CVE-2019-5009 : Exploit Details and Defense Strategies
Learn about CVE-2019-5009, a vulnerability in Vtiger CRM 7.1.0 allowing PHP file uploads disguised as PNG images, potentially leading to remote code execution. Find mitigation steps and preventive measures here.
Vtiger CRM 7.1.0 before Hotfix2 allows the uploading of PHP files disguised as PNG images, leading to remote code execution.
Understanding CVE-2019-5009
This CVE involves a vulnerability in Vtiger CRM 7.1.0 that enables the insertion and execution of PHP code through image uploads.
What is CVE-2019-5009?
The logo upload field in Vtiger CRM 7.1.0 before Hotfix2 permits the uploading of files with the extension "php3" as long as the file is in PNG format and has dimensions of 150x40. This allows for the insertion of PHP code into the image, which can be executed using the "<? ?>" tags.
The Impact of CVE-2019-5009
This vulnerability allows malicious actors to upload PHP files disguised as PNG images, potentially leading to remote code execution within the CRM system.
Technical Details of CVE-2019-5009
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The flaw in Vtiger CRM 7.1.0 before Hotfix2 enables the uploading of PHP files under the guise of PNG images, facilitating the execution of malicious PHP code.
Affected Systems and Versions
- Affected Version: Vtiger CRM 7.1.0 before Hotfix2
Exploitation Mechanism
- Attackers can upload PHP files with a "php3" extension disguised as PNG images to execute PHP code within the CRM system.
Mitigation and Prevention
Protect your systems from CVE-2019-5009 with these mitigation strategies.
Immediate Steps to Take
- Apply the necessary patches and updates provided by Vtiger CRM to address this vulnerability.
- Restrict file upload permissions to prevent the uploading of potentially malicious files.
Long-Term Security Practices
- Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.
- Educate users on safe file handling practices to prevent the inadvertent execution of malicious code.
Patching and Updates
- Stay informed about security updates and patches released by Vtiger CRM to mitigate the risks associated with CVE-2019-5009.