CVE-2020-6144 : Exploit Details and Defense Strategies

A remote code execution vulnerability exists in the install functionality of OS4Ed openSIS 7.4, allowing injection of PHP code into the Data.php file.

Understanding CVE-2020-6144

This CVE involves a critical remote code execution vulnerability in OS4Ed openSIS 7.4.

What is CVE-2020-6144?

The vulnerability allows an attacker to inject PHP code into the Data.php file via the username variable in install/Step5.php.
Attackers can exploit this by sending an HTTP request to trigger the vulnerability.

The Impact of CVE-2020-6144

CVSS Base Score: 10 (Critical)
Attack Vector: Network
Attack Complexity: Low
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Privileges Required: None
Scope: Changed
User Interaction: None
CVE Type: CWE-96: Static Code Injection

Technical Details of CVE-2020-6144

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows remote code execution by injecting PHP code into the Data.php file.

Affected Systems and Versions

Product: OS4Ed
Version: OS4Ed openSIS 7.4

Exploitation Mechanism

Attackers exploit the vulnerability by manipulating the username variable in install/Step5.php to inject malicious PHP code.

Mitigation and Prevention

Protect your systems from CVE-2020-6144 with the following steps:

Immediate Steps to Take

Disable the install functionality in OS4Ed openSIS 7.4 if not in use.
Implement strict input validation to prevent code injection.
Monitor and filter incoming HTTP requests for suspicious activity.

Long-Term Security Practices

Regularly update and patch OS4Ed openSIS to the latest version.
Conduct security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply security patches provided by OS4Ed promptly to address this vulnerability.