CVE-2018-6210 : What You Need to Know

Devices manufactured by D-Link with firmware version 1.0.37 and a specific variant designed for Rostelekom have a predefined account called "rostel." This presents a security vulnerability as it allows remote attackers to gain unauthorized access through a TELNET session.

Understanding CVE-2018-6210

D-Link DIR-620 devices with a certain Rostelekom variant of firmware 1.0.37 have a hardcoded rostel account, facilitating unauthorized access for remote attackers via a TELNET session.

What is CVE-2018-6210?

CVE-2018-6210 is a vulnerability found in D-Link devices with specific firmware versions, allowing unauthorized access through a predefined account.

The Impact of CVE-2018-6210

The presence of a hardcoded account in D-Link devices poses a significant security risk, enabling remote attackers to exploit the vulnerability and gain unauthorized access.

Technical Details of CVE-2018-6210

Vulnerability Description

Devices with firmware version 1.0.37 and a Rostelekom variant have a predefined account 'rostel,' leading to unauthorized access via TELNET.

Affected Systems and Versions

Product: D-Link DIR-620
Firmware Version: 1.0.37

Exploitation Mechanism

The vulnerability allows remote attackers to exploit the hardcoded account 'rostel' to gain unauthorized access through a TELNET session.

Mitigation and Prevention

Immediate Steps to Take

Disable TELNET services on affected devices.
Change default passwords and implement strong, unique credentials.

Long-Term Security Practices

Regularly update firmware to patch known vulnerabilities.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Apply firmware updates provided by D-Link to address the hardcoded account vulnerability.