CVE-2017-11466 Explained : Impact and Mitigation
Learn about CVE-2017-11466, a vulnerability in dotCMS 4.1.1 allowing remote authenticated administrators to upload .jsp files, potentially leading to arbitrary code execution. Find mitigation steps here.
CVE-2017-11466 pertains to a vulnerability found in dotCMS version 4.1.1 that allows remote authenticated administrators to upload .jsp files to arbitrary locations, potentially leading to arbitrary code execution.
Understanding CVE-2017-11466
What is CVE-2017-11466?
The vulnerability in dotCMS version 4.1.1 enables remote authenticated administrators to upload .jsp files to any location by exploiting directory traversal sequences in the fieldName parameter of the servlets/ajax_file_upload.
The Impact of CVE-2017-11466
This vulnerability allows for the execution of arbitrary code by accessing the uploaded .jsp file through a /assets URI.
Technical Details of CVE-2017-11466
Vulnerability Description
The flaw exists in the com/dotmarketing/servlets/AjaxFileUploadServlet.class file in dotCMS 4.1.1, facilitating the unauthorized upload of .jsp files by authenticated administrators.
Affected Systems and Versions
- Product: dotCMS
- Version: 4.1.1
Exploitation Mechanism
The vulnerability is exploited by manipulating the fieldName parameter in the servlets/ajax_file_upload, allowing the upload of malicious .jsp files.
Mitigation and Prevention
Immediate Steps to Take
- Update dotCMS to a patched version that addresses the vulnerability.
- Restrict access to the servlets/ajax_file_upload functionality.
Long-Term Security Practices
- Regularly monitor and audit file uploads and permissions within the application.
- Implement strict input validation to prevent directory traversal attacks.
Patching and Updates
Ensure timely application of security patches and updates to mitigate the risk of exploitation.