CVE-2020-23828 : Security Advisory and Response

A File Upload vulnerability in SourceCodester Online Course Registration v1.0 allows remote attackers to achieve Remote Code Execution (RCE) on the hosting webserver by uploading a crafted PHP web-shell that bypasses the image upload filters.

Understanding CVE-2020-23828

This CVE describes a critical vulnerability in SourceCodester Online Course Registration v1.0 that enables attackers to execute arbitrary code remotely.

What is CVE-2020-23828?

The vulnerability allows attackers to upload a malicious PHP web-shell, circumventing image upload filters, and execute code on the webserver.

The Impact of CVE-2020-23828

The exploitation of this vulnerability can lead to Remote Code Execution (RCE) on the hosting webserver, potentially compromising the entire system.

Technical Details of CVE-2020-23828

SourceCodester Online Course Registration v1.0 is affected by this vulnerability.

Vulnerability Description

Type: File Upload Vulnerability
Attack Vector: Remote
Attack Complexity: Low
Privileges Required: None

Affected Systems and Versions

Product: SourceCodester Online Course Registration
Version: 1.0

Exploitation Mechanism

Attackers upload a crafted PHP web-shell via /Online%20Course%20Registration/my-profile.php with the POST parameter photo.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-23828.

Immediate Steps to Take

Disable file uploads until a patch is available.
Implement strict file upload validation to prevent malicious uploads.
Monitor webserver logs for any suspicious activity.

Long-Term Security Practices

Regularly update and patch the application to address security vulnerabilities.
Conduct security audits and penetration testing to identify and remediate weaknesses.

Patching and Updates

Apply patches provided by the vendor promptly to fix the vulnerability and enhance system security.