CVE-2019-8312 : Vulnerability Insights and Analysis

A vulnerability was found in D-Link DIR-878 devices running firmware version 1.12A1, allowing remote attackers to execute unauthorized code and gain root access through Command Injection.

Understanding CVE-2019-8312

This CVE identifies a Command Injection vulnerability in D-Link DIR-878 devices.

What is CVE-2019-8312?

The vulnerability enables remote attackers to execute unauthorized code and gain root access by sending a crafted /HNAP1 POST request.

The Impact of CVE-2019-8312

Attackers can execute arbitrary operating system commands remotely.
Unauthorized access to the device can lead to data theft or further network compromise.

Technical Details of CVE-2019-8312

This section provides technical details of the vulnerability.

Vulnerability Description

The vulnerability allows attackers to execute arbitrary OS commands by manipulating the SetSysLogSettings API function.

Affected Systems and Versions

Affected Device: D-Link DIR-878
Firmware Version: 1.12A1

Exploitation Mechanism

Attackers exploit the vulnerability by sending a malicious /HNAP1 POST request.
The vulnerability arises when untrusted input from the request body is used in the SetSysLogSettings API function.
Presence of shell metacharacters in the IPAddress field triggers the vulnerability.

Mitigation and Prevention

Protect your system from CVE-2019-8312 with the following steps:

Immediate Steps to Take

Update the firmware of D-Link DIR-878 devices to the latest version.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly monitor and audit network traffic for any suspicious activities.
Educate users on safe browsing habits and the importance of cybersecurity.

Patching and Updates

Stay informed about security updates and patches released by D-Link.
Apply patches promptly to mitigate the risk of exploitation.