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CVE-2023-1424— Denial-of-Service and Remote Code Execution Vulnerability in MELSEC Series CPU module

Quick assessment

Affected
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/ES
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.

Mitsubishi Electric MELSEC iQ-F series是日本三菱电机（Mitsubishi Electric）公司的一款可编程逻辑控制器。 Mitsubishi Electric MELSEC iQ-F Series存在安全漏洞，该漏洞源于CPU模块中向缓冲区写入超过缓冲区能保存的最大数据量的数据，从而导致系统拒绝服务。攻击者利用该漏洞可以执行任意代码。

CVSS 10.0 · Critical EPSS 3.44% · P89

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-1424

Vulnerability Information
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Vulnerability Title
Denial-of-Service and Remote Code Execution Vulnerability in MELSEC Series CPU module
Source: CVE Program / CVE List V5
Vulnerability Description
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules and MELSEC iQ-R Series CPU modules allows a remote unauthenticated attacker to cause a denial of service (DoS) condition or execute malicious code on a target product by sending specially crafted packets. A system reset of the product is required for recovery from a denial of service (DoS) condition and malicious code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Mitsubishi Electric MELSEC iQ-F Series 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mitsubishi Electric MELSEC iQ-F series是日本三菱电机（Mitsubishi Electric）公司的一款可编程逻辑控制器。 Mitsubishi Electric MELSEC iQ-F Series存在安全漏洞，该漏洞源于CPU模块中向缓冲区写入超过缓冲区能保存的最大数据量的数据，从而导致系统拒绝服务。攻击者利用该漏洞可以执行任意代码。
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

Vendor Product Affected Versions CPE Subscribe
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/ES Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-64MT/ES Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-80MT/ES Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MR/ES Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-64MR/ES Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-80MR/ES Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/DS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-64MT/DS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-80MT/DS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MR/DS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-64MR/DS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-80MR/DS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/ESS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-64MT/ESS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-80MT/ESS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/DSS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-64MT/DSS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-80MT/DSS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MT/D Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-64MT/D Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-96MT/D Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MT/DSS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-64MT/DSS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-96MT/DSS Serial number 17X**** or later, versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MT/DS-TS versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MT/DSS-TS versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-F Series FX5UC-32MR/DS-TS versions from 1.220 to 1.281 -
Mitsubishi Electric Corporation MELSEC iQ-R Series R00CPU versions 35 and prior -
Mitsubishi Electric Corporation MELSEC iQ-R Series R01CPU versions 35 and prior -
Mitsubishi Electric Corporation MELSEC iQ-R Series R02CPU versions 35 and prior -

II. Public POCs for CVE-2023-1424

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III. Intelligence Information for CVE-2023-1424

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Vendor Advisories for CVE-2023-1424 (2)

IV. Related Vulnerabilities

Same product: MELSEC iQ-F Series FX5U-32MT/ES
Same vendor: Mitsubishi Electric Corporation
Same weakness: CWE-120

V. Comments for CVE-2023-1424

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