CVE-2020-1928: Insertion of Sensitive Information into Log File in Apache NiFi

org.apache.nifi:nifi-parameter Updated 02 Oct 2025

Summary

06/01/2022

Disclosed on

CVE-2020-1928

CVE

Yes i

Fix available

Moderate

Severity

5.3

CVSS Score

CVE-2020-1928: Apache NiFi Insertion of Sensitive Information into Log File. Affects org.apache.nifi:nifi-parameter versions >= 1.10.0, < 1.11.0. Fixed in 1.11.0. How to fix ↓

Also tracked for

nifi · Bitnami

The same CVE-2020-1928 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.

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Background

Apache NiFi is an open-source data integration tool that enables the automation of data flow between systems. It provides a web-based user interface for designing, managing, and monitoring data flows. NiFi is built on the concepts of flow-based programming and provides a wide range of processors, controllers, and services to facilitate data integration tasks. However, a vulnerability has been discovered in Apache NiFi version 1.10.0 that allows for the insertion of sensitive information into log files.

Vulnerability Detail

The vulnerability in Apache NiFi 1.10.0 involves the sensitive parameter parser, which logs parsed values for debugging purposes. This logging behavior exposes literal values entered in a sensitive property when no parameter is present. An attacker with access to the log files could potentially extract sensitive information, such as passwords or API keys, leading to unauthorized access or data breaches. The vulnerability has a CVSS score of 5.3, indicating a moderate severity level.

How To Fix

Minimum fixed version

1.11.0

This is the first release that contains the fix.

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Workaround

As a workaround, users can manually modify the Apache NiFi configuration to disable logging of sensitive information. This can be achieved by adjusting the log levels or configuring log filters to exclude sensitive properties. Here is an example of how to modify the logback.xml configuration file to exclude sensitive properties:

<configuration>
  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>/path/to/log/file.log</file>

<encoder>

      <pattern>%d{yyyy-MM-dd HH:mm:ss} %-5level %logger{36} - %msg%n</pattern>
    </encoder>
    <filter class="ch.qos.logback.core.filter.EvaluatorFilter">
      <evaluator>
        <expression>!contains(message, 'sensitive_property')</expression>
      </evaluator>
      <OnMismatch>DENY</OnMismatch>
      <OnMatch>NEUTRAL</OnMatch>

</filter>

  </appender>

...

</configuration>

Conclusion

In conclusion, Apache NiFi version 1.10.0 is vulnerable to the insertion of sensitive information into log files. To mitigate this vulnerability, it is crucial to upgrade to Apache NiFi version 1.11.0-RC1 or later. Alternatively, users can implement a workaround by modifying the Apache NiFi configuration to exclude logging of sensitive properties. For further assistance or support in vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for org.apache.nifi:nifi-parameter →