CVE-2018-14942 : Vulnerability Insights and Analysis

Harmonic NSG 9000 devices allow remote authenticated users to conduct directory traversal attacks by exploiting specific POST requests.

Understanding CVE-2018-14942

What is CVE-2018-14942?

The vulnerability in Harmonic NSG 9000 devices permits remote authenticated users to execute directory traversal attacks through crafted POST requests.

The Impact of CVE-2018-14942

This vulnerability enables attackers to access sensitive system files by manipulating specific POST requests, potentially leading to unauthorized disclosure of information.

Technical Details of CVE-2018-14942

Vulnerability Description

The flaw in Harmonic NSG 9000 devices allows remote authenticated users to perform directory traversal attacks by sending malicious POST requests with specific parameters.

Affected Systems and Versions

Product: Harmonic NSG 9000
Vendor: Harmonic
Versions: All versions are affected

Exploitation Mechanism

Attackers exploit the vulnerability by sending crafted POST requests, such as "POST /PY/EMULATION_GET_FILE" or "POST /PY/EMULATION_EXPORT" with a manipulated FileName parameter in the POST data.

Mitigation and Prevention

Immediate Steps to Take

Implement access controls to restrict unauthorized access to sensitive directories.
Regularly monitor and analyze POST requests for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Keep systems up to date with the latest security patches and updates.

Patching and Updates

Apply patches and updates provided by Harmonic to address the vulnerability and enhance system security.