CVE-2017-1000401 Explained : Impact and Mitigation
Learn about CVE-2017-1000401 affecting Jenkins versions 2.73.1 and earlier, 2.83 and earlier. Find out how the vulnerability exposed secrets in HTTP access logs and the mitigation steps.
In earlier versions of Jenkins, a vulnerability existed in the default form control for passwords and secrets, potentially exposing them in HTTP access logs. This issue has been addressed by modifying the form validation method.
Understanding CVE-2017-1000401
This CVE highlights a security vulnerability in Jenkins versions 2.73.1 and earlier, as well as 2.83 and earlier.
What is CVE-2017-1000401?
The default form control for passwords and secrets in Jenkins had a form validation process using GET requests, which could lead to secrets being logged in HTTP access logs in specific configurations, making them accessible to users with log file access.
The Impact of CVE-2017-1000401
The vulnerability could potentially expose sensitive information, such as API keys, to unauthorized users with access to log files, compromising the security and confidentiality of the system.
Technical Details of CVE-2017-1000401
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The default form control <f:password/> in Jenkins allowed form validation via GET requests, risking the exposure of secrets in HTTP access logs. The issue has been mitigated by changing the form validation method to use POST requests.
Affected Systems and Versions
- Jenkins versions 2.73.1 and earlier
- Jenkins versions 2.83 and earlier
Exploitation Mechanism
The vulnerability stemmed from the form validation process using GET requests, which could inadvertently log sensitive information in HTTP access logs, potentially compromising security.
Mitigation and Prevention
To address and prevent the exploitation of CVE-2017-1000401, the following steps are recommended:
Immediate Steps to Take
- Update Jenkins to the latest version that includes the fix for this vulnerability.
- Monitor and restrict access to log files containing sensitive information.
Long-Term Security Practices
- Regularly review and update security configurations in Jenkins.
- Educate users on secure practices for handling sensitive data.
Patching and Updates
- Apply patches and updates provided by Jenkins to ensure the security of the system.