CVE-2020-35131 Explained : Impact and Mitigation

Cockpit before 0.6.1 allows an attacker to inject custom PHP code and achieve Remote Command Execution via registerCriteriaFunction in lib/MongoLite/Database.php.

Understanding CVE-2020-35131

This CVE involves a vulnerability in Cockpit that enables an attacker to execute remote commands by injecting PHP code.

What is CVE-2020-35131?

Cockpit versions prior to 0.6.1 are susceptible to a security flaw that permits an attacker to insert malicious PHP code, leading to Remote Command Execution. The vulnerability arises from improper handling of user input in the registerCriteriaFunction within lib/MongoLite/Database.php.

The Impact of CVE-2020-35131

Exploitation of this vulnerability can result in an attacker executing arbitrary commands on the target system, potentially compromising its integrity and confidentiality.

Technical Details of CVE-2020-35131

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in Cockpit before version 0.6.1 allows an attacker to inject custom PHP code, leading to Remote Command Execution via the registerCriteriaFunction in lib/MongoLite/Database.php. Attackers can achieve this by manipulating values in JSON data sent to specific URIs.

Affected Systems and Versions

Affected Version: Cockpit before 0.6.1
Systems: Any system running the vulnerable versions of Cockpit

Exploitation Mechanism

The vulnerability can be exploited by sending crafted JSON data to the /auth/check or /auth/requestreset URI, allowing an attacker to execute arbitrary PHP code remotely.

Mitigation and Prevention

Protecting systems from CVE-2020-35131 requires immediate action and long-term security measures.

Immediate Steps to Take

Update Cockpit to version 0.6.1 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activity.
Implement strict input validation to prevent code injection attacks.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses.
Educate users and administrators about secure coding practices and the risks of code injection.

Patching and Updates

Ensure timely installation of security patches and updates for Cockpit to address known vulnerabilities and enhance system security.