CVE-2021-25773 : Security Advisory and Response
Learn about CVE-2021-25773 affecting JetBrains TeamCity before 2020.2 with a reflected XSS vulnerability. Understand the impact, technical details, and mitigation steps.
JetBrains TeamCity before 2020.2 was vulnerable to reflected XSS on several pages.
Understanding CVE-2021-25773
A security vulnerability, CVE-2021-25773, affects JetBrains TeamCity prior to version 2020.2 by enabling reflected XSS attacks on multiple pages.
What is CVE-2021-25773?
CVE-2021-25773 is a vulnerability present in JetBrains TeamCity before version 2020.2 that allows for reflected cross-site scripting (XSS) attacks on various pages within the application.
The Impact of CVE-2021-25773
The vulnerability posed by CVE-2021-25773 could potentially allow malicious actors to execute arbitrary scripts in the context of the user's session, leading to various security risks and potential data breaches.
Technical Details of CVE-2021-25773
CVE-2021-25773 manifests as a reflected XSS vulnerability within JetBrains TeamCity. Here are some key technical details:
Vulnerability Description
The vulnerability in JetBrains TeamCity allows attackers to inject and execute malicious scripts within the user's browser when visiting certain pages, potentially leading to unauthorized access or data theft.
Affected Systems and Versions
The affected systems are those running JetBrains TeamCity versions prior to 2020.2. Users of these versions are at risk of exploitation if proper mitigation measures are not implemented.
Exploitation Mechanism
Exploiting CVE-2021-25773 involves crafting a specifically designed link that, when clicked by a user on an affected page, triggers the execution of the malicious script in the user's context.
Mitigation and Prevention
To safeguard your systems from CVE-2021-25773 and similar vulnerabilities, it is crucial to take immediate protective measures.
Immediate Steps to Take
Users should update their JetBrains TeamCity installations to version 2020.2 or later to mitigate the risk of exploitation. It is also advisable to apply any relevant security patches provided by the vendor.
Long-Term Security Practices
Regularly monitoring for security advisories and staying up-to-date with software updates can help prevent such vulnerabilities from being exploited in the future.
Patching and Updates
Always prioritize applying security patches and software updates promptly to address known vulnerabilities and strengthen the overall security posture of your systems.