CVE-2017-8412 : Vulnerability Insights and Analysis

A vulnerability has been identified in D-Link DCS-1100 and DCS-1130 devices that could allow attackers to execute buffer overflow or command injection attacks.

Understanding CVE-2017-8412

What is CVE-2017-8412?

This CVE refers to a vulnerability found in D-Link DCS-1100 and DCS-1130 devices due to a stack overflow condition that can be exploited by attackers.

The Impact of CVE-2017-8412

The vulnerability allows attackers to overwrite the PC register, potentially leading to buffer overflow or command injection attacks.

Technical Details of CVE-2017-8412

Vulnerability Description

The devices contain a custom binary file called mp4ts in the /var/www/video directory
The binary logs the HTTP VERB found in the system logs
Exploits a vulnerable sprintf function at address 0x0000C3D4 within the sub_C210 function
Lack of bounds check on the environment variable at address 0x0000C360 leads to a stack overflow condition

Affected Systems and Versions

Product: D-Link DCS-1100 and DCS-1130
Version: Not applicable

Exploitation Mechanism

Attacker exploits the lack of bounds check on the environment variable at address 0x0000C360
This results in a stack overflow condition overwriting the PC register

Mitigation and Prevention

Immediate Steps to Take

Disable affected devices if possible
Implement network segmentation to isolate vulnerable devices
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software patches
Conduct security assessments and penetration testing

Patching and Updates

Check for firmware updates from D-Link
Apply patches provided by the vendor to address the vulnerability