CVE-2022-45794 Omron CJ-series and CS-series unauthenticated filesystem access.
An attacker with network access can read and write files on Omron CJ and CS-series PLCs without authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-45794?
CVE-2022-45794 is a high-severity missing authorization vulnerability in Omron CJ-series and CS-series CPU modules, published on 10 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.
Weakness: CWE-306
Which versions are affected by CVE-2022-45794?
It affects 41 products.
Products include Omron Sysmac Cj1g-Cpu42p Firmware, Omron Sysmac Cj1g-Cpu43p Firmware, Omron Sysmac Cj1g-Cpu44p Firmware, Omron Sysmac Cj1g-Cpu45p Firmware, Omron Sysmac Cj2h-Cpu64-Eip Firmware, Omron Sysmac Cj2h-Cpu64 Firmware and 35 more.
How do I fix CVE-2022-45794?
No fix has been published for CVE-2022-45794 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2022-45794 being exploited?
There is no known exploitation of CVE-2022-45794 in the wild and no public exploit code.
Sources
Also known as GHSA-j4xh-qhcf-rpxf.