CVE-2021-20609
Quick assessment
Affected
Mitsubishi Electric Corporation MELSEC iQ-R Series R00CPU
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 Q 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 Q series 存在资源管理错误漏洞，攻击者可利用该漏洞执行拒绝服务攻击。以下产品和版本受到影响：MELSEC iQ-R series,Mitsubishi Electric MELSEC Q series,MELSEC-L Series,MELSEC-Q Series,MELIPC Series
Possible ATT&CK Techniques 2 AI
T1499 · Endpoint Denial of Service T1499.002 · Service Exhaustion Flood
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I. Basic Information for CVE-2021-20609
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU, MELSEC iQ-R Series R08/16/32/120PCPU, MELSEC iQ-R Series R08/16/32/120PSFCPU, MELSEC iQ-R Series R16/32/64MTCPU, MELSEC iQ-R Series R12CCPU-V, MELSEC Q Series Q03UDECPU, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU, MELSEC Q Series Q03/04/06/13/26UDVCPU, MELSEC Q Series Q04/06/13/26UDPVCPU, MELSEC Q Series Q12DCCPU-V, MELSEC Q Series Q24DHCCPU-V(G), MELSEC Q Series Q24/26DHCCPU-LS, MELSEC Q Series MR-MQ100, MELSEC Q Series Q172/173DCPU-S1, MELSEC Q Series Q172/173DSCPU, MELSEC Q Series Q170MCPU, MELSEC Q Series Q170MSCPU(-S1), MELSEC L Series L02/06/26CPU(-P), MELSEC L Series L26CPU-(P)BT and MELIPC Series MI5122-VW allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery.
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
Mitsubishi Electric MELSEC Q series 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mitsubishi Electric MELSEC Q 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 Q series 存在资源管理错误漏洞，攻击者可利用该漏洞执行拒绝服务攻击。以下产品和版本受到影响：MELSEC iQ-R series,Mitsubishi Electric MELSEC Q series,MELSEC-L Series,MELSEC-Q Series,MELIPC Series
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-2021-20609
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-20609 (2)
-
https://jvn.jp/vu/JVNVU94434051/index.html government-resource
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-334-02 government-resource
Same Patch Batch · Mitsubishi Electric Corporation · 2021-12-01 · 3 CVEs total
| CVE-2021-20611 | 7.5 HIGH | Mitsubishi Electric MELSEC iQ-R series 输入验证错误漏洞 |
| CVE-2021-20610 | 7.5 HIGH | 多款Mitsubishi Electric产品安全漏洞 |
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V. Comments for CVE-2021-20609
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