CVE-2017-1000392 : Vulnerability Insights and Analysis
Learn about CVE-2017-1000392, a cross-site scripting vulnerability in Jenkins versions 2.88 and earlier, impacting autocomplete suggestions for text fields. Find mitigation steps and best practices here.
Jenkins versions 2.88 and earlier, as well as 2.73.2 and earlier, are vulnerable to a cross-site scripting issue due to improper escaping of autocomplete suggestions for text fields.
Understanding CVE-2017-1000392
This CVE involves a security vulnerability in Jenkins that could allow for cross-site scripting attacks.
What is CVE-2017-1000392?
This CVE pertains to a flaw in Jenkins versions 2.88 and earlier, as well as 2.73.2 and earlier, where autocomplete suggestions for text fields were not properly escaped, potentially leading to a cross-site scripting vulnerability.
The Impact of CVE-2017-1000392
The vulnerability could be exploited by an attacker to execute malicious scripts in the context of a user's browser, leading to various attacks such as stealing sensitive information or performing unauthorized actions.
Technical Details of CVE-2017-1000392
Jenkins Autocompletion Vulnerability
Vulnerability Description
The issue arises from the failure to escape HTML metacharacters like less-than and greater-than characters in autocomplete suggestions for text fields in affected Jenkins versions.
Affected Systems and Versions
- Jenkins versions 2.88 and earlier
- Jenkins versions 2.73.2 and earlier
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting malicious scripts into the autocomplete suggestions, which, when executed, can lead to cross-site scripting attacks.
Mitigation and Prevention
Steps to Address CVE-2017-1000392
Immediate Steps to Take
- Upgrade Jenkins to a non-vulnerable version immediately.
- Disable autocomplete suggestions if not essential to operations.
- Regularly monitor and audit Jenkins configurations for security best practices.
Long-Term Security Practices
- Educate users on safe coding practices to prevent cross-site scripting vulnerabilities.
- Implement input validation mechanisms to sanitize user inputs effectively.
- Stay informed about security advisories and promptly apply patches and updates.
Patching and Updates
Ensure timely installation of security patches and updates released by Jenkins to address the vulnerability.