ColdFusion directory traversal
Description
Adobe ColdFusion 9.0.1 and earlier versions contain a directory traversal vulnerability (CVE-2010-2861) that allows remote attackers to read arbitrary files from the server. Attackers exploit this flaw by using path traversal sequences (such as '../') in HTTP requests to navigate outside the web application's root directory and access sensitive files, including configuration files, source code, and potentially credentials. This vulnerability requires no authentication and can be exploited remotely over the network.
Remediation
Apply Adobe Security Bulletin APSB10-18 hotfix immediately to all affected ColdFusion installations (versions 9.0.1 and earlier). Follow these steps:
1. Download the appropriate security hotfix from Adobe's official security bulletin (APSB10-18)
2. Back up your ColdFusion installation and configuration files before applying the patch
3. Stop the ColdFusion service
4. Apply the hotfix according to Adobe's installation instructions (KB article cpsid_85766)
5. Restart the ColdFusion service and verify proper operation
6. Test the fix by attempting directory traversal attacks against your own system
7. Review web server and application logs for any signs of previous exploitation
As an additional security measure, implement input validation to reject requests containing path traversal sequences ('../', '..\', URL-encoded variants) and restrict file access to only necessary directories using proper access controls.