CVE-2020-35606 Explained : Impact and Mitigation

Webmin through 1.962 allows arbitrary command execution, enabling users with Package Updates module access to execute commands with root privileges through specific vectors. This vulnerability is due to an incomplete fix for CVE-2019-12840.

Understanding CVE-2020-35606

Webmin vulnerability allowing arbitrary command execution.

What is CVE-2020-35606?

CVE-2020-35606 is a security vulnerability in Webmin versions up to 1.962 that permits users authorized for the Package Updates module to run arbitrary commands with root privileges using specific vectors.

The Impact of CVE-2020-35606

This vulnerability can lead to unauthorized users executing commands with elevated privileges, potentially compromising the system's security and integrity.

Technical Details of CVE-2020-35606

Webmin arbitrary command execution vulnerability details.

Vulnerability Description

Arbitrary command execution can occur in Webmin through version 1.962, allowing users with Package Updates module access to execute commands with root privileges via specific vectors.

Affected Systems and Versions

Webmin versions up to 1.962

Exploitation Mechanism

Users authorized for the Package Updates module can exploit this vulnerability using vectors involving %0A and %0C.

Mitigation and Prevention

Steps to mitigate and prevent CVE-2020-35606.

Immediate Steps to Take

Disable access to the Package Updates module for untrusted users.
Implement network segmentation to limit access to vulnerable systems.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Regularly update Webmin to the latest secure version.
Conduct security training for users to recognize and report suspicious activities.
Implement strong password policies and multi-factor authentication.

Patching and Updates

Apply patches and updates provided by Webmin to address the vulnerability and enhance system security.