CVE-2019-6113 : Security Advisory and Response

A security flaw in ONKYO TX-NR686 1030-5000-1040-0010 A/V Receiver devices allows remote attackers to gain unauthorized access to read any files by exploiting a directory traversal vulnerability.

Understanding CVE-2019-6113

What is CVE-2019-6113?

This CVE identifies a directory traversal vulnerability in ONKYO TX-NR686 1030-5000-1040-0010 A/V Receiver devices that permits remote attackers to read arbitrary files through specific sequences in the default URI.

The Impact of CVE-2019-6113

The vulnerability enables unauthorized access to sensitive files on affected devices, potentially leading to data breaches and privacy violations.

Technical Details of CVE-2019-6113

Vulnerability Description

The flaw in ONKYO TX-NR686 A/V Receiver devices allows attackers to read any files by utilizing the ".." and "%2f" sequences in the default URI.

Affected Systems and Versions

Product: ONKYO TX-NR686 1030-5000-1040-0010 A/V Receiver
Vendor: ONKYO
Versions: All versions are affected

Exploitation Mechanism

Attackers can exploit the vulnerability by inserting specific sequences in the default URI to traverse directories and access unauthorized files.

Mitigation and Prevention

Immediate Steps to Take

Disable remote access if not required
Implement network segmentation to restrict access
Regularly monitor and analyze network traffic for suspicious activities

Long-Term Security Practices

Keep devices up to date with the latest firmware and security patches
Conduct regular security audits and penetration testing

Patching and Updates

Check for firmware updates from ONKYO and apply patches promptly to mitigate the vulnerability