CVE-2021-20654 : Exploit Details and Defense Strategies

A detailed overview of CVE-2021-20654, focusing on the vulnerabilities present in Wekan versions 3.12 to 4.11.

Understanding CVE-2021-20654

This section delves into the specifics of the CVE-2021-20654 vulnerability affecting Wekan.

What is CVE-2021-20654?

Wekan, an open-source kanban board system, is susceptible to multiple instances of stored cross-site scripting between versions 3.12 and 4.11. The vulnerability dubbed 'Fieldbleed' on the vendor's site.

The Impact of CVE-2021-20654

The presence of stored cross-site scripting vulnerabilities in Wekan versions 3.12 to 4.11 can lead to severe security ramifications, potentially allowing attackers to execute malicious scripts within the application environment.

Technical Details of CVE-2021-20654

Explore the technical aspects underlying CVE-2021-20654 to grasp the intricacies of this security issue.

Vulnerability Description

The vulnerability in Wekan versions 3.12 to 4.11 exposes users to stored cross-site scripting attacks, enabling threat actors to inject and execute malicious scripts within the application.

Affected Systems and Versions

Wekan versions 3.12 to 4.11 have been identified as susceptible to the 'Fieldbleed' stored cross-site scripting vulnerability, impacting users operating these specific versions.

Exploitation Mechanism

This vulnerability can be exploited by injecting malicious scripts into fields within Wekan, potentially leading to unauthorized access or data theft.

Mitigation and Prevention

Discover the essential steps to mitigate and prevent the risks associated with CVE-2021-20654.

Immediate Steps to Take

Users are advised to update their Wekan installations to versions beyond 4.11 to eliminate the stored cross-site scripting vulnerabilities present in versions 3.12 to 4.11.

Long-Term Security Practices

Implementing a robust web application security strategy, including regular security audits and patch management, is crucial to mitigate the risks of stored cross-site scripting vulnerabilities.

Patching and Updates

Stay informed about security patches and updates released by Wekan Team to address vulnerabilities like 'Fieldbleed' and ensure the timely application of these patches to maintain a secure environment.