CVE-2017-11436 Explained : Impact and Mitigation

D-Link DIR-615 before v20.12PTb04 has a vulnerability that could allow unauthorized access to the device through a TELNET connection.

Understanding CVE-2017-11436

This CVE identifies a security issue in D-Link DIR-615 routers that could be exploited by attackers.

What is CVE-2017-11436?

In previous versions of D-Link DIR-615, specifically before v20.12PTb04, there exists a secondary administrator account with a value of 0x1 BACKDOOR. This could potentially enable unauthorized individuals to gain access to the device through a TELNET connection.

The Impact of CVE-2017-11436

The vulnerability could allow remote attackers to obtain access to the affected D-Link DIR-615 routers, compromising the security and privacy of the network.

Technical Details of CVE-2017-11436

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

D-Link DIR-615 routers before v20.12PTb04 have a second admin account with a 0x1 BACKDOOR value, which might allow remote attackers to obtain access via a TELNET connection.

Affected Systems and Versions

Product: D-Link DIR-615
Versions affected: Before v20.12PTb04

Exploitation Mechanism

The vulnerability could be exploited by unauthorized individuals to gain access to the device through a TELNET connection.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial to maintaining security.

Immediate Steps to Take

Update the D-Link DIR-615 router to version v20.12PTb04 or newer to mitigate the vulnerability.
Disable TELNET access if not required to reduce the attack surface.

Long-Term Security Practices

Regularly monitor for security updates and apply patches promptly.
Implement strong password policies and consider using additional security measures like firewall rules.

Patching and Updates

Ensure that the router firmware is regularly updated to the latest version to address known vulnerabilities.