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CVE-2021-33719

Quick assessment

Affected
Siemens SIPROTEC 5 relays with CPU variants CP050
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 SIPROTEC 5是德国西门子（Siemens）公司的一款多功能继电器。 Siemens SIPROTEC 5 存在代码注入漏洞，该漏洞源于使用 tcp 协议发送到端口 4443 的特别制作的数据包可能导致拒绝服务条件或潜在的远程代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 2.16% · P82

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-33719

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition or potential remote code execution.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIPROTEC 5 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIPROTEC 5是德国西门子（Siemens）公司的一款多功能继电器。 Siemens SIPROTEC 5 存在代码注入漏洞，该漏洞源于使用 tcp 协议发送到端口 4443 的特别制作的数据包可能导致拒绝服务条件或潜在的远程代码执行。
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 SIPROTEC 5 relays with CPU variants CP050 All versions < V8.80 -
Siemens SIPROTEC 5 relays with CPU variants CP100 All versions < V8.80 -
Siemens SIPROTEC 5 relays with CPU variants CP300 All versions < V8.80 -

II. Public POCs for CVE-2021-33719

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III. Intelligence Information for CVE-2021-33719

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Vendor Advisories for CVE-2021-33719 (1)

Same Patch Batch · Siemens · 2021-09-14 · 30 CVEs total

CVE-2021-33737 7.5 HIGH Siemens SIAMTIC CP343-1 缓冲区错误漏洞
CVE-2021-37184 Siemens Industrial Edge Management 授权问题漏洞
CVE-2019-10941 SINEMA Server 访问控制错误漏洞
CVE-2021-25665 Simcenter STAR-CCM+ Viewer 缓冲区错误漏洞
CVE-2021-31891 Siemens Desigo CC 操作系统命令注入漏洞
CVE-2021-27391 Siemens APOGEE MBC 缓冲区错误漏洞
CVE-2021-33716 Siemens SIMATIC CP 1543-1和SIMATIC CP 1545-1 安全漏洞
CVE-2021-33720 Siemens SIPROTEC 5 代码注入漏洞
CVE-2021-37173 Siemens RUGGEDCOM 信息泄露漏洞
CVE-2021-37174 Siemens RUGGEDCOM 授权问题漏洞
CVE-2021-37175 Siemens RUGGEDCOM 授权问题漏洞
CVE-2021-37176 Siemens Simcenter Femap 缓冲区错误漏洞
CVE-2021-37177 Siemens SINEMA Remote Connect Server 访问控制错误漏洞
CVE-2021-37181 多款 Siemens 产品代码问题漏洞
CVE-2021-37183 Siemens SINEMA Remote Connect Server 访问控制错误漏洞
CVE-2021-40357 Siemens Teamcenter Active Workspace 路径遍历漏洞
CVE-2021-37186 Siemens SIMATIC 安全特征问题漏洞
CVE-2021-37191 Siemens SINEMA Remote Connect Server 安全漏洞
CVE-2021-37190 Siemens SINEMA Remote Connect Server 信息泄露漏洞
CVE-2021-37192 Siemens SINEMA Remote Connect Server 信息泄露漏洞

Showing top 20 of 30 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: SIPROTEC 5 relays with CPU variants CP050
Same vendor: Siemens
Same weakness: CWE-120

V. Comments for CVE-2021-33719

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