ColdFusion Arbitrary File Upload
Description
Adobe ColdFusion versions prior to the security updates released in APSB18-33 contain an arbitrary file upload vulnerability that does not require authentication. This flaw allows remote attackers to upload files of any type to the server without proper validation or access controls, creating a direct pathway to remote code execution.
Remediation
Immediately upgrade to the latest patched version of Adobe ColdFusion as specified in security bulletin APSB18-33. For ColdFusion 2018, update to Update 1 or later. For ColdFusion 2016, update to Update 7 or later. For ColdFusion 11, update to Update 15 or later.
If immediate patching is not possible, implement the following temporary mitigations:
1. Restrict network access to ColdFusion administrative interfaces using firewall rules or web server configurations
2. Implement file upload validation that checks both file extensions and content types
3. Monitor for suspicious file uploads, particularly JSP files in web-accessible directories
4. Review server logs for indicators of compromise and unauthorized file creation
After patching, conduct a thorough security audit to ensure no malicious files were uploaded prior to remediation.