CVE-2018-18989 Use after free in CX-One (CX-Programmer and CX-Server)

High 7.8 Published 4 Dec 2018 Updated 5 Aug 2024

Attackers can execute arbitrary code via crafted project files due to a use-after-free vulnerability in Omron CX-One applications.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2018-18989?

CVE-2018-18989 is a high-severity use after free vulnerability in CX-One (CX-Programmer and CX-Server), published on 4 Dec 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

In CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior), when processing project files, the application fails to check if it is referencing freed memory. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application.

Weakness: CWE-416

Which versions are affected by CVE-2018-18989?

It affects 3 products.

Products include Omron Cx-One, Omron Cx-Programmer, Omron Cx-Server.

How do I fix CVE-2018-18989?

No fix has been published for CVE-2018-18989 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-18989 being exploited?

There is no known exploitation of CVE-2018-18989 in the wild and no public exploit code.

Sources

Also known as GHSA-6mv5-3jxx-rprv.