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CVE-2021-44145— Apache NiFi information disclosure by XXE

Quick assessment

Affected
Apache Software Foundation Apache NiFi
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.

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 的 TransformXML 存在信息泄露漏洞，该漏洞源于在1.15.1之前的Apache NiFi的TransformXML处理器中，经过身份验证的用户可以配置XSLT文件，如果该文件包含恶意的外部实体调用，可能会暴露敏感信息。

AI Predicted 7.5 Difficulty: Moderate EPSS 1.70% · P76

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-44145

Vulnerability Information
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Vulnerability Title
Apache NiFi information disclosure by XXE
Source: CVE Program / CVE List V5
Vulnerability Description
In the TransformXML processor of Apache NiFi before 1.15.1 an authenticated user could configure an XSLT file which, if it included malicious external entity calls, may reveal sensitive information.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache NiFi 信息泄露漏洞
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 的 TransformXML 存在信息泄露漏洞，该漏洞源于在1.15.1之前的Apache NiFi的TransformXML处理器中，经过身份验证的用户可以配置XSLT文件，如果该文件包含恶意的外部实体调用，可能会暴露敏感信息。
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
Apache Software Foundation Apache NiFi Apache NiFi ~ 1.15.0 -

II. Public POCs for CVE-2021-44145

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III. Intelligence Information for CVE-2021-44145

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Mailing List Discussions for CVE-2021-44145 (1)

Other References for CVE-2021-44145 (1)

IV. Related Vulnerabilities

Same product: Apache NiFi
Same vendor: Apache Software Foundation

V. Comments for CVE-2021-44145

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