CVE-2018-3878 Memory corruption in SmartThings Hub STH-ETH-250

Critical 9.9 Published 23 Aug 2018 Updated 17 Sep 2024

Buffer overflow in SmartThings Hub video-core allows remote code execution via crafted JSON payload.

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-2018-3878?

CVE-2018-3878 is a critical memory corruption vulnerability in Samsung SmartThings Hub STH-ETH-250, published on 23 Aug 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Multiple exploitable buffer overflow vulnerabilities exist in the credentials handler 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 extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. A strncpy overflows the destination buffer, which has a size of 16 bytes. An attacker can send an arbitrarily long "region" value in order to exploit this vulnerability.

Weakness: CWE-119

Which versions are affected by CVE-2018-3878?

It affects 1 product.

Products include Samsung Sth-Eth-250 Firmware.

How do I fix CVE-2018-3878?

No fix has been published for CVE-2018-3878 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-2018-3878 being exploited?

There is no known exploitation of CVE-2018-3878 in the wild and no public exploit code.

Sources

Also known as GHSA-2r6c-crq4-rgxw.