CVE-2021-43202 : Vulnerability Insights and Analysis
Learn about CVE-2021-43202 affecting JetBrains TeamCity before 2021.1.3 due to a missing X-Frame-Options header, allowing potential clickjacking attacks. Find mitigation steps and security practices.
In JetBrains TeamCity before 2021.1.3, the X-Frame-Options header is missing in some cases.
Understanding CVE-2021-43202
In this CVE, JetBrains TeamCity before version 2021.1.3 is affected by the absence of the X-Frame-Options header in some instances.
What is CVE-2021-43202?
CVE-2021-43202 highlights a security vulnerability in JetBrains TeamCity where the X-Frame-Options header is not present in certain conditions, potentially exposing the application to clickjacking attacks.
The Impact of CVE-2021-43202
The absence of the X-Frame-Options header could allow attackers to embed the affected web application within an iframe on a malicious site, leading to potential exploitation of user interactions on the legitimate application.
Technical Details of CVE-2021-43202
CVE ID: CVE-2021-43202
Vulnerability Description
The vulnerability arises due to the missing X-Frame-Options header in JetBrains TeamCity before version 2021.1.3, enabling clickjacking attacks.
Affected Systems and Versions
- Product: JetBrains TeamCity
- Vendor: JetBrains
- Versions Affected: All versions before 2021.1.3
Exploitation Mechanism
Attackers can exploit this vulnerability by embedding the application in iframes on malicious sites, potentially leading to unauthorized actions on the application.
Mitigation and Prevention
For CVE-2021-43202, immediate action and long-term security practices are essential to mitigate risks and enhance overall security.
Immediate Steps to Take
- Update JetBrains TeamCity to version 2021.1.3 or later to ensure the X-Frame-Options header is correctly implemented.
- Monitor for any unauthorized access or malicious activities on the application.
Long-Term Security Practices
- Implement Content Security Policy (CSP) headers to restrict which sites can embed the application.
- Regularly review and update security configurations to address emerging threats.
Patching and Updates
- Regularly apply patches and updates provided by JetBrains to address security vulnerabilities promptly.