CVE-2017-15359 : Exploit Details and Defense Strategies

CVE-2017-15359, published on October 18, 2017, addresses a vulnerability in the 3CX Phone System version 15.5.3554.1 that can be exploited through an authenticated directory traversal attack.

Understanding CVE-2017-15359

This CVE entry highlights a security issue in the 3CX Phone System that could lead to unauthorized access to sensitive information.

What is CVE-2017-15359?

Within the 3CX Phone System version 15.5.3554.1, a specific configuration on port 5001 makes it vulnerable to a directory traversal attack. Attackers can exploit this by manipulating certain parameters to access restricted data.

The Impact of CVE-2017-15359

The vulnerability allows authenticated attackers to retrieve confidential information, potentially leading to further security breaches and unauthorized activities.

Technical Details of CVE-2017-15359

This section delves into the specifics of the vulnerability and its implications.

Vulnerability Description

The vulnerable parameters for exploitation are "/api/RecordingList/DownloadRecord?file=" and "/api/SupportInfo?file=" within the Management Console of the 3CX Phone System version 15.5.3554.1.

Affected Systems and Versions

Product: 3CX Phone System
Version: 15.5.3554.1

Exploitation Mechanism

To exploit this vulnerability, attackers must first authenticate themselves before manipulating the vulnerable parameters to gain access to sensitive data.

Mitigation and Prevention

Protecting systems from CVE-2017-15359 involves immediate actions and long-term security measures.

Immediate Steps to Take

Update the 3CX Phone System to a patched version that addresses the vulnerability.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access.
Regularly audit and review system configurations to identify and mitigate potential security risks.

Patching and Updates

Ensure timely installation of security patches and updates provided by the vendor to safeguard against known vulnerabilities.