CVE-2021-39059 : Exploit Details and Defense Strategies

IBM Jazz Team Server versions 6.0.6, 6.0.6.1, 7.0, 7.0.1, and 7.0.2 are vulnerable to cross-site scripting, potentially leading to credential disclosure within trusted sessions.

Understanding CVE-2021-39059

IBM Jazz Team Server is at risk of cross-site scripting, allowing the injection of malicious JavaScript into the Web UI, which can modify intended functions.

What is CVE-2021-39059?

The vulnerability in IBM Jazz Team Server versions 6.0.6, 6.0.6.1, 7.0, 7.0.1, and 7.0.2 permits embedding arbitrary JavaScript code that could alter the Web UI's functionality, leading to potential credentials exposure within trusted sessions.

The Impact of CVE-2021-39059

This vulnerability poses a medium-severity risk with a CVSS base score of 5.4, allowing attackers to execute arbitrary JavaScript code within a trusted session, potentially compromising sensitive data.

Technical Details of CVE-2021-39059

IBM Jazz Team Server's vulnerability to cross-site scripting has the following technical details:

Vulnerability Description

The cross-site scripting vulnerability in IBM Jazz Team Server versions permits the injection of unauthorized JavaScript code that can manipulate the behavior of the Web UI.

Affected Systems and Versions

IBM Jazz Team Server 6.0.6
IBM Jazz Team Server 6.0.6.1
IBM Jazz Team Server 7.0
IBM Jazz Team Server 7.0.1
IBM Jazz Team Server 7.0.2

Exploitation Mechanism

The vulnerability requires low privileges and user interaction to exploit, with high exploit code maturity and confirmed report confidence.

Mitigation and Prevention

To address CVE-2021-39059, consider the following mitigation strategies:

Immediate Steps to Take

Apply the official fix provided by IBM.
Regularly monitor for abnormal activities or malicious scripts in the Web UI.

Long-Term Security Practices

Implement strict input validation mechanisms within the Web UI.
Educate users on the risks of executing untrusted scripts.

Patching and Updates

Ensure timely installation of security patches and updates provided by IBM to remediate the cross-site scripting vulnerability in Jazz Team Server.