CVE-2017-2895 : What You Need to Know

Cesanta Mongoose 6.8 contains a vulnerability in its MQTT packet parsing feature that allows for arbitrary memory read, potentially leading to information exposure and denial of service.

Understanding CVE-2017-2895

Cesanta Mongoose 6.8 MQTT Packet Parsing Vulnerability

What is CVE-2017-2895?

An arbitrary memory read vulnerability in Cesanta Mongoose 6.8's MQTT packet parsing feature can be exploited by an attacker to read memory outside intended boundaries, causing information exposure and denial of service.

The Impact of CVE-2017-2895

CVSS Base Score: 8.2 (High)
Attack Vector: Network
Attack Complexity: Low
Availability Impact: High
Confidentiality Impact: Low
Integrity Impact: None
Privileges Required: None
Scope: Unchanged
User Interaction: None

Technical Details of CVE-2017-2895

Details of the vulnerability

Vulnerability Description

Exploitable arbitrary memory read vulnerability in MQTT packet parsing of Cesanta Mongoose 6.8
Triggered by a specially crafted MQTT SUBSCRIBE packet

Affected Systems and Versions

Product: Mongoose
Vendor: Cesanta
Version: 6.8

Exploitation Mechanism

Attacker sends a customized MQTT packet through the network to trigger the vulnerability

Mitigation and Prevention

Protecting against CVE-2017-2895

Immediate Steps to Take

Apply vendor-supplied patches or updates
Implement network-level controls to filter out malicious MQTT packets

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities
Conduct security assessments and penetration testing to identify and mitigate potential risks

Patching and Updates

Stay informed about security advisories and updates from Cesanta
Apply patches promptly to secure systems against known vulnerabilities