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CVE-2021-33191— MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol

Quick assessment

Affected
Apache Software Foundation Apache NiFi - MiNiFi C++
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache NiFi是美国阿帕奇（Apache）基金会的一套数据处理和分发系统。该系统主要用于数据路由、转换和系统中介逻辑。 Apache NiFi MiNiFi C++ version 0.5.0之前版本存在安全漏洞，攻击者可以通过c2协议在代理主机上执行CPP任意脚本。

AI Predicted 8.8 Difficulty: Easy EPSS 4.02% · P90

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-33191

Vulnerability Information
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Vulnerability Title
MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol
Source: CVE Program / CVE List V5
Vulnerability Description
From Apache NiFi MiNiFi C++ version 0.5.0 the c2 protocol implements an "agent-update" command which was designed to patch the application binary. This "patching" command defaults to calling a trusted binary, but might be modified to an arbitrary value through a "c2-update" command. Said command is then executed using the same privileges as the application binary. This was addressed in version 0.10.0
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache NiFi 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache NiFi是美国阿帕奇（Apache）基金会的一套数据处理和分发系统。该系统主要用于数据路由、转换和系统中介逻辑。 Apache NiFi MiNiFi C++ version 0.5.0之前版本存在安全漏洞，攻击者可以通过c2协议在代理主机上执行CPP任意脚本。
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
Apache Software Foundation Apache NiFi - MiNiFi C++ 0.5.0 ~ Apache NiFi - MiNiFi C++* -

II. Public POCs for CVE-2021-33191

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III. Intelligence Information for CVE-2021-33191

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Mailing List Discussions for CVE-2021-33191 (3)

IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-78

V. Comments for CVE-2021-33191

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