CVE-2020-10564 : Exploit Details and Defense Strategies

An issue was discovered in the File Upload plugin before 4.13.0 for WordPress. A directory traversal can lead to remote code execution by uploading a crafted txt file into the lib directory, because of a wfu_include_lib call.

Understanding CVE-2020-10564

This CVE identifies a vulnerability in the File Upload plugin for WordPress that could allow remote code execution.

What is CVE-2020-10564?

CVE-2020-10564 is a security vulnerability found in the File Upload plugin before version 4.13.0 for WordPress. It enables remote attackers to execute arbitrary code by exploiting a directory traversal issue.

The Impact of CVE-2020-10564

The vulnerability can result in remote code execution, potentially leading to unauthorized access, data theft, and system compromise.

Technical Details of CVE-2020-10564

The technical aspects of the CVE provide insight into the vulnerability's nature and its implications.

Vulnerability Description

The issue arises from a directory traversal flaw that allows attackers to upload a malicious txt file into the lib directory, exploiting the wfu_include_lib call for remote code execution.

Affected Systems and Versions

Plugin: File Upload
Versions affected: Before 4.13.0

Exploitation Mechanism

Attackers can exploit the vulnerability by uploading a specially crafted txt file into the lib directory, triggering the wfu_include_lib call and executing malicious code.

Mitigation and Prevention

Protecting systems from CVE-2020-10564 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update the File Upload plugin to version 4.13.0 or newer to mitigate the vulnerability.
Monitor for any unauthorized file uploads or suspicious activities.

Long-Term Security Practices

Regularly audit and review plugins for security vulnerabilities.
Implement file upload restrictions and validation checks to prevent malicious uploads.

Patching and Updates

Stay informed about security updates for WordPress plugins and apply patches promptly to address known vulnerabilities.