CVE-2017-1000391 Explained : Impact and Mitigation
Learn about CVE-2017-1000391 affecting Jenkins versions 2.88 and earlier, allowing attackers to overwrite configuration files. Find mitigation steps and update recommendations here.
Jenkins versions 2.88 and earlier store metadata related to 'people' on disk, potentially leading to issues like overwriting unrelated configuration files.
Understanding CVE-2017-1000391
Jenkins versions 2.88 and earlier and 2.73.2 and earlier store metadata related to 'people' on disk, which could result in security vulnerabilities.
What is CVE-2017-1000391?
Jenkins versions 2.88 and earlier and 2.73.2 and earlier store metadata related to 'people' on disk, using the user ID as directory names without proper escaping, posing a risk of overwriting unrelated configuration files.
The Impact of CVE-2017-1000391
The vulnerability could allow attackers to overwrite unrelated configuration files, potentially leading to unauthorized access or system instability.
Technical Details of CVE-2017-1000391
Jenkins versions 2.88 and earlier and 2.73.2 and earlier are affected by this vulnerability.
Vulnerability Description
The storage of metadata in Jenkins versions 2.88 and earlier and 2.73.2 and earlier, related to 'people', could lead to overwriting unrelated configuration files due to the use of user IDs as directory names without proper escaping.
Affected Systems and Versions
- Jenkins versions 2.88 and earlier
- Jenkins versions 2.73.2 and earlier
Exploitation Mechanism
Attackers could exploit this vulnerability by manipulating the metadata storage directories to overwrite critical configuration files.
Mitigation and Prevention
Immediate Steps to Take:
- Update Jenkins to the latest version that includes a patch for this vulnerability
- Monitor system logs for any suspicious activities related to file overwriting
Long-Term Security Practices:
- Regularly review and update Jenkins configurations and security settings
- Implement access controls to restrict unauthorized access to Jenkins
- Conduct security audits to identify and address potential vulnerabilities
Patching and Updates
Ensure timely installation of security patches and updates provided by Jenkins to mitigate the risk of this vulnerability.