CVE-2019-14521 Explained : Impact and Mitigation

EMCA Energy Logserver 6.1.2 is vulnerable to a path traversal exploit in the Logo File upload feature, specifically in the api/admin/logoupload endpoint. Attackers can abuse this vulnerability to upload arbitrary files to any location on the server.

Understanding CVE-2019-14521

This CVE identifies a security flaw in EMCA Energy Logserver 6.1.2 that allows attackers to manipulate the filename parameter to perform a path traversal attack.

What is CVE-2019-14521?

The vulnerability in the Logo File upload feature of EMCA Energy Logserver 6.1.2 enables attackers to upload unauthorized files to any desired location on the server by exploiting a path traversal issue in the filename parameter.

The Impact of CVE-2019-14521

The exploitation of this vulnerability can lead to severe consequences, including unauthorized access to sensitive data, execution of malicious code, and potential compromise of the entire server.

Technical Details of CVE-2019-14521

EMCA Energy Logserver 6.1.2's vulnerability to path traversal attacks in the Logo File upload feature exposes the following technical aspects:

Vulnerability Description

Attackers can abuse the path traversal vulnerability in the filename parameter to upload arbitrary files to any location on the server, compromising its integrity and security.

Affected Systems and Versions

Product: EMCA Energy Logserver 6.1.2
Vendor: EMCA
Version: All versions are affected

Exploitation Mechanism

The exploit involves manipulating the filename parameter in the api/admin/logoupload endpoint to bypass file upload restrictions and place malicious files in unauthorized locations on the server.

Mitigation and Prevention

To address CVE-2019-14521 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Disable or restrict access to the api/admin/logoupload endpoint
Implement input validation to sanitize user-supplied filenames
Regularly monitor file uploads for suspicious activity

Long-Term Security Practices

Conduct regular security assessments and penetration testing
Stay informed about security updates and patches for EMCA Energy Logserver
Educate users and administrators about secure file upload practices

Patching and Updates

Apply patches and updates provided by EMCA promptly to address the vulnerability and enhance system security