CVE-2021-31904 : Exploit Details and Defense Strategies

JetBrains TeamCity before 2020.2.2 is affected by a Cross-Site Scripting (XSS) vulnerability that could potentially allow XSS attacks on the test history page.

Understanding CVE-2021-31904

This section delves into the details of the CVE-2021-31904 vulnerability.

What is CVE-2021-31904?

CVE-2021-31904 is an XSS vulnerability in JetBrains TeamCity before version 2020.2.2 that could enable malicious actors to execute arbitrary scripts on the test history page.

The Impact of CVE-2021-31904

The impact of this vulnerability could range from unauthorized access to sensitive data to complete system compromise, posing significant risks to affected systems.

Technical Details of CVE-2021-31904

Explore the technical aspects of CVE-2021-31904 in this section.

Vulnerability Description

The XSS vulnerability in JetBrains TeamCity could be exploited to inject malicious scripts into the test history page, leading to potential security breaches.

Affected Systems and Versions

All versions of JetBrains TeamCity prior to 2020.2.2 are affected by CVE-2021-31904, making them susceptible to XSS attacks.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by crafting and injecting specially designed scripts into the vulnerable test history page, thereby gaining unauthorized access.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-31904 in this section.

Immediate Steps to Take

Immediately update JetBrains TeamCity to version 2020.2.2 or later to patch the XSS vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implement robust security measures such as input validation, output encoding, and security headers to bolster the overall security posture of your systems.

Patching and Updates

Regularly monitor security bulletins and apply necessary patches and updates to stay protected against emerging vulnerabilities like CVE-2021-31904.