CVE-2020-9486 Explained : Impact and Mitigation

Apache NiFi 1.10.0 to 1.11.4 exposes sensitive property values in log output, potentially leading to information disclosure.

Understanding CVE-2020-9486

In Apache NiFi versions 1.10.0 to 1.11.4, a vulnerability exists that allows sensitive data to be exposed in log output, posing a risk of information disclosure.

What is CVE-2020-9486?

This CVE refers to a security issue in Apache NiFi versions 1.10.0 to 1.11.4 where the stateless execution engine logs sensitive property values, potentially revealing confidential information.

The Impact of CVE-2020-9486

The vulnerability can result in the exposure of sensitive data, including plaintext values, when flow definitions are triggered, leading to potential information leaks.

Technical Details of CVE-2020-9486

Apache NiFi 1.10.0 to 1.11.4 vulnerability details:

Vulnerability Description

The stateless execution engine in Apache NiFi logs sensitive property values.
Flow definition configuration JSON may contain plaintext sensitive values.

Affected Systems and Versions

Product: Apache NiFi
Versions: 1.10.0 to 1.11.4

Exploitation Mechanism

Attackers can exploit this vulnerability by accessing the log output containing sensitive property values.

Mitigation and Prevention

Steps to address CVE-2020-9486:

Immediate Steps to Take

Upgrade Apache NiFi to a non-vulnerable version.
Review and restrict access to log files containing sensitive data.

Long-Term Security Practices

Implement encryption for sensitive property values in log output.
Regularly monitor and audit log files for any unauthorized access.

Patching and Updates

Apply security patches provided by Apache NiFi to fix the vulnerability.