CVE-2022-29265 : What You Need to Know

Apache NiFi versions 0.0.1 to 1.16.0 are impacted by the CVE-2022-29265 vulnerability due to improper restriction of XML External Entity references. This vulnerability allows malicious XML documents to exploit the affected components in Apache NiFi, potentially leading to security breaches.

Understanding CVE-2022-29265

This CVE highlights a critical issue in which several components in Apache NiFi do not adequately restrict XML External Entity references, making them vulnerable to malicious XML file exploitation.

What is CVE-2022-29265?

Multiple components in Apache NiFi versions 0.0.1 to 1.16.0 are susceptible to malicious XML documents due to the lack of restrictions on XML External Entity references. This vulnerability can potentially expose systems to security risks and unauthorized access.

The Impact of CVE-2022-29265

The vulnerability in Apache NiFi allows attackers to craft malicious XML documents containing Document Type Declarations with XML External Entity references. By exploiting this flaw, unauthorized parties can potentially access sensitive information and compromise the security of affected systems.

Technical Details of CVE-2022-29265

The following technical aspects shed light on the vulnerability in Apache NiFi:

Vulnerability Description

Apache NiFi components from version 0.0.1 to 1.16.0 do not restrict XML External Entity references in the default configuration. This opens up the system to malicious XML files that can exploit the vulnerability.

Affected Systems and Versions

The CVE-2022-29265 vulnerability impacts Apache NiFi versions ranging from 0.0.1 to 1.16.0. Systems with these versions are at risk of exploitation through malicious XML documents.

Exploitation Mechanism

The Standard Content Viewer service in Apache NiFi attempts to resolve XML External Entity references, making it susceptible to malicious XML files with embedded Document Type Declarations.

Mitigation and Prevention

To address the CVE-2022-29265 vulnerability in Apache NiFi, consider the following mitigation strategies:

Immediate Steps to Take

Disabling the Validate DTD Processor Property in EvaluateXPath and EvaluateXQuery can help mitigate the vulnerability for those specific Processors. However, there is currently no available mitigation for the ValidateXml Processor or the Standard Content Viewer.

Long-Term Security Practices

It is crucial to regularly update Apache NiFi to patched versions and apply security updates promptly to mitigate known vulnerabilities.

Patching and Updates

Ensure that Apache NiFi is updated to the latest version that addresses the CVE-2022-29265 vulnerability. Stay informed about security advisories and apply recommended patches to enhance system security.