CVE-2019-12840 : What You Need to Know
Learn about CVE-2019-12840, a Webmin vulnerability allowing unauthorized users to execute commands as root. Find mitigation steps and preventive measures here.
Webmin version 1.910 and earlier allow users with access to the "Package Updates" module to execute arbitrary commands as the root user.
Understanding CVE-2019-12840
Webmin vulnerability enabling unauthorized command execution.
What is CVE-2019-12840?
Users with specific module access can run commands as root by manipulating the data parameter in the update.cgi script.
The Impact of CVE-2019-12840
This exploit grants unauthorized users root-level access, posing a severe security risk to the system.
Technical Details of CVE-2019-12840
Details of the vulnerability in Webmin version 1.910.
Vulnerability Description
Unauthorized users can execute commands with root privileges via the data parameter in update.cgi.
Affected Systems and Versions
- Webmin version 1.910 and earlier
Exploitation Mechanism
- Users manipulate the data parameter in the update.cgi script to execute arbitrary commands as the root user.
Mitigation and Prevention
Protecting systems from CVE-2019-12840.
Immediate Steps to Take
- Disable access to the "Package Updates" module for unauthorized users.
- Monitor system logs for any suspicious activities.
Long-Term Security Practices
- Regularly update Webmin to the latest version.
- Implement the principle of least privilege to restrict user access.
- Conduct security audits and penetration testing to identify vulnerabilities.
Patching and Updates
- Apply patches provided by Webmin to address the vulnerability.