Samsung SmartThings Hub STH-ETH-250 0.20.17 Video Core videoHostUrl memory corruption

Summaryinfo

A vulnerability described as critical has been identified in Samsung SmartThings Hub STH-ETH-250 0.20.17. The affected element is an unknown function of the component Video Core. Executing a manipulation of the argument videoHostUrl as part of HTTP Request can lead to memory corruption. The identification of this vulnerability is CVE-2018-3872. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Samsung SmartThings Hub STH-ETH-250 0.20.17 (Router Operating System). This vulnerability affects an unknown code block of the component Video Core. The manipulation of the argument videoHostUrl as part of a HTTP Request 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. CVE summarizes:

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly extracts the videoHostUrl field from a user-controlled JSON payload, leading to a buffer overflow on the stack. An attacker can send an HTTP request to trigger this vulnerability.

The bug was discovered 07/26/2018. The weakness was shared 08/23/2018 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability was named CVE-2018-3872 since 01/01/2018. The exploitation appears to be easy. The attack can be initiated remotely. The requirement for exploitation is a single authentication. There are known technical details, but no exploit is 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.

The entries VDB-123188, VDB-123187, VDB-123186 and VDB-123185 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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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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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