CVE-2019-17427 : Vulnerability Insights and Analysis

Persistent cross-site scripting (XSS) vulnerabilities exist in Redmine versions prior to 3.4.11 and 4.0.x before 4.0.4 due to errors in the textile formatting feature.

Understanding CVE-2019-17427

This CVE involves persistent XSS vulnerabilities in specific versions of Redmine, potentially exposing users to security risks.

What is CVE-2019-17427?

Persistent cross-site scripting (XSS) vulnerabilities can be found in Redmine versions prior to 3.4.11 and 4.0.x before 4.0.4. These vulnerabilities arise from errors in the textile formatting feature.

The Impact of CVE-2019-17427

Attackers can exploit these vulnerabilities to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions.
This could result in sensitive data exposure, unauthorized access, and other security breaches.

Technical Details of CVE-2019-17427

Persistent XSS vulnerabilities in Redmine versions prior to 3.4.11 and 4.0.x before 4.0.4.

Vulnerability Description

In Redmine before 3.4.11 and 4.0.x before 4.0.4, persistent XSS exists due to textile formatting errors.

Affected Systems and Versions

Redmine versions prior to 3.4.11
Redmine 4.0.x before 4.0.4

Exploitation Mechanism

Attackers can craft malicious scripts and inject them into vulnerable Redmine instances through the textile formatting feature.

Mitigation and Prevention

Immediate Steps to Take

Update Redmine to version 3.4.11 or 4.0.4 to mitigate the XSS vulnerabilities.
Regularly monitor and audit user-generated content for suspicious scripts. Long-Term Security Practices
Educate users on safe browsing practices and the risks of executing untrusted scripts.
Implement content security policies to prevent script execution from untrusted sources.
Stay informed about security updates and patches released by Redmine.