinfo

A vulnerability was found in Samsung SmartThings Hub STH-ETH-250 0.20.17. It has been classified as critical. This affects an unknown part of the component Video-Core Process. The manipulation as part of HTTP Request leads to response splitting (Header Injection). This vulnerability is documented as CVE-2018-3911. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Samsung SmartThings Hub STH-ETH-250 0.20.17 (Router Operating System). It has been rated as critical. This issue affects an unknown code block of the component Video-Core Process. The manipulation as part of a HTTP Request leads to a response splitting vulnerability (Header Injection). Using CWE to declare the problem leads to CWE-113. The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An exploitable HTTP header injection vulnerability exists in the remote servers of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process listens on port 39500 and relays any unauthenticated message to SmartThings' remote servers, which insecurely handle JSON messages, leading to partially controlled requests generated toward the internal video-core process. An attacker can send an HTTP request to trigger this vulnerability.

The bug was discovered 07/26/2018. The weakness was released 08/23/2018 (Website). It is possible to read the advisory at talosintelligence.com. The identification of this vulnerability is CVE-2018-3911 since 01/01/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

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.

Entries connected to this vulnerability are available at VDB-123195, VDB-123194, VDB-123193 and VDB-123192. Be aware that VulDB is the high quality 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/

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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