CVE-2017-2892 : Vulnerability Insights and Analysis

Cesanta Mongoose 6.8 contains a critical vulnerability in its MQTT packet parsing feature that allows for arbitrary memory reading, potentially leading to information leakage, denial of service, and remote code execution.

Understanding CVE-2017-2892

What is CVE-2017-2892?

An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. By sending a carefully crafted MQTT packet, an attacker can trigger this vulnerability through network channels.

The Impact of CVE-2017-2892

This vulnerability has a CVSS base score of 9.8 (Critical) and can result in high impacts on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2017-2892

Vulnerability Description

A specially crafted MQTT packet can cause an arbitrary out-of-bounds memory read and write, potentially leading to information disclosure, denial of service, and remote code execution.

Affected Systems and Versions

Product: Mongoose
Vendor: Cesanta
Version: 6.8

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged

Mitigation and Prevention

Immediate Steps to Take

Apply vendor patches or updates promptly.
Monitor network traffic for any suspicious MQTT packets.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security assessments and penetration testing to identify vulnerabilities.
Educate users and administrators about safe network practices.

Patching and Updates

Ensure that all systems running Cesanta Mongoose 6.8 are updated with the latest patches provided by the vendor.