CVE-2018-5700 : What You Need to Know
Learn about CVE-2018-5700, a critical vulnerability in Winmail Server up to version 6.2 that allows authenticated users to execute remote code through a directory traversal flaw.
Winmail Server up to version 6.2 allows authenticated users to execute remote code through a directory traversal vulnerability in the netdisk.php copy_folder_file call.
Understanding CVE-2018-5700
This CVE involves a critical vulnerability in Winmail Server that enables remote code execution by exploiting a specific directory traversal issue.
What is CVE-2018-5700?
Authenticated users can leverage directory traversal in the netdisk.php copy_folder_file call to move a .php file from the FTP folder to a web folder, allowing them to execute remote code.
The Impact of CVE-2018-5700
This vulnerability poses a severe risk as it enables attackers to execute arbitrary code on the affected system, potentially leading to unauthorized access and data compromise.
Technical Details of CVE-2018-5700
Winmail Server up to version 6.2 is susceptible to this vulnerability, allowing for remote code execution.
Vulnerability Description
The flaw lies in the netdisk.php copy_folder_file call in inc/class.ftpfolder.php, enabling authenticated users to transfer a .php file from the FTP folder to a web folder.
Affected Systems and Versions
- Product: Winmail Server
- Versions affected: Up to 6.2
Exploitation Mechanism
Attackers with authenticated access can exploit the directory traversal vulnerability to move malicious .php files, leading to remote code execution.
Mitigation and Prevention
To address CVE-2018-5700, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
- Update Winmail Server to the latest version that includes a patch for this vulnerability.
- Monitor system logs for any suspicious activities indicating exploitation attempts.
Long-Term Security Practices
- Implement strict access controls and user permissions to limit the impact of potential breaches.
- Regularly audit and review code for vulnerabilities, especially related to file handling and directory traversal.
Patching and Updates
- Apply security patches promptly to ensure that known vulnerabilities are mitigated effectively.