CVE-2017-7852 : Vulnerability Insights and Analysis

D-Link DCS cameras contain a vulnerable CrossDomain.XML file that allows malicious Flash objects to access and modify camera settings through a CSRF attack.

Understanding CVE-2017-7852

What is CVE-2017-7852?

The vulnerability in D-Link DCS cameras arises from a weak CrossDomain.XML file that permits unauthorized access and modifications by malicious Flash objects.

The Impact of CVE-2017-7852

The vulnerability enables attackers to manipulate camera settings, retrieve live feeds, create new admin accounts, and perform unauthorized actions on affected devices.

Technical Details of CVE-2017-7852

Vulnerability Description

The 'allow-access-from domain' element set to * in the CrossDomain.XML file allows requests from any domain, facilitating unauthorized access to D-Link DCS cameras.

Affected Systems and Versions

DCS-933L (firmware version earlier than 1.13.05)
DCS-5030L, DCS-5020L, DCS-2530L, DCS-2630L, DCS-930L, DCS-932L, DCS-932LB1

Exploitation Mechanism

Malicious Flash objects hosted on websites can send unauthorized requests to the camera without requiring authentication credentials.

Mitigation and Prevention

Immediate Steps to Take

Update D-Link DCS camera firmware to version 1.13.05 or later.
Avoid visiting untrusted websites while logged into the camera's web console.

Long-Term Security Practices

Regularly monitor for firmware updates and apply them promptly.
Implement network segmentation to isolate IoT devices like cameras.

Patching and Updates

Regularly check for security advisories from D-Link and apply patches as soon as they are available.