CVE-2017-16188 : Security Advisory and Response

A directory traversal vulnerability in the reecerver node module by HackerOne allows unauthorized access to the file system.

Understanding CVE-2017-16188

The vulnerability was made public on April 26, 2018, and is categorized under Path Traversal (CWE-22).

What is CVE-2017-16188?

The web server reecerver is susceptible to a directory traversal flaw, enabling attackers to navigate the file system by inserting "../" into the URL.

The Impact of CVE-2017-16188

This vulnerability could lead to unauthorized access to sensitive files and data on the server, compromising the confidentiality and integrity of the system.

Technical Details of CVE-2017-16188

The following technical details outline the specifics of the CVE.

Vulnerability Description

The reecerver node module is vulnerable to a directory traversal issue, allowing attackers to gain unauthorized access to the file system.

Affected Systems and Versions

Product: reecerver node module
Vendor: HackerOne
Versions: All versions

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the URL and inserting directory traversal sequences to access files outside the intended directory structure.

Mitigation and Prevention

Protecting systems from CVE-2017-16188 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the reecerver node module to the latest patched version.
Implement input validation to sanitize user-controlled input and prevent directory traversal attacks.

Long-Term Security Practices

Regularly monitor and audit web server logs for unusual access patterns.
Conduct security assessments and penetration testing to identify and remediate vulnerabilities proactively.

Patching and Updates

Apply security patches and updates promptly to address known vulnerabilities and enhance system security.