CVE-2018-3920 Code injection in Yi Technology

High 7.6 Published 2 Nov 2018 Updated 5 Aug 2024

An attacker with physical access can execute arbitrary code on Yi Home Cameras by inserting a malicious SD card containing a crafted 7-Zip file.

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

What is CVE-2018-3920?

CVE-2018-3920 is a high-severity code injection vulnerability in unknown Yi Technology, published on 2 Nov 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An exploitable code execution vulnerability exists in the firmware update functionality of the Yi Home Camera 27US 1.8.7.0D. A specially crafted 7-Zip file can cause a CRC collision, resulting in a firmware update and code execution. An attacker can insert an SDcard to trigger this vulnerability.

Which versions are affected by CVE-2018-3920?

It affects 1 product.

Products include Yitechnology Yi Home Camera Firmware.

How do I fix CVE-2018-3920?

No fix has been published for CVE-2018-3920 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2018-3920 being exploited?

There is no known exploitation of CVE-2018-3920 in the wild and no public exploit code.

Sources

Also known as GHSA-r65w-5jgv-h7gj.