CVE-2017-16327 : Vulnerability Insights and Analysis

CVE-2017-16327 is a vulnerability found in the Insteon Hub firmware version 1012, leading to buffer overflow issues in the PubNub message handler. Attackers can exploit this vulnerability to overwrite data by sending specially crafted commands through the PubNub service.

Understanding CVE-2017-16327

This CVE identifies a stack-based buffer overflow vulnerability in the Insteon Hub firmware version 1012.

What is CVE-2017-16327?

The vulnerability allows attackers to overwrite data by sending crafted commands through the PubNub service.

The Impact of CVE-2017-16327

Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
CVSS Base Score: 8.5 (High)

Technical Details of CVE-2017-16327

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The buffer overflow occurs in the PubNub message handler for the "cc" channel.
Exploitation requires an authenticated HTTP request.
The overflow happens in the cmd s_init_event function at address 0x9d01ea88.

Affected Systems and Versions

Vendor: Insteon
Product: Hub
Affected Version: Not specified

Exploitation Mechanism

Attackers exploit the vulnerability by sending specially crafted commands through the PubNub service.
The buffer overflow occurs in the cmd s_init_event function at address 0x9d01ea88.
The buffer size is only 32 bytes, leading to overflow if longer data is sent.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2017-16327:

Immediate Steps to Take

Update the Insteon Hub firmware to a patched version.
Restrict network access to the PubNub service.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Apply patches provided by Insteon for the Hub firmware.