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

Summaryinfo

A vulnerability marked as critical has been reported in Samsung SmartThings Hub STH-ETH-250 0.20.17. Impacted is an unknown function of the component Video Core. Performing a manipulation as part of HTTP Requests results in memory corruption. This vulnerability was named CVE-2018-3867. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Samsung SmartThings Hub STH-ETH-250 0.20.17 (Router Operating System). This affects an unknown code of the component Video Core. The manipulation as part of a HTTP Requests 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. The summary by CVE is:

An exploitable stack-based buffer overflow vulnerability exists in the samsungWifiScan callback notification of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17. The video-core process incorrectly handles the answer received from a smart camera, leading to a buffer overflow on the stack. An attacker can send a series of HTTP requests to trigger this vulnerability.

The bug was discovered 07/26/2018. The weakness was presented 08/23/2018 (Website). It is possible to read the advisory at talosintelligence.com. This vulnerability is uniquely identified as CVE-2018-3867 since 01/01/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is needed for 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.

See VDB-123187, VDB-123186, VDB-123185 and VDB-123184 for similar entries. 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/

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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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