CVE-2018-12046 Explained : Impact and Mitigation

DedeCMS version up to 5.7SP2 has a vulnerability that allows arbitrary file writing in dede/file_manage_control.php.

Understanding CVE-2018-12046

This CVE involves a security flaw in DedeCMS that permits unauthorized file writing.

What is CVE-2018-12046?

The vulnerability in DedeCMS up to version 5.7SP2 allows attackers to write arbitrary files by exploiting specific parameters in the file management functionality.

The Impact of CVE-2018-12046

This vulnerability enables malicious actors to write new .php files, potentially leading to unauthorized code execution and further compromise of the system.

Technical Details of CVE-2018-12046

The technical aspects of the vulnerability in DedeCMS version up to 5.7SP2.

Vulnerability Description

The flaw allows arbitrary file writing in dede/file_manage_control.php through a specific request made in dede/file_manage_view.php with certain parameters.

Affected Systems and Versions

Product: DedeCMS
Vendor: N/A
Versions: Up to 5.7SP2

Exploitation Mechanism

The vulnerability is exploited by sending a request to dede/file_manage_view.php?fmdo=newfile with the parameters 'name' and 'str' to write to a new .php file.

Mitigation and Prevention

Steps to address and prevent the exploitation of CVE-2018-12046.

Immediate Steps to Take

Apply security patches or updates provided by DedeCMS promptly.
Implement strict input validation to prevent unauthorized file writing.

Long-Term Security Practices

Regularly monitor and audit file system changes and permissions.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from DedeCMS.
Keep the CMS and related components up to date to mitigate known vulnerabilities.