CVE-2023-0811
Quick assessment
Affected
Omron CJ1M SYSMAC CJ-series
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Omron PLC CJ series是日本欧姆龙（Omron）公司的一款CJ系列可编程逻辑控制器（PLC）。 Omron CJ1M PLC v4.0 及之前版本存在访问控制错误漏洞，该漏洞源于存储 UM 密码的内存区域具有不正确的访问控制。
Possible ATT&CK Techniques 2 AI
T1499.003 · Application Exhaustion Flood T1552.001 · Credentials In Files
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I. Basic Information for CVE-2023-0811
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Omron PLC CJ series 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Omron PLC CJ series是日本欧姆龙（Omron）公司的一款CJ系列可编程逻辑控制器（PLC）。 Omron CJ1M PLC v4.0 及之前版本存在访问控制错误漏洞，该漏洞源于存储 UM 密码的内存区域具有不正确的访问控制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-0811
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2023-0811 (1)
Other References for CVE-2023-0811 (1)
IV. Related Vulnerabilities
Same weakness: CWE-284
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V. Comments for CVE-2023-0811
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