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CVE-2020-15791

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是西门子（Siemens）的一款组态软件。 Siemens SIMATIC版本中存在安全漏洞，该漏洞源于可以利用S7-300/S7-400的ISO-TSAP密码。攻击者可利用绕过对数据的访问限制，以获取敏感信息。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.72% · P52

Affected Version Matrix 4

VendorProduct Version RangeStatus
Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) All versions affected
Siemens SIMATIC S7-400 CPU family (incl. SIPLUS variants) All versions affected
Siemens SIMATIC WinAC RTX (F) 2010 All versions affected
Siemens SINUMERIK 840D sl All versions affected
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I. Basic Information for CVE-2020-15791

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 S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC是西门子（Siemens）的一款组态软件。 Siemens SIMATIC版本中存在安全漏洞，该漏洞源于可以利用S7-300/S7-400的ISO-TSAP密码。攻击者可利用绕过对数据的访问限制，以获取敏感信息。
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 S7-400 CPU family (incl. SIPLUS variants) All versions -
Siemens SIMATIC WinAC RTX (F) 2010 All versions -
Siemens SINUMERIK 840D sl All versions -

II. Public POCs for CVE-2020-15791

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III. Intelligence Information for CVE-2020-15791

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Vendor Advisories for CVE-2020-15791 (1)

Same Patch Batch · Siemens · 2020-09-09 · 3 CVEs total

CVE-2020-15786 Siemens SIMATIC HMI/WinCC 安全漏洞
CVE-2020-15787 Siemens Simatic Hmi 授权问题漏洞

IV. Related Vulnerabilities

Same product: SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Same vendor: Siemens
Same weakness: CWE-522

V. Comments for CVE-2020-15791

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