CVE-2017-6100 : What You Need to Know
Learn about CVE-2017-6100 affecting TCPDF versions before 6.2.0. Understand the impact, exploitation mechanism, and mitigation steps to secure your systems.
TCPDF before version 6.2.0 allows files from the server to be uploaded to an external FTP, creating PDF files.
Understanding CVE-2017-6100
Files originating from the server are uploaded to an external FTP by tcpdf earlier than version 6.2.0, resulting in the creation of PDF files.
What is CVE-2017-6100?
This CVE describes a vulnerability in TCPDF versions prior to 6.2.0 that allows files from the server to be uploaded to an external FTP, leading to the generation of PDF files.
The Impact of CVE-2017-6100
The vulnerability enables an attacker to upload server files to an external FTP server, potentially exposing sensitive information and compromising data integrity.
Technical Details of CVE-2017-6100
TCPDF before version 6.2.0 uploads files from the server generating PDF-files to an external FTP.
Vulnerability Description
The issue allows unauthorized uploading of server files to an external FTP server, leading to PDF file creation.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: All versions prior to 6.2.0
Exploitation Mechanism
The vulnerability is exploited by abusing default parameters to upload server files to an external FTP server.
Mitigation and Prevention
Immediate action and long-term security practices are crucial to mitigate the risks associated with CVE-2017-6100.
Immediate Steps to Take
- Upgrade TCPDF to version 6.2.0 or newer to prevent the vulnerability.
- Monitor FTP activities for any suspicious uploads.
Long-Term Security Practices
- Implement access controls to restrict file upload capabilities.
- Regularly update and patch software to address security vulnerabilities.
Patching and Updates
Ensure timely installation of security patches and updates to mitigate the risk of unauthorized file uploads.