CVE-2019-8140 : What You Need to Know
Learn about CVE-2019-8140 affecting Magento 2 versions 2.2 and 2.3, allowing admin users to convert JPEG files to PHP files. Find mitigation steps and patching recommendations.
Magento 2 versions 2.2 prior to 2.2.10 and 2.3 prior to 2.3.3 or 2.3.2-p1 are vulnerable to an unrestricted file upload issue that allows authenticated admin users to manipulate the Synchronization feature in the Media File Storage, converting uploaded JPEG files into PHP files.
Understanding CVE-2019-8140
This CVE identifies a critical security vulnerability in Magento 2 versions that could be exploited by admin users with authentication.
What is CVE-2019-8140?
An unrestricted file upload vulnerability in Magento 2.2 before 2.2.10 and Magento 2.3 before 2.3.3 or 2.3.2-p1 allows admin users to misuse the Synchronization feature in the Media File Storage, enabling the conversion of JPEG files to PHP files.
The Impact of CVE-2019-8140
The vulnerability poses a severe risk as it can be leveraged by malicious actors to upload and execute arbitrary PHP code on the server, potentially leading to unauthorized access and data breaches.
Technical Details of CVE-2019-8140
Magento 2 versions 2.2 and 2.3 are affected by this vulnerability.
Vulnerability Description
The flaw enables admin users to exploit the Synchronization feature in the Media File Storage, converting uploaded JPEG files into PHP files.
Affected Systems and Versions
- Product: Magento 2
- Vendor: Adobe Systems Incorporated
- Versions Affected:
- Magento 2.2 prior to 2.2.10
- Magento 2.3 prior to 2.3.3 or 2.3.2-p1
Exploitation Mechanism
Admin users with authentication can abuse the Synchronization feature to convert JPEG files into PHP files, potentially leading to remote code execution.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply the security patches provided by Magento for versions 2.2.10 and 2.3.3.
- Restrict admin access and permissions to minimize the risk of unauthorized file uploads.
Long-Term Security Practices
- Regularly monitor and audit file uploads and changes within the system.
- Educate admin users on secure file handling practices to prevent similar incidents.
Patching and Updates
- Ensure timely installation of security updates and patches released by Magento to address this vulnerability.