CVE-2021-41504 : Exploit Details and Defense Strategies

An Elevated Privileges issue exists in D-Link DCS-5000L v1.05 and DCS-932L v2.17 and older, allowing potential unauthorized access and compromise of camera configurations.

Understanding CVE-2021-41504

This CVE describes a security vulnerability in D-Link camera models that can lead to serious security breaches.

What is CVE-2021-41504?

The vulnerability lies in the use of digest-authentication for the devices' command interface, leading to exploitable attack vectors that can compromise camera configurations and grant unauthorized LAN access.

The Impact of CVE-2021-41504

The vulnerability could be exploited by malicious actors to infiltrate the camera system, compromising the security and enabling local network access without authorization.

Technical Details of CVE-2021-41504

This section outlines the specific technical details related to the CVE.

Vulnerability Description

The issue allows unauthorized users on the LAN to potentially access the camera system, exploiting digest-authentication in D-Link DCS-5000L and DCS-932L models that are outdated and no longer supported.

Affected Systems and Versions

Affected Systems: D-Link DCS-5000L v1.05 and DCS-932L v2.17 and older
Products: No longer supported by the maintainer

Exploitation Mechanism

The use of digest-authentication exposes the command interface to attack vectors, allowing unauthorized users to gain access to the camera devices.

Mitigation and Prevention

To address CVE-2021-41504, consider the following steps:

Immediate Steps to Take

Disable digest-authentication unless necessary
Update to secure and supported camera versions

Long-Term Security Practices

Regularly update firmware and software of devices
Implement strong password policies and access controls

Patching and Updates

Stay informed about security advisories from D-Link
Apply patches and updates promptly to mitigate vulnerabilities