CVE-2019-25026 Explained : Impact and Mitigation

Redmine mishandles markup data during Textile formatting in versions earlier than 3.4.13 and 4.x before 4.0.6.

Understanding CVE-2019-25026

The vulnerability in Redmine allows for improper handling of markup data during Textile formatting, potentially leading to security risks.

What is CVE-2019-25026?

Redmine versions prior to 3.4.13 and 4.x before 4.0.6 do not properly handle markup data during Textile formatting, which could be exploited by attackers.

The Impact of CVE-2019-25026

This vulnerability could allow malicious actors to execute arbitrary code or conduct cross-site scripting attacks, compromising the security and integrity of the affected systems.

Technical Details of CVE-2019-25026

Redmine's vulnerability in handling markup data during Textile formatting has the following technical details:

Vulnerability Description

The issue arises from the improper handling of markup data during Textile formatting in Redmine versions earlier than 3.4.13 and 4.x prior to 4.0.6.

Affected Systems and Versions

Redmine versions before 3.4.13
Redmine 4.x versions prior to 4.0.6

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious markup data, which when processed by Redmine, could lead to code execution or XSS attacks.

Mitigation and Prevention

To address CVE-2019-25026 and enhance security measures, consider the following steps:

Immediate Steps to Take

Update Redmine to version 3.4.13 or 4.0.6, which contain fixes for this vulnerability.
Monitor and restrict user input to prevent the injection of malicious markup data.

Long-Term Security Practices

Regularly update and patch Redmine to the latest secure versions.
Educate users on safe data input practices to minimize the risk of code injection.
Implement web application firewalls to detect and block malicious input.

Patching and Updates

Apply security patches provided by Redmine promptly to address known vulnerabilities and enhance system security.