CVE-2018-14399 : Exploit Details and Defense Strategies

In the PHPCMS version 9.6.0, a vulnerability exists in the attachment.class.php file, allowing remote attackers to upload and execute unauthorized PHP code. The attack involves manipulating the SRC attribute of an IMG element within the info[content] JSON data.

Understanding CVE-2018-14399

This CVE-2018-14399 vulnerability was published on July 19, 2018.

What is CVE-2018-14399?

This CVE affects PHPCMS version 9.6.0, enabling remote attackers to upload and run unauthorized PHP code by exploiting a vulnerability in the attachment.class.php file.

The Impact of CVE-2018-14399

Remote attackers can upload and execute arbitrary PHP code on affected systems.
The vulnerability can be triggered by accessing a specific URI within the PHPCMS application.

Technical Details of CVE-2018-14399

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in libs\classes\attachment.class.php in PHPCMS 9.6.0 allows attackers to upload and execute PHP code via a crafted URI in the SRC attribute of an IMG element within the info[content] JSON data.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

The attack involves modifying the SRC attribute of an IMG element within the info[content] JSON data using a specific URI, triggering the vulnerability when accessing a particular URI in the PHPCMS application.

Mitigation and Prevention

Protecting systems from CVE-2018-14399 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches or updates provided by PHPCMS promptly.
Implement strict input validation to prevent malicious uploads.
Monitor and restrict access to sensitive URIs within the application.

Long-Term Security Practices

Regularly update and patch all software components to address known vulnerabilities.
Conduct security audits and penetration testing to identify and mitigate potential risks.

Patching and Updates

Stay informed about security advisories from PHPCMS and apply patches as soon as they are released.