CVE-2019-9581 Explained : Impact and Mitigation

phpScheduleIt Booked Scheduler 2.7.5 allows arbitrary file upload via the Favicon field, leading to the execution of arbitrary PHP code. This vulnerability arises due to the lack of validation for image file extensions.

Understanding CVE-2019-9581

Arbitrary file upload vulnerability in phpScheduleIt Booked Scheduler 2.7.5.

What is CVE-2019-9581?

Arbitrary file upload can occur in phpScheduleIt Booked Scheduler 2.7.5 through the Favicon field, allowing the execution of arbitrary PHP code due to insufficient validation of image file extensions.

The Impact of CVE-2019-9581

Attackers can upload malicious files leading to the execution of arbitrary code on the server.
Exploitation can result in unauthorized access, data theft, or system compromise.

Technical Details of CVE-2019-9581

Vulnerability details and affected systems.

Vulnerability Description

Arbitrary file upload vulnerability in phpScheduleIt Booked Scheduler 2.7.5 allows attackers to upload files via the Favicon field.
Lack of validation for image file extensions in Presenters/Admin/ManageThemePresenter.php.

Affected Systems and Versions

Product: phpScheduleIt Booked Scheduler 2.7.5
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers exploit the Favicon field to upload malicious files.
Execution of arbitrary PHP code through the uploaded files.

Mitigation and Prevention

Protecting systems from CVE-2019-9581.

Immediate Steps to Take

Disable file uploads in the Favicon field.
Implement input validation for file uploads to restrict allowed file types.
Monitor and restrict access to sensitive system files.

Long-Term Security Practices

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

Patching and Updates

Apply patches provided by the software vendor to address the vulnerability.
Stay informed about security updates and best practices to enhance system security.