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CVE-2021-37172

Quick assessment

Affected
Siemens SIMATIC S7-1200 CPU family (incl. 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 S7-1200是德国西门子（Siemens）公司的一款S7-1200系列PLC（可编程逻辑控制器）。 SIMATIC S7-1200 存在授权问题漏洞，该漏洞源于设备无法根据配置的密码进行身份验证。这可能允许使用 TIA Portal V17 或更高版本的攻击者绕过身份验证并将任意程序下载到 PLC。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.92% · P57

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-37172

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 S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
SIMATIC S7-1200 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC S7-1200是德国西门子（Siemens）公司的一款S7-1200系列PLC（可编程逻辑控制器）。 SIMATIC S7-1200 存在授权问题漏洞，该漏洞源于设备无法根据配置的密码进行身份验证。这可能允许使用 TIA Portal V17 或更高版本的攻击者绕过身份验证并将任意程序下载到 PLC。
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 S7-1200 CPU family (incl. SIPLUS variants) V4.5.0 -

II. Public POCs for CVE-2021-37172

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III. Intelligence Information for CVE-2021-37172

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Vendor Advisories for CVE-2021-37172 (1)

Same Patch Batch · Siemens · 2021-08-10 · 9 CVEs total

CVE-2020-28397 Siemens SIMATIC S7-1500 CPU和SIMATIC S7-1500 授权问题漏洞
CVE-2021-25659 Siemens Automation License Manager 资源管理错误漏洞
CVE-2021-33717 JT2Go 和Teamcenter Visualization 代码问题漏洞
CVE-2021-33721 SINEC NMS 操作系统命令注入漏洞
CVE-2021-33738 Siemens Teamcenter Visualization和Siemens Jt2go缓冲区错误漏洞
CVE-2021-37178 Siemens Solid Edge 代码问题漏洞
CVE-2021-37179 Siemens Solid Edge 资源管理错误漏洞
CVE-2021-37180 Siemens Solid Edge 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
Same vendor: Siemens
Same weakness: CWE-287

V. Comments for CVE-2021-37172

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