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CVE-2020-15783

Quick assessment

Affected
Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
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.

Siemens SIMATIC S7-300是德国西门子（Siemens）公司的一款过程控制器。 Siemens SIMATIC S7-300存在资源管理错误漏洞，攻击者可利用该漏洞可以通过102端口数据包触发致命错误，从而触发拒绝服务。

AI Predicted 5.3 Difficulty: Easy EPSS 1.67% · P77

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 3

VendorProduct Version RangeStatus
Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) All versions affected
Siemens SIMATIC TDC CPU555 All versions affected
Siemens SINUMERIK 840D sl All versions affected
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I. Basic Information for CVE-2020-15783

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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
Siemens SIMATIC S7-300 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC S7-300是德国西门子（Siemens）公司的一款过程控制器。 Siemens SIMATIC S7-300存在资源管理错误漏洞，攻击者可利用该漏洞可以通过102端口数据包触发致命错误，从而触发拒绝服务。
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
Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) All versions -
Siemens SIMATIC TDC CPU555 All versions -
Siemens SINUMERIK 840D sl All versions -

II. Public POCs for CVE-2020-15783

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III. Intelligence Information for CVE-2020-15783

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Vendor Advisories for CVE-2020-15783 (1)

IV. Related Vulnerabilities

Same product: SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Same vendor: Siemens
Same weakness: CWE-400