CVE-2021-29274 : Exploit Details and Defense Strategies

Redmine 4.1.x before 4.1.2 is affected by a Cross-Site Scripting (XSS) vulnerability due to mishandling of an issue's subject in the auto complete tip.

Understanding CVE-2021-29274

This CVE identifies a security issue in Redmine, version 4.1.x before 4.1.2, that can be exploited through XSS.

What is CVE-2021-29274?

The CVE-2021-29274 vulnerability in Redmine 4.1.x before 4.1.2 arises from the improper handling of an issue's subject within the auto complete tip, allowing malicious actors to execute XSS attacks.

The Impact of CVE-2021-29274

This vulnerability could enable attackers to inject malicious scripts into the web application, potentially leading to unauthorized access, data theft, or other harmful activities.

Technical Details of CVE-2021-29274

This section covers detailed technical information regarding the CVE.

Vulnerability Description

Redmine 4.1.x before 4.1.2 is susceptible to XSS attacks as a result of mishandling an issue's subject during auto complete suggestions.

Affected Systems and Versions

The vulnerability affects Redmine versions 4.1.x before 4.1.2.

Exploitation Mechanism

The vulnerability can be exploited by manipulating the subject of an issue to execute arbitrary scripts within the application.

Mitigation and Prevention

Here are some steps to mitigate and prevent exploitation of this vulnerability.

Immediate Steps to Take

Users and administrators should update Redmine to version 4.1.2 or newer to patch the XSS vulnerability and prevent potential attacks.

Long-Term Security Practices

Implementing secure coding practices, input validation mechanisms, and regular security audits can help prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security updates and apply patches promptly to keep Redmine secure from known vulnerabilities.