CVE-2018-20794 : Exploit Details and Defense Strategies

Tecrail Responsive FileManager version 9.13.4 is vulnerable to remote attackers being able to write to arbitrary image files through path traversal in the save_img action of ajax_calls.php.

Understanding CVE-2018-20794

This CVE entry describes a security vulnerability in Tecrail Responsive FileManager version 9.13.4 that allows attackers to manipulate image files remotely.

What is CVE-2018-20794?

This CVE refers to the ability of remote attackers to write to arbitrary image files (jpg/jpeg/png) by exploiting a path traversal vulnerability in the save_img action of ajax_calls.php in Tecrail Responsive FileManager version 9.13.4.

The Impact of CVE-2018-20794

The vulnerability can lead to unauthorized modification of image files, potentially compromising the integrity and confidentiality of the affected system.

Technical Details of CVE-2018-20794

Tecrail Responsive FileManager version 9.13.4 is susceptible to exploitation due to the following technical details:

Vulnerability Description

Remote attackers can write to arbitrary image files through path traversal in the save_img action of ajax_calls.php.

Affected Systems and Versions

Product: Tecrail Responsive FileManager
Version: 9.13.4

Exploitation Mechanism

Attackers exploit the path parameter in the save_img action of ajax_calls.php to perform path traversal and manipulate image files.

Mitigation and Prevention

To address CVE-2018-20794, consider the following mitigation strategies:

Immediate Steps to Take

Disable or restrict access to the vulnerable save_img action.
Implement input validation to prevent path traversal attacks.

Long-Term Security Practices

Regularly update and patch Tecrail Responsive FileManager to the latest secure version.
Conduct security assessments and penetration testing to identify and remediate vulnerabilities.

Patching and Updates

Apply security patches provided by Tecrail for Responsive FileManager to fix the vulnerability.