CVE-2018-3912 Memory corruption in SmartThings Hub STH-ETH-250

High 7.5 Published 23 Aug 2018 Updated 17 Sep 2024

A stack buffer overflow in the video-core process allows remote code execution via a crafted secretKey value in the SQLite database.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-3912?

CVE-2018-3912 is a high-severity memory corruption vulnerability in Samsung SmartThings Hub STH-ETH-250, published on 23 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

On Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17, the video-core process insecurely extracts the fields from the "shard" table of its SQLite database, leading to a buffer overflow on the stack. The strcpy call 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-787

Which versions are affected by CVE-2018-3912?

It affects 1 product.

Products include Samsung Sth-Eth-250 Firmware.

How do I fix CVE-2018-3912?

No fix has been published for CVE-2018-3912 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-2018-3912 being exploited?

There is no known exploitation of CVE-2018-3912 in the wild and no public exploit code.

Sources

Also known as GHSA-jf9m-gjvc-r854.