CVE-2017-6432 : Vulnerability Insights and Analysis

A vulnerability has been identified in the Dahua DHI-HCVR7216A-S3 devices that could allow attackers to perform a Man-in-the-Middle attack, leading to unauthorized access and data interception.

Understanding CVE-2017-6432

This CVE relates to a security flaw in the DVR Protocol used by Dahua DHI-HCVR7216A-S3 devices, potentially enabling attackers to create new users with full privileges and access sensitive information.

What is CVE-2017-6432?

The vulnerability in the Dahua DHI-HCVR7216A-S3 devices allows for interception and modification of packets due to the lack of encryption in the DVR Protocol, facilitating a Man-in-the-Middle attack.

The Impact of CVE-2017-6432

The vulnerability could result in unauthorized users gaining full privileges, creating new accounts, and extracting sensitive data from affected devices.

Technical Details of CVE-2017-6432

The technical aspects of this CVE include:

Vulnerability Description

The flaw exists in the unencrypted and binary Dahua DVR Protocol operating on TCP Port 37777.
Attackers can conduct Man-in-the-Middle attacks to intercept and modify packets.

Affected Systems and Versions

Model: Dahua DHI-HCVR7216A-S3
Build: 3.210.0001.10 (2016-06-06)

Exploitation Mechanism

Attackers exploit the lack of encryption in the DVR Protocol to perform unauthorized actions, such as creating new users and accessing sensitive data.

Mitigation and Prevention

To address CVE-2017-6432, consider the following steps:

Immediate Steps to Take

Disable remote access if not required.
Implement strong network segmentation.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and security patches.
Use strong, unique passwords for all devices.
Conduct security audits and penetration testing periodically.

Patching and Updates

Check for firmware updates from Dahua to address the vulnerability.
Apply patches promptly to secure the devices against potential attacks.