CVE-2020-25538 : Security Advisory and Response

CVE-2020-25538, published on 2020-11-13, involves a remote code execution vulnerability in CMSuno 1.6.2 that allows an authenticated attacker to inject and execute malicious PHP code.

Understanding CVE-2020-25538

This CVE entry details a critical security issue in CMSuno 1.6.2 that can lead to a complete server takeover by an attacker.

What is CVE-2020-25538?

An authenticated attacker can exploit a vulnerability in the 'lang' parameter of the /uno/central.php file in CMSuno 1.6.2 to inject and execute malicious PHP code on the web page.

The Impact of CVE-2020-25538

The vulnerability allows attackers to take control of the server, posing a significant risk to the integrity and security of the affected system.

Technical Details of CVE-2020-25538

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

Vulnerability Description

The flaw enables an attacker to insert and run PHP code via the 'lang' parameter in the specified file, leading to unauthorized server control.

Affected Systems and Versions

Affected Version: CMSuno 1.6.2
Systems running this specific version are vulnerable to exploitation.

Exploitation Mechanism

An authenticated attacker can manipulate the 'lang' parameter to inject and execute malicious PHP code.

Mitigation and Prevention

Protecting systems from CVE-2020-25538 requires immediate action and long-term security measures.

Immediate Steps to Take

Update CMSuno to a patched version that addresses the vulnerability.
Monitor server logs for any suspicious activities.
Implement strict access controls to limit the impact of potential attacks.

Long-Term Security Practices

Regularly audit and review code for vulnerabilities.
Conduct security training for developers and administrators.
Employ web application firewalls to filter and monitor incoming traffic.

Patching and Updates

Apply security patches provided by CMSuno promptly to mitigate the risk of exploitation.