CVE-2021-43197 : Vulnerability Insights and Analysis
Learn about CVE-2021-43197, a security flaw in JetBrains TeamCity allowing XSS attacks via email notifications. Find mitigation steps and updates here.
In JetBrains TeamCity before 2021.1.2, email notifications could include unescaped HTML for XSS.
Understanding CVE-2021-43197
In this CVE, JetBrains TeamCity prior to version 2021.1.2 is vulnerable to XSS through unescaped HTML in email notifications.
What is CVE-2021-43197?
CVE-2021-43197 refers to a security vulnerability in JetBrains TeamCity that could allow attackers to execute cross-site scripting attacks through unescaped HTML in email notifications.
The Impact of CVE-2021-43197
This vulnerability could be exploited by malicious actors to inject and execute arbitrary HTML and scripts in the context of the user's browser.
Technical Details of CVE-2021-43197
In-depth technical information about the vulnerability.
Vulnerability Description
The issue occurs in JetBrains TeamCity versions prior to 2021.1.2, where email notifications fail to properly escape HTML, allowing for potential XSS attacks.
Affected Systems and Versions
- Product: JetBrains TeamCity
- Vendor: JetBrains
- Versions Affected: All versions before 2021.1.2
Exploitation Mechanism
Attackers can craft malicious email content with embedded HTML and scripts, which can then be executed when the email is viewed.
Mitigation and Prevention
Actions to mitigate and prevent exploitation of the vulnerability.
Immediate Steps to Take
- Upgrade JetBrains TeamCity to version 2021.1.2 or newer.
- Educate users about the risks of opening emails from untrusted sources.
Long-Term Security Practices
- Regularly update and patch software to the latest versions.
- Implement content security policies to prevent XSS attacks.
Patching and Updates
Apply security patches released by JetBrains promptly to fix the vulnerability.