CVE-2020-6143 : Security Advisory and Response

A remote code execution vulnerability exists in the install functionality of OS4Ed openSIS 7.4. The password variable allows for injection of PHP code into the Data.php file, enabling an attacker to trigger this vulnerability through an HTTP request.

Understanding CVE-2020-6143

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

What is CVE-2020-6143?

CVE-2020-6143 is a security flaw in OS4Ed openSIS 7.4 that permits remote attackers to execute arbitrary PHP code by manipulating the password variable in the install/Step5.php file.

The Impact of CVE-2020-6143

The vulnerability has a CVSS base score of 10 (Critical) with high impacts on confidentiality, integrity, and availability. It requires no special privileges for exploitation and can be triggered over a network.

Technical Details of CVE-2020-6143

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The flaw allows attackers to inject PHP code into the Data.php file by exploiting the password variable in the install/Step5.php script.

Affected Systems and Versions

Product: OS4Ed
Version: OS4Ed openSIS 7.4

Exploitation Mechanism

The vulnerability can be exploited by sending a crafted HTTP request to the target system, triggering the execution of malicious PHP code.

Mitigation and Prevention

Protecting systems from CVE-2020-6143 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly to mitigate the vulnerability.
Restrict network access to vulnerable systems to reduce the attack surface.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Implement strong input validation mechanisms to prevent code injection attacks.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Regularly check for security updates from the vendor and apply them as soon as they are available to ensure protection against known vulnerabilities.