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CVE-2019-6535— Mitsubishi Electric MELSEC-Q Series PLCs Resource Exhaustion

Quick assessment

Affected
Mitsubishi Electric Q03/04/06/13/26UDVCPU
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Misubishi Electric Q03UDVCPU等都是日本三菱电机（Misubishi Electric）公司的PLC（可编程逻辑控制器）产品。 多款Misubishi产品中存在安全漏洞。远程攻击者可通过发送特制的数据包利用该漏洞造成Ethernet停止通信。以下产品受到影响：Misubishi Q03UDVCPU；Q04UDVCPU；Q06UDVCPU；Q13UDVCPU；Q26UDPVCPU；Q03UDECPU；Q04UDEHCPU；Q06UDEHCPU；Q10UDEHCPU；Q13UDEHC

CVSS 7.5 · High EPSS 4.27% · P91

Possible ATT&CK Techniques 1 AI

T1595.002 · Vulnerability Scanning
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I. Basic Information for CVE-2019-6535

Vulnerability Information
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Vulnerability Title
Mitsubishi Electric MELSEC-Q Series PLCs Resource Exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
Mitsubishi Electric Q03/04/06/13/26UDVCPU: serial number 20081 and prior, Q04/06/13/26UDPVCPU: serial number 20081 and prior, and Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU: serial number 20101 and prior. A remote attacker can send specific bytes over Port 5007 that will result in an Ethernet stack crash and disruption to USB communication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
多款Misubishi产品资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Misubishi Electric Q03UDVCPU等都是日本三菱电机（Misubishi Electric）公司的PLC（可编程逻辑控制器）产品。 多款Misubishi产品中存在安全漏洞。远程攻击者可通过发送特制的数据包利用该漏洞造成Ethernet停止通信。以下产品受到影响：Misubishi Q03UDVCPU；Q04UDVCPU；Q06UDVCPU；Q13UDVCPU；Q26UDPVCPU；Q03UDECPU；Q04UDEHCPU；Q06UDEHCPU；Q10UDEHCPU；Q13UDEHC
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 Q03/04/06/13/26UDVCPU 0 ~ serial number 20081 -
Mitsubishi Electric Q04/06/13/26UDPVCPU 0 ~ serial number 20081 -
Mitsubishi Electric Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU 0 ~ serial number 20101 -

II. Public POCs for CVE-2019-6535

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III. Intelligence Information for CVE-2019-6535

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Vendor Advisories for CVE-2019-6535 (1)

Other References for CVE-2019-6535 (1)

IV. Related Vulnerabilities

Same vendor: Mitsubishi Electric
Same weakness: CWE-400

V. Comments for CVE-2019-6535

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