CVE-2023-0811
CRITICALCVSS 9.1/10EPSS 0.62%
Last modified
CVE-2023-0811 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Omron CJ1M unit v4.0 and prior has improper access controls on the memory region where the UM password is stored. If an adversary issues a PROGRAM AREA WRITE command to a specific memory region, they could overwrite the password. EPSS estimates a 0.62% chance of exploitation in the next 30 days.
Description
Omron CJ1M unit v4.0 and prior has improper access controls on the memory region where the UM password is stored. If an adversary issues a PROGRAM AREA WRITE command to a specific memory region, they could overwrite the password. This may lead to disabling UM protections or setting a non-ASCII password (non-keyboard characters) and preventing an engineer from viewing or modifying the user program.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Omron | Sysmac Cj2h-Cpu64 Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu64-Eip Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu65 Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu65-Eip Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu66 Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu66-Eip Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu67 Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu67-Eip Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu68 Firmware | All versions |
| Omron | Sysmac Cj2h-Cpu68-Eip Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu11 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu12 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu13 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu14 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu15 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu31 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu32 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu33 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu34 Firmware | All versions |
| Omron | Sysmac Cj2m-Cpu35 Firmware | All versions |
| Omron | Sysmac Cp1e-E10dr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E10dr-D Firmware | All versions |
| Omron | Sysmac Cp1e-E10dt-A Firmware | All versions |
| Omron | Sysmac Cp1e-E10dt-D Firmware | All versions |
| Omron | Sysmac Cp1e-E10dt1-A Firmware | All versions |
| Omron | Sysmac Cp1e-E10dt1-D Firmware | All versions |
| Omron | Sysmac Cp1e-E14dr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E14sdr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E20dr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E20sdr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E30dr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E30sdr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E40dr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E40sdr-A Firmware | All versions |
| Omron | Sysmac Cp1e-E60sdr-A Firmware | All versions |
| Omron | Sysmac Cp1e-Na20dr-A Firmware | All versions |
| Omron | Sysmac Cp1e-Na20dt-D Firmware | All versions |
| Omron | Sysmac Cp1e-Na20dt1-D Firmware | All versions |
| Omron | Sysmac Cp1h-X40dr-A Firmware | All versions |
| Omron | Sysmac Cp1h-X40dt-D Firmware | All versions |
| Omron | Sysmac Cp1h-X40dt1-D Firmware | All versions |
| Omron | Sysmac Cp1h-Xa40dr-A Firmware | All versions |
| Omron | Sysmac Cp1h-Xa40dt-D Firmware | All versions |
| Omron | Sysmac Cp1h-Xa40dt1-D Firmware | All versions |
| Omron | Sysmac Cp1h-Y20dt-D Firmware | All versions |
| Omron | Sysmac Cp1l-El20dr-D Firmware | All versions |
| Omron | Sysmac Cp1l-Em30dr-D Firmware | All versions |
| Omron | Sysmac Cp1l-Em30dt-D Firmware | All versions |
| Omron | Sysmac Cp1l-Em30dt1-D Firmware | All versions |
| Omron | Sysmac Cp1l-Em40dr-D Firmware | All versions |
Showing 50 of 128 affected configurations. See NVD for the full list.
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-073-01Third Party Advisory, US Government Resource
- https://www.ia.omron.com/product/vulnerability/OMSR-2023-001_en.pdfMitigation, Vendor Advisory
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-073-01Third Party Advisory, US Government Resource
- https://www.ia.omron.com/product/vulnerability/OMSR-2023-001_en.pdfMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-0811?
Omron CJ1M unit v4.0 and prior has improper access controls on the memory region where the UM password is stored. If an adversary issues a PROGRAM AREA WRITE command to a specific memory region, they could overwrite the password. This may lead to disabling UM protections or setting a non-ASCII password (non-keyboard characters) and preventing an engineer from viewing or modifying the user program.
How severe is CVE-2023-0811?
CVE-2023-0811 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.
How do I fix CVE-2023-0811?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
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- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-0811?
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Scan your code nowSource: NVD / NIST