CVE-2023-38744
Description
Denial-of-service (DoS) vulnerability due to improper validation of specified type of input issue exists in the built-in EtherNet/IP port of the CJ Series CJ2 CPU unit and the communication function of the CS/CJ Series EtherNet/IP unit. If an affected product receives a packet which is specially crafted by a remote unauthenticated attacker, the unit of the affected product may fall into a denial-of-service (DoS) condition. Affected products/versions are as follows: CJ2M CPU Unit CJ2M-CPU3[] Unit version of the built-in EtherNet/IP section Ver. 2.18 and earlier, CJ2H CPU Unit CJ2H-CPU6[]-EIP Unit version of the built-in EtherNet/IP section Ver. 3.04 and earlier, CS/CJ Series EtherNet/IP Unit CS1W-EIP21 V3.04 and earlier, and CS/CJ Series EtherNet/IP Unit CJ1W-EIP21 V3.04 and earlier.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| omron cs1w-eip21_firmware | v ≤ 3.04 | — |
| omron cj2m-cpu35_firmware | v ≤ 2.18 | — |
| omron cj2m-cpu34_firmware | v ≤ 2.18 | — |
| omron cj2m-cpu33_firmware | v ≤ 2.18 | — |
| omron cj2m-cpu32_firmware | v ≤ 2.18 | — |
| omron cj2m-cpu31_firmware | v ≤ 2.18 | — |
| omron cj2h-cpu68-eip_firmware | v ≤ 3.04 | — |
| omron cj2h-cpu67-eip_firmware | v ≤ 3.04 | — |
| omron cj2h-cpu66-eip_firmware | v ≤ 3.04 | — |
| omron cj2h-cpu65-eip_firmware | v ≤ 3.04 | — |
| omron cj2h-cpu64-eip_firmware | v ≤ 3.04 | — |
| omron cj1w-eip21_firmware | v ≤ 3.04 | — |
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