CVE-2023-39521 Explained : Impact and Mitigation
Learn about CVE-2023-39521, a critical Cross-site Scripting vulnerability in Tuleap allowing attackers to execute uncontrolled code. Find out about impacts, affected versions, and mitigation steps.
A Cross-site Scripting vulnerability affecting Tuleap has been identified, allowing attackers to execute uncontrolled code. Here's what you need to know.
Understanding CVE-2023-39521
This vulnerability in Tuleap could be exploited by attackers to inject and execute malicious code, posing a significant security risk.
What is CVE-2023-39521?
Tuleap, an open-source software development and collaboration suite, is susceptible to Cross-site Scripting due to improper neutralization of input. Versions prior to Tuleap Community Edition 14.11.99.28 and Tuleap Enterprise Edition 14.10-6 are affected.
The Impact of CVE-2023-39521
The vulnerability allows an attacker to manipulate data displayed in the kanban interface, potentially leading to the execution of unauthorized code. This could result in sensitive data exposure, integrity issues, and unauthorized system access.
Technical Details of CVE-2023-39521
This section delves into the specifics of the vulnerability, including how it can be exploited and the systems impacted.
Vulnerability Description
In Tuleap versions prior to 14.11.99.28 and 14.10-6, improper escaping of content in card fields can be leveraged by an agile dashboard administrator deleting a kanban with a malicious label to execute uncontrolled code.
Affected Systems and Versions
- Tuleap Community Edition < 14.11.99.28
- Tuleap Enterprise Edition < 14.10-6
- Tuleap Enterprise Edition >= 14.11, < 14.11-3
Exploitation Mechanism
Attackers can exploit this vulnerability by inserting malicious code into card fields, manipulating the kanban interface, and tricking administrators into executing the code unknowingly.
Mitigation and Prevention
To safeguard systems from CVE-2023-39521, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
- Upgrade to Tuleap Community Edition 14.11.99.28 or above
- Upgrade to Tuleap Enterprise Edition 14.10-6 or above
- Implement input validation mechanisms
Long-Term Security Practices
- Regular security audits and testing
- Employee training on secure coding practices
Patching and Updates
Ensure timely installation of patches and updates provided by Tuleap to address and mitigate the Cross-site Scripting vulnerability.