CVE-2017-14424 : Exploit Details and Defense Strategies

D-Link DIR-850L devices with specific firmware versions are vulnerable due to incorrect permissions set for the /var/passwd file.

Understanding CVE-2017-14424

This CVE identifies a security vulnerability in D-Link DIR-850L routers that can lead to unauthorized access.

What is CVE-2017-14424?

The issue arises from the incorrect permission settings (0666) on the /var/passwd file in D-Link DIR-850L REV. A and REV. B devices.

The Impact of CVE-2017-14424

The vulnerability allows attackers to potentially gain unauthorized access to sensitive information on the affected devices.

Technical Details of CVE-2017-14424

Dive deeper into the technical aspects of this vulnerability.

Vulnerability Description

The vulnerability stems from the misconfiguration of permissions on the /var/passwd file, making it accessible to unauthorized users.

Affected Systems and Versions

D-Link DIR-850L REV. A with firmware version FW114WWb07_h2ab_beta1
D-Link DIR-850L REV. B with firmware version FW208WWb02

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the incorrect permissions on the /var/passwd file to gain unauthorized access to the device.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2017-14424.

Immediate Steps to Take

Update the firmware of the D-Link DIR-850L router to the latest version that addresses this vulnerability.
Restrict network access to the router to trusted devices only.

Long-Term Security Practices

Regularly monitor for firmware updates and security advisories from D-Link.
Implement strong password policies and enable additional security features on the router.

Patching and Updates

Ensure timely installation of firmware updates provided by D-Link to patch the vulnerability.