CVE-2018-3873 Memory corruption in SmartThings Hub STH-ETH-250

Critical 9.9 Published 21 Sep 2018 Updated 16 Sep 2024

A buffer overflow in the SmartThings Hub HTTP server allows remote attackers to execute arbitrary code via a long secretKey value.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-3873?

CVE-2018-3873 is a critical memory corruption vulnerability in Samsung SmartThings Hub STH-ETH-250, published on 21 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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 strncpy overflows the destination buffer, which has a size of 128 bytes. An attacker can send an arbitrarily long "secretKey" value in order to exploit this vulnerability.

Weakness: CWE-119

Which versions are affected by CVE-2018-3873?

It affects 1 product.

Products include Samsung Sth-Eth-250 Firmware.

How do I fix CVE-2018-3873?

No fix has been published for CVE-2018-3873 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-3873 being exploited?

There is no known exploitation of CVE-2018-3873 in the wild and no public exploit code.

Sources

Also known as GHSA-223p-pjp4-9vv5.