CVE-2023-22421 Memory corruption in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software)
An attacker can trigger an out-of-bounds read by tricking a user into opening a malicious project file, leading to information disclosure or arbitrary code execution.
- 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-2023-22421?
CVE-2023-22421 is a high-severity memory corruption vulnerability in JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software (Former name: Koyo PLC Programming Software), published on 5 Mar 2023. 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
Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.9.0 and earlier. The insufficient buffer size for the PLC program instructions leads to out-of-bounds read. As a result, opening a specially crafted project file may lead to information disclosure and/or arbitrary code execution.
Weakness: CWE-125
Which versions are affected by CVE-2023-22421?
It affects 1 product.
Products include Jtekt Kostac Plc Programming Software.
How do I fix CVE-2023-22421?
No fix has been published for CVE-2023-22421 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-2023-22421 being exploited?
There is no known exploitation of CVE-2023-22421 in the wild and no public exploit code.
Other vulnerabilities in JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software (Former name: Koyo PLC Programming Software)
Sources
Also known as GHSA-773f-mh54-2mhm.